Abstract: A radio transmission station gives beamforming weights to electrical signals to control directions of radio-wave beams emitted from transmitting antennas. The radio transmission station generates a beam-discovery signal (BDS) that enables a radio reception station, after the radio reception station receives the beams, to identify the directions of the beams, and emits the BDS beams in multiple directions. The radio transmission station determines, based on at least one of the surroundings of the radio transmission station and a situation of the radio reception station, an arrangement pattern of multiple resource points to which the BDS is mapped. Based on information that is reported from the radio reception station and indicates a suitable direction among the directions of the beams, the radio transmission station determines a suitable beamforming weight that is to be given to a data signal addressed to the radio reception station.

Abstract: A method for transmitting data includes grouping resource elements (REs) of orthogonal frequency division multiplexed (OFDM) symbols of a physical resource block (PRB) into at least one paired RE and at least one orphan RE, transmitting the at least one paired RE in accordance with space frequency block coding (SFBC), and transmitting the at least one orphan RE in accordance with a precoder.

Abstract: Embodiments of the present invention provide a method for controlling power of a carrier signal, user equipment, and a base station. The method includes: receiving, by user equipment, power control parameters, sent by at least one base station, of at least two carrier signals, where the at least two carrier signals are signals sent on at least two aggregation carriers; determining, by the user equipment according to the power control parameters, channel gain reference quantities corresponding to the at least two carrier signals, where the channel gain reference quantities are used to represent a magnitude of a channel gain; and controlling, by the user equipment, power of the at least two carrier signals according to the channel gain reference quantities. According to the technical solutions of the present invention, a power resource of user equipment can be effectively utilized, and network performance can be improved.

Abstract: This disclosure relates generally to radio frequency (RF) front-end circuitry for different types of carrier aggregation, along with methods of operating the same. In one embodiment, the RF front-end circuitry includes a first diplexer, a second diplexer, first antenna selection circuitry, and second antenna selection circuitry. In order to maintain adequate isolation between high bands and low bands but provide carrier aggregation, the first antenna selection circuitry is configured to selectively couple each of a first plurality of RF ports to any one of a first low band port in the first diplexer and a second low band port in the second diplexer, while the second antenna selection circuitry is configured to selectively couple each of the second plurality of RF ports to any one of a first high band port in the first diplexer and a second high band port in the second diplexer.

Abstract: Disclosed herein are methods and systems that can help to more effectively select a cooperating set of cells for coordinated multipoint (CoMP) service. One illustrative method involves: (a) determining a donor status of a first base station that serves a first cell, wherein the donor status indicates whether or not the first base station is configured as a donor base station for at least one relay node, and (b) based at least in part on the determined donor status of the first base station, determining whether or not to include the first cell in a CoMP cooperating set.

Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, the apparatus is configured to determine a power control command including a target receiver power level for uplink transmission. The apparatus is configured to transmit a frame to a wireless device. The frame may include information associated with the determined target receiver power level for uplink transmission from the wireless device and a transmit power level at which the frame is to be transmitted. The information may enable the wireless device to compute a transmit power for the uplink transmission. The frame may include power control commands for other wireless devices.

Abstract: Communications systems, methods and devices having improved noise immunity are disclosed. In one embodiment, a method for improving noise immunity in a communication may include (1) at least one computer processor determining a region of interest in a received signal; (2) the at least one computer processor determining a surrogate candidate within the region of interest of the signal; and (3) the at least one computer processor encoding the surrogate candidate as a surrogate in a region of the signal other than the region of interest.

Abstract: A particular communications protocol is used for antenna training to accomplish directional communications in a wireless communications network. In some embodiments, pertinent information for various requests, responses, and status reports, is included in information elements.

Abstract: An adapter (10) comprises a single adapter output (45) connectable to at least one antenna line device (100a-c), at least two base station inputs (30a-c), the at least two base station inputs (30a-c) being individually connectable to a base station (110a-c) or a primary control device (460c) and at least one microcontroller (40a-c), the microcontroller (40a-c) being connected between one of the base station inputs (30a-c) and the single adapter output (45). An antenna system (5) comprising such an adapter (10) and a plurality of antenna line devices (100a-c) connected to the single adapter output (45) of the adapter is also disclosed. A method for operating the radio antenna (10) having a plurality of antenna line devices (100a-c) from at least two base stations (110a-c) is disclosed.

Abstract: A movable radio base station, M-RBS, configured to provide to a plurality of user equipments wireless access to a telecommunications network is changed from a first mode to a second mode that is different from the first mode. Each of the first mode and the second mode specifies a set of parameter values for operating parameters of the M-RBS.

Abstract: Various aspects of the present disclosure provide for methods, apparatus, and computer software for transmitting a common uplink burst in time division duplex (TDD) carriers. The common uplink burst includes a sounding reference signal (SRS) transmitted separate from (e.g., decoupled from) a demodulation reference signal (DM-RS). At least one symbol in the common uplink burst includes a control region for carrying control information and a data region for carrying data information. The SRS may be precoded separately from precoding of the control and data regions, so that the control and/or data information may be transmitted utilizing multiple input multiple output (MIMO).

Abstract: Exemplary embodiments described herein include systems, methods, and nodes for determining a frequency band for wireless backhaul. It may be determined that a utilization of a frequency band used for backhaul between a relay wireless device and an access node meets a criteria. An overhead may be calculated for a set of frequency bands available for use as backhaul between the relay wireless device and the access node, wherein the calculated overhead for a particular one of the set of frequency bands is based on at least one of a number of wireless devices that use the particular frequency band for carrier aggregation and a number of wireless devices that receive a beamformed signal over the particular frequency band. One of the set of frequency bands may be selected based on the calculated overhead. And the relay wireless device may be instructed to communicate wireless backhaul to the access node over the selected frequency.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method for operating a terminal in a wireless communication system comprises transmitting, to a base station, at least one reference signal through at least one first transmission beam and if ACK information for the at least one reference signal is received from the base station, transmitting, to the base station, the at least one reference signal through at least one second transmission beam. A width of the at least one second transmission beam is greater than a width of the at least one first transmission beam.

Abstract: A system comprises a modulator circuit, a test signal generator circuit, and a control circuit. The modulator circuit is operable to generate a data-carrying signal based on a reference signal. The test signal generator circuit is operable to generate a test signal based on the reference signal. The control circuit is operable to determine current status of a microwave backhaul link. The control circuit is operable to configure a nominal frequency at which the test signal generator circuit generates the test signal based on the determined status of the microwave backhaul link. The control circuit is operable to determine an amount of whitespace to have on either side of the test signal based on the current status of the microwave backhaul link. The control circuit is operable to configure the modulator circuit such that the data-carrying signal has the determined amount of whitespace surrounding the nominal frequency of the test signal.

Abstract: A calibration system, in a receiver chip, receives a plurality of receive signals at a plurality of receive paths. A first receive path and a second receive path is selected for a first receive signal and a second receive signal, respectively. A first signal parameter of the second receive signal is adjusted relative to the first signal parameter of the first receive signal to maximize a first signal strength value of an added signal or minimize a second signal strength value of a subtracted signal. Based on the adjusted first signal parameter, an offset of the first signal parameter is calibrated. Further, based on a matching of the second signal parameter in the second receive path relative to the second signal parameter in the first receive path, value of the second signal parameter is calibrated.

Abstract: Antenna switching circuitry includes an antenna node, a number of signal path nodes, and a number of switching elements. Each one of the switching elements is coupled between a different one of the signal path nodes and the antenna node. At least two of the signal path nodes are coupled together in order to form a low distortion node, such that the switching elements between the low distortion node and the antenna node are used to pass a low-distortion radio frequency (RF) signal. By coupling two of the signal path nodes together, a low distortion signal path is created to the antenna. Creating a low distortion signal path using multiple switching elements allows for the size of the switching elements to remain small, which reduces the parasitic capacitance of each one of the switches and therefore the insertion loss of the antenna switching circuitry.

Abstract: A portable communication device includes an appearance, a substrate and a switchable resonant antenna. The substrate is disposed in the appearance, and the substrate has a ground plane. The switchable resonant antenna comprises a first connection portion, a switching unit, a first metal element and a second metal element, where the first connection portion is electrically coupled between the ground plane and the switching unit, the switching unit is configured to electrically couple the first connection portion to the first metal element or the second metal element according to a control signal generated corresponding to a detecting result, in order to generate a first resonant mode.

Abstract: Methods, systems, and devices for wireless communication are described. An access point (AP) transmits instructions to quiet a dynamic frequency selection (DFS) home channel for a period of time. Instructions can include a quiet information element (IE) or a clear-to-send to self (CTS2Self) frame. The AP then allocates a first dedicated RF chain to a first media access control (MAC) component and a second dedicated RF chain, separate from the first dedicated RF chain, to a second MAC component of the access point. The allocation can include reducing the number of RF chains dedicated to the first MAC component. During the time period determined by the instructions, the first dedicated RF chain scans the home DFS channel and the second dedicated RF chain scans at least one other channel (e.g., based at least in part on the time period and channel scan priority) in the same band as the DFS home channel.

Abstract: A communication apparatus detects a communication partner apparatus and transmits a first signal. Then, in the case where the partner apparatus is detected and a response to the transmitted first signal has not been received from the partner apparatus, the communication apparatus transmits a second signal having a higher power level than the first signal.

Abstract: Disclosed are methods and systems for selecting a carrier on which to serve a user equipment device (UE). In particular, a base station may determine that a speed of movement of the UE is threshold high. In response to determining that the speed of movement of the UE is threshold high, the base station may select a carrier based on a group delay variation (GDV) of the selected carrier. For example, the base station may respond to the determining by selecting a carrier having a threshold low GDV. In another example, the base station may respond to the determining by selecting the carrier having the lowest GDV among two or more candidate carriers being considered as part of the selection process. As such, once a carrier is selected, the base station may then serve the UE on the selected carrier.

Abstract: An electronic device is provided. The electronic device includes a plurality of antennas and a communication circuit configured to electrically connect with at least one of the plurality of antennas, wherein the communication circuit is configured to obtain information of a level of a transmit power and transmit a signal based on a designated antenna among the plurality of antennas if the level of the transmit power is less than a level, determine an antenna for signal transmission among the plurality of antennas if the level of the transmit power is greater than or equal to the level, and perform an antenna switching operation of selecting the determined antenna.

Abstract: The present application discloses an antenna function extension apparatus, device, and method. The apparatus includes a control unit, a storage unit, an antenna identification unit, a modulation and demodulation unit, a power supply unit, a peripheral connection unit, a radio frequency (RF) channel, a first transceiver unit, and a second transceiver unit. The control unit is separately connected to the storage unit, the antenna identification unit, the peripheral connection unit, and the modulation and demodulation unit. The first transceiver unit is connected to the antenna identification unit. The second transceiver unit is separately connected to the modulation and demodulation unit, the power supply unit, and the peripheral connection unit.

Abstract: Systems and methods for wireless communications are disclosed. More particularly, aspects of the present disclosure generally relate to techniques for wireless communications by a first apparatus comprising obtaining, via at least first and second receive antennas having different polarizations, first and second training signals transmitted from a second apparatus via at least first and second transmit antennas having different polarizations, determining, based on the first and second training signals, one or more characteristics for different transmit-receive antenna pairs, each pair comprising one of the first or second transmit antennas and one of the first or second receive antennas, and generating, based on one or more characteristics, a parameter indicative of whether a link path between the first and second apparatuses is line of sight (LOS).

Abstract: RF front-end circuitry arranged to provide for RF Multiple-Input and Multiple-Output (MIMO) signals is disclosed. In one embodiment, the RF front-end circuitry may include an antenna port, a first multiple throw (MT) switch, and a second MT switch. The first MT switch is configured to selectively couple a first pole port to any one of a first set of throw ports, and the second MT switch is configured to selectively couple a second pole port to any one of a second set of throw ports. The first pole port of the first MT switch is coupled to the antenna port. More than one of the second set of throw ports of the second MT switch are coupled to transmit one or more receive MIMO signals to RF transceiver circuitry. Accordingly, the RF front-end circuitry routes receive MIMO signals from the antenna port to the RF transceiver circuitry.

Abstract: A method of performing a beamforming in a base station of a wireless communication system according to one embodiment of the present invention may include determining an effective range of an analog beam based on a gain of an analog beamforming in a hybrid beamforming, determining a precoding matrix for a digital beamforming in the hybrid beamforming based on the effective range of the analog beam, and performing the hybrid beamforming having the digital beamforming and the analog beamforming coupled therein based on the effective range and the precoding matrix.

Abstract: A method for the multiple beamforming training and an apparatus using the same are provided. An initiator determines a candidate sector to be used for a transmission during a sector sweep. After the initiator exchanges with a responder an information request frame and an information response frame about the multiple beamforming training through the candidate sector, the responder performs a plurality of beam refinement protocol (BRP) processes using a plurality of polarized channels through the candidate sector.

Abstract: Apparatuses and methods are disclosed that may perform ranging operations between an initiator device and a responder device. The initiator device may request the responder device to perform a ranging operation. The responder device may transmit a first fine timing measurement (FTM) frame to the initiator device, may receive an acknowledgement (ACK) frame from the responder device, and may transmit a second FTM frame to the initiator device. The second FTM frame may include a time value and angle information. The time value may indicate a difference between a time of departure (TOD) of the first FTM frame and a time of arrival (TOA) of the ACK frame. The angle information may indicate a direction of the initiator device relative to the responder device. The initiator device may determine its position, relative to the responder device, based at least in part on the received time value and angle information.

Abstract: Apparatus and method for communicating control data indicative of the capability of RF receiver equipment in wireless telecommunications devices. The control data is then used to allocate transmission resources to the telecommunications devices (including MTC-type terminals). Where a virtual carrier is established to carry data for a given MTC-type device, the position of the center frequency for that virtual carrier is assigned on the basis of both the capability of the RF receiver equipment of that terminal and the degree of traffic congestion on the frequency band at which the virtual carrier has been established.

Abstract: A broadcast signal transmitter is provided that includes an Forward Error Correction (FEC) encoder configured to error correction process Physical Layer Pipe (PLP) data; a bit interleaver configured to bit interleave the PLP data; a framer configured to generate a signal frame comprising the PLP data, the signal frame comprising a preamble and at least one subframe; a pilot inserter configured to insert Scattered Pilots (SPs) into the signal frame; and an Inverse Fast Fourier Transform (IFFT) modulator configured to perform Orthogonal Frequency Division Multiplexing (OFDM)-modulation on the signal frame. An SP pattern of the SPs is defined by Dx and Dy, the Dx being a separation of pilot bearing carriers in a frequency direction and the Dy being a number of symbols forming one scattered pilot sequence in a time direction. The amplitude of the SPs is determined from a SP boosting parameter and the SP pattern of the SPs.

Abstract: Certain aspects of the present disclosure relate to techniques and apparatus for estimating a distance between a first and second apparatus. For example, the first apparatus may obtain a plurality of training signals received in a plurality of directions from a second apparatus and estimate, based on the plurality of training signals, a distance between the first apparatus and the second apparatus. In certain aspects, the distance may be estimated based on a ratio of receive powers of first and second training signals of the plurality of training signals.

Abstract: Aspects of a method and system for scheduling multiple concurrent transmissions during a contention access period in a wireless communications network are presented. Aspects of the system comprise communicating devices (DEVs) within a piconet that are operable to derive a neighborhood map of a piconet. The neighborhood map information may enable a plurality of DEVs to concurrently transmit signals during a given channel time allocation (CTA) time slot. The ability for multiple DEVs to transmit signals concurrently during a single CTA time slot may increase spectral reuse within a wireless communication medium. In another aspect the system, the neighborhood map information may enable individual DEVs to set clear channel assessment (CCA) thresholds. Individual DEVs may utilize CCA threshold information to determine when to transmit signals to one or more destination DEVs and/or at what rate to transmit data via the signals.

Abstract: Apparatuses and methods are disclosed that may perform ranging operations between an initiator device and a responder device. The initiator device may request the responder device to perform a ranging operation. The responder device may transmit a first fine timing measurement (FTM) frame to the initiator device, may receive an acknowledgement (ACK) frame from the responder device, and may transmit a second FTM frame to the initiator device. The second FTM frame may include a time value and angle information. The time value may indicate a difference between a time of departure (TOD) of the first FTM frame and a time of arrival (TOA) of the ACK frame. The angle information may indicate a direction of the initiator device relative to the responder device.

Abstract: The present disclosure provides a big-data-mining-based wireless channel modeling method comprising: obtaining image information of a measurement environment and a channel impulse response data sample under a preset condition; obtaining at least one multipath wave and a channel parameter of each of the multipath wave according to the channel impulse response data sample using a channel parameter estimation algorithm; and clustering the at least one multipath wave according to the channel parameter of each of the multipath wave using a clustering algorithm to obtain at least one cluster; obtaining at least one scattering object in the measurement environment according to the image information of the measurement environment; matching each of the cluster with each of the scattering object to obtain a cluster kernel which is a cluster matching with the scattering object; establishing, a base wireless channel model under the preset condition according to all of the cluster kernel.

Abstract: Disclosed is a method and system for compensating excessive delay spread in uplink coordinated multipoint service. An uplink data-unit transmitted by a user equipment device (UE) on a first uplink air interface to a first base station (BS) using a first group of sub-carrier frequencies may be received at a time that is within an alignment-time range for simultaneously decoding uplink data-units from UEs transmitting on the first uplink. A determination is made that the uplink data-unit transmitted simultaneously by the UE on a second uplink air interface using a second group of sub-carrier frequencies will be received at a second BS at a time that is time is beyond the alignment-time range for simultaneously decoding uplink data-units from UEs transmitting on the second uplink. Decoding of the received uplink data-unit at the second BS is then delayed until a start time beyond the end of the alignment-time range.

Abstract: In accordance with an embodiment, a Radio Frequency (RF) front end system includes a first chip that includes a frequency multiplier coupled to a first input terminal. The frequency multiplier is configured to form an upscaled reference signal by upscaling in frequency an oscillating reference signal received at the first input terminal. The first chip also includes a Voltage-Controlled Oscillator (VCO) configured to provide a first oscillating VCO signal, and an oscillator switch coupled to the VCO and the frequency multiplier. The oscillator switch is configured to select a Local Oscillator (LO) signal from between the first oscillating VCO signal and the upscaled reference signal. The first chip also includes a first phase shifter coupled to an output of the oscillator switch, and a modulator having an input coupled to an output of the first phase shifter.

Abstract: Techniques are described for wireless communications. In one example, multiple signals including at least a wireless local area network (WLAN) signal and a cellular signal may be received over a bandwidth of an unlicensed radio frequency spectrum band. Digital samples of the signals may be stored in a buffer. At least a portion of the WLAN signal may be reconstructed from the stored digital samples and removed from the stored digital samples before the contents of the buffer are converted to the frequency domain for demodulation and decoding of the cellular signal by a cellular receiver. In another example, multiple signals may be received over a bandwidth of an unlicensed radio frequency spectrum band, and it may be determined whether to apply codeword-level interference cancelation (CWIC) or symbol-level interference cancelation (SLIC) to remove an interference signal in the multiple signals.

Abstract: Adaptive self-tunable antenna systems and methods are provided including a closed-loop system for sensing near-field RF signals of transmitted RF signals and tuning an antenna or switching between multiple antennas, so that the strength of the transmitted RF signals is maximized. A sensing antenna detects the near-field RF signal, which is filtered and converted to an RF strength control signal that can be used to generate an antenna tuning control signal. An antenna tuner uses the antenna tuning control signal to keep the antenna in resonance by dynamically changing the electrical length of the antenna or switching between multiple antennas to maximize the strength of the radiated RF signal. Such antennas may be less prone to detuning due to interaction with human bodies or other objects. Dynamically matching the antennas to an RF power amplifier and low noise amplifier can improve stability, power efficiency, gain, noise figure, and receiver sensitivity.

Abstract: A broadcasting signal reception method according to the present invention comprises the following steps: OFDM-demodulating by receiving a plurality of broadcasting signals, which contain a transmission frame for transmitting a broadcasting service; outputting the transmission frame by decoding a plurality of OFDM-demodulated broadcasting signals with at least one method among MIMO, MISO, and SISO; and selectively decoding a plurality of PLP's, which are included in the transmission frame, using signaling information included in the transmission frame. In particular, PSI/SI such as PAT/PMT can be transmitted through an arbitrary PLP among the plurality of PLP's; and in the transmitter, an arbitrary PLP, which transmits the PAT/PMP, can be decoded first to enable a search of all PLP's that transmit components included in a single broadcasting service, and a plurality of PLP's can be decoded selectively.

Abstract: The present disclosure discloses a method in a wireless access network node for controlling a UE. The UE comprises at least two transmit antennas, and is capable of uplink transmit diversity. There is an antenna weight associated with each transmit antenna. First, the wireless access network node determines that the antenna weights of the user equipment may be controlled. Then, it creates a control signal that comprises control information and transmits it to the user equipment. The control information controls a UE autonomous selection of the antenna weights in the UE.

Abstract: A first network device including a radio frequency (RF), baseband, and medium access control (MAC) modules. The RF module: based on a predetermined primary mode, selects a first band from bands including a sub-1 GHz, IEEE 802.11ah, and IEEE 802.11af bands; in the first band, receives a radio or intermediate frequency signal; and converts the radio or intermediate frequency signal to a baseband signal. The baseband module: based on the primary mode, selects a secondary mode and a first bandwidth from multiple bandwidths, where the secondary mode has a corresponding data rate and the bandwidths include a bandwidth downclocked from an IEEE 802.11ac or 1 MHz bandwidth; receives the baseband signal from the RF module, where the baseband signal has the first bandwidth; and based on the baseband signal, outputs a frame included in the baseband signal. The MAC module receives the frame from the baseband module at the data rate.

Abstract: A phased array antenna system includes an array of antennas having first antenna and second antennas disposed equidistantly from a third antenna. The first antenna is associated with a first gain and a first phase and the second antenna is associated with a second gain and a second phase. The first antenna receives a first reference signal corresponding to a calibration reference signal transmitted by the third antenna, and the second antenna receives a second reference signal corresponding to the calibration reference signal transmitted by the third antenna. The second receiver module is configured to adjust the second gain and the second phase associated with the second antenna to match the first gain and the first phase associated with the first antenna by comparing the first reference signal received by the first antenna with the second reference signal received by the second antenna.

Abstract: A wearable device includes a housing, a first short range transceiver for far field communication disposed within the housing, a second short range transceiver for near field communication disposed within the housing, wherein the second short range transceiver for near field communications comprises a core and a plurality of coil turns wrapped around the core. The wearable device further includes a generally planar printed circuit board disposed within the housing and having a plurality of components mounted thereto. The core is mounted perpendicularly to the plurality of components mounted on the generally planar printed circuit board to thereby reduce electromagnetic interference. The wearable device may be an earpiece. The core may be mounted at a posterosuperior portion of the wearable device.

Abstract: Embodiments of a communication station and method for communicating in a wireless network are generally described herein. In some embodiments, the communication station may be configured to communicate orthogonal frequency division multiplexed (OFDM) symbols on channel resources in accordance with an orthogonal frequency division multiple access (OFDMA) technique during a control period. The channel resources may comprise one or more minimum bandwidth units. Each minimum bandwidth unit may have a predetermined bandwidth and may be configured in accordance with one of a plurality of subcarrier allocations for one of a plurality of interleaver configurations.

Abstract: Aspects of the subject disclosure may include, for example, a method for down-converting a long-range communication signal that is wirelessly received via a first antenna of a communication device to extract a first version of a baseband signal, down-converting a short-range communication signal wirelessly received from a second device via a second antenna of the communication device to extract a second version of the baseband signal from the long-range communication signal that can be received at the second device, which is remote from the communication device, via a second antenna. The first version and second version of the baseband signal can be combined to generate an information signal that can be processed. Other embodiments are disclosed.

Abstract: An ear piece for use by an individual having an external auditory canal includes an earpiece housing configured for placement at, on or within the external auditory canal of the individual, a processor disposed within the ear piece housing, at least one microphone disposed at the earpiece housing wherein the at least one earpiece is positioned to detect ambient environmental sound, and at least one speaker disposed within the earpiece housing at a position to direct sound towards a tympanic membrane of the individual. The ear piece is configured to detect ambient environmental sound proximate the external auditory canal of the individual using the at least one microphone and reproduce the ambient environmental sound at the at least one speaker within the earpiece housing. The ear piece may include a spectrometer for detecting ambient environmental lighting. The earpiece may include a number of biological sensors.

Abstract: Provided is an intelligent garage door switch control system and method thereof. The system includes a transmitting radio frequency device, a receiving radio frequency device, and a control circuit for operating a switch. The control circuit is configured to use a predetermined pattern detected as the basis to operate the switch. The predetermined pattern includes a first acceleration from a speed of 0 to a speed greater than 0, a first deceleration from a speed greater than 0 down to a speed of 0 thereafter, and a second acceleration from a speed of 0 to a speed greater than 0 thereafter.

Abstract: A multi-band synchronizer that performs robustly in the presence of partial-band interference by breaking down the correlation of a sync waveform at a plurality of times, with one or more received signal branches into a multitude of sub-band correlations, and combining the sub-band correlations such that the impact of partial-band interference on synchronization performance is significantly mitigated is disclosed.

Abstract: Techniques for supporting distributed multiple-input multiple-output (MIMO) transmissions are described. In one design, a user equipment (UE) determines channel estimates for multiple cells and reports the channel estimates. The UE thereafter receives a data transmission sent by the multiple cells to the UE based on the channel estimates. The data transmission may include at least one data stream, and each data stream may be sent by one cell or the multiple cells to the UE. In another design, a UE determines first and second channel estimates for first and second cells, respectively, and reports the channel estimates. The UE then receives a first data transmission sent by the first cell to the UE based on the first channel estimate. The UE also receives a second data transmission sent by the second cell to another UE and steered away from the UE based on the second channel estimate.

Abstract: Systems, apparatus, methods, and manufactures for performing link adaptation in a communications system are described. The methods may employ an error rate table that has a channel condition value dimension and a transmission parameter dimension. The elements of the error rate table include expected error rates for data transmitted at various channel conditions according to various transmission parameters. Also, the various transmission parameters may each be associated with a data transmission rate. For a given channel condition value, the methods may determine expected throughputs for each of the transmission parameters according to the associated expected error rates and data transmission rates. A transmission parameter may be selected according to the expected throughputs.

Abstract: A method in a wireless system, including: receiving, at a wireless device, over first and second networks, from each of plural radios of the first and second networks, respective first and second sets of reference signals received from first radios of the first and second networks, and plural further reference signals received from remaining radios of plural radios of the first and second networks, the first radios of the first and second networks located at a common location; calculating first and second sets of normalized reference signals from ratios for each further reference signal of the first and second sets of reference signals with the first and second reference signals of the first and second sets of reference signals; comparing predictions of signal loss based on the first and second sets of normalized reference signals; and determining an estimate of shadow fading or signal reflectors using the comparison result.