Abstract: Embodiments of the present invention include systems for determining locations of UWB transmitters. The system (100) includes multiple UWB receivers (104) for receiving a UWB signal (120) emitted by a UWB transmitter (106). Each receiver (104) includes: RF amplifiers (306) arranged in a cascade structure, the RF amplifiers (306) receive and amplify the UWB signal; multiple baseband blocks (308), each of the baseband blocks is coupled to the corresponding RF amplifier (306) and taps an output signal from the corresponding RF amplifier; and a processor (320) coupled to the multiple baseband blocks (308), the processor processes output signals from the multiple baseband blocks (308) to identify the UWB signal (120). The system (100) also includes a server (110) coupled to the multiple receivers (104), the server (110) receives the identified UWB signals from the multiple receivers (104) and determines the location of the UWB transmitter (106) using the identified UWB signals.

Abstract: A system and method for non-linear digital self-interference cancellation including a pre-processor that generates a first pre-processed digital transmit signal from a digital transmit signal of a full-duplex radio, a non-linear transformer that transforms the first pre-processed digital transmit signal into a non-linear self-interference signal according to a transform configuration, a transform adaptor that sets the transform configuration of the non-linear transformer, and a post-processor that combines the non-linear self-interference signal with a digital receive signal of the full-duplex radio.

Abstract: A non-anchor radio base station (310B) comprises an interface (315B) that notifies the anchor radio base station (310A) of a delay profile between the non-anchor radio base station (310B) and the UE (10). An anchor radio base station (310A) comprises an interface (315A) that notifies a non-anchor radio base station (310B), notifying the delay profile which does not satisfy a predetermined condition, of stoppage of a process of transmitting an uplink signal before decoding through a backhaul network. The non-anchor radio base station (310B) comprises an interface (315B) that stops the process of transmitting the uplink signal before decoding when the non-anchor radio base station (310B) is notified of the stoppage of the process of transmitting the uplink signal before decoding.

Abstract: Embodiments of a wireless communication unit and operation of such unit in a test mode are provided, where a wireless communication unit includes: transmit and receive path circuitry coupled to an antenna via a switch; which is operated to: close the switch to connect the transmit path circuitry to the antenna, wherein the receive path circuitry remains unconnected, activate the transmit path circuitry to transmit an RF test signal on the antenna, wherein the RF test signal couples across the switch as a leakage signal, activate the receive path circuitry concurrently as the RF test signal is transmitted, wherein the receive path circuitry provides the leakage signal to an RF to DC converter via a directional coupler, and wherein the RF to DC converter is configured to generate an error signal that indicates whether an error has been detected in the receive path circuitry.

Abstract: The present invention provides communication technology (transmitter and receiver systems) for communicating data from the transmitter to one or more terminals' receivers over one or more communication channels. The communication channel is transmitted in burst communication mode such that transmission signal includes transmission data time slots at which one or more of said communication frames are encoded in the signal and one or more recess time slots between them. The communication receiver is adapted for processing signals of the burst mode communication channel and is operable for processing at least a portion of a signal received in the communication channel after a recess time period during which communication frames were not transmitted to determine a carrier frequency of the communication channel, based on a single communication frame appearing in the communication channel after the recess time period.

Abstract: An anti-aliasing channel estimation apparatus and method and a receiver where the anti-aliasing channel estimation method includes: performing clock recovery and data synchronization on a received multicarrier signal with channel aliasing, to obtain a synchronized time-domain signal and a sampling phase; calculating an estimation signal after passing through a channel and being aliased based on a training sequence and the sampling phase, and obtaining a channel response and an aliasing signal response of each subcarrier of the multicarrier signal based on the estimation signal and the frequency-domain signal. Therefore, channel estimation may be performed on the multicarrier signal with channel aliasing, influence of the channel aliasing on the bit error rate may be lowered, and transmission quality of the system may be improved.

Abstract: The present disclosure discloses a transmitter and a monitoring system using this transmitter, the transmitter includes: a multi-to-one multiplexing switch configured to receive a plurality of sensor signals of a plurality of channels through a plurality of input terminals, select one sensor signal from the plurality of sensor signals, and output the selected sensor signal through a output terminal; a first variable gain amplifier configured to receive the selected sensor signal, amplify the selected sensor signal with a gain within a first gain range, and output the amplified sensor signal; a control parameter input terminal configured to receive an input control parameter from outside of the transmitter; and an operating and switching selector configured to perform operations according to the input control parameter, so as to control the multi-to-one multiplexing switch to select the one sensor signal and control the gain of the first variable gain amplifier.

Abstract: One embodiment covers an apparatus for generating a transmission signal. The apparatus may include a signal generator that generates a first signal with a first frequency spectrum comprising a carrier frequency; a power control unit that provides a power information signal which represents a signal level of the transmission signal residing at the carrier frequency; a first signal shaper for noise-shaping the first signal based on the power information signal to form a second signal which has a noise component in at least one frequency range remote from the carrier frequency, the noise component of the second signal being from one or more signal components associated with the carrier frequency; and a signal output that provides the second signal in the form of a transmission signal.

Abstract: The present disclosure provides a signal processing system and method for a non-orthogonal multiple access communication system, a base station and a user equipment. The signal processing system is configured to perform interleaving processing on information to be transmitted subjected to modulation processing. The signal processing system can obtain at least one of the following beneficial effects: capable of saving length of an interleaver; and capable of obtaining more diversity gain.

Abstract: An apparatus includes at least one processor and a transceiver. The at least one processor is configured to execute computer readable instructions to: acquire first location information representing locations of a plurality of user terminals, second location information representing a location of at least one vehicle, and third location information representing a location of a destination of the plurality of user terminals; and determine a route from the location of the at least one vehicle to the location of the destination based on the first location information, the second location information and the third location information, wherein the route includes the location of each of the plurality of user terminals. The transceiver is configured to transmit the route to the plurality of user terminals.

Abstract: A method for operating a mobile device adapted for device-to-device (D2D) communications includes determining a utilization measure for discovery resources (DRs) allocated for D2D discovery in a communications system, and sending a utilization measure report to an evolved NodeB (eNB) when a reporting criterion is satisfied, wherein the utilization measure report is configured to prompt an adjustment to a number of DRs allocated for D2D discovery when an adjustment condition is met.

Abstract: Embodiments of this disclosure provide an apparatus and method for estimating a frequency offset, an apparatus and method for estimating a channel spacing and a system. The apparatus for estimating a frequency offset includes: a synchronization extracting unit configured to perform a training sequence synchronization extraction on a receiving sequence containing a periodic training sequence to obtain the training sequence; a delay correlation processing unit configured to parallelly perform autocorrelation operations of different delay amounts on the training sequence to obtain multiple parallel correlation sequences; a superimposition processing unit configured to perform a superimposition operation on the multiple parallel correlation sequences to obtain a single sequence; and a frequency offset estimating unit configured to determine a frequency offset according to a phase of a synchronization position of the single sequence in the training sequence.

Abstract: A transmission device includes a first converter, a second converter, a generation component, and a transmitter. The first converter converts a first analog signal, which is a broadcast signal of a specific polarity, into a first digital signal. The second converter converts a second analog signal, which is a broadcast signal whose polarity is different from the specific polarity, into a second digital signal. The generation component generates a third digital signal that includes information of the first and second digital signals. The transmitter transmits the third digital signal generated by the generation component.

Abstract: A method and system for auto-configuration of a DSL modem in a wireline broadband network is disclosed. The method includes initiating, at a Subscriber Identification Module (SIM) card, a configuration request for configuring the DSL modem, wherein the SIM card is located within the DSL modem. After initiating, the configuration request is transferred from the SIM card to a configuration server over a mobile communication network. Thereafter, a configuration data corresponding to the configuration request is transferred to the SIM card over the mobile communication network from the configuration server, wherein the configuration data is determined based on at least one parameter associated with the configuration request. The SIM card receives the configuration data sent by the configuration server and automatically configures the DSL modem in response to receiving the configuration data from the configuration server.

Abstract: A phase-locked loop (PLL) filter of a read channel includes a filter portion having an input coupled to delay circuitry having an output. The input of the filter portion is configured to receive a phase error signal. A look-up table is coupled to the filter portion. The look-up table comprises phase coefficients and frequency coefficients associated with a plurality of phase error magnitudes. The look-up table is configured to provide one or both of a selected phase coefficient and a selected frequency coefficient based on a magnitude of the phase error signal. The PLL filter is configured to adjust a bandwidth of the filter portion using one or both of the selected phase coefficient and the selected frequency coefficient. A phase signal indicative of estimated phase disturbance is produced at the output of the delay circuitry.

Abstract: A method and apparatus for Data Transmission Oriented on the Object, Communication Media, Agents, and State of Communication Systems (TOMAS) is disclosed. TOMAS addresses an issue of efficiency of conventional data communication systems. The superior efficiency of TOMAS is achieved by: 1) matching the requirements of agents with capabilities of the communication systems and the communication media using the features of data objects; 2) monitoring of time-varying characteristics of all components, such as a charge of batteries and a status of all hardware, firmware and software components; 3) using an information about time-invariant characteristics of the systems, such as devices screen sizes, employed operational systems (OS), etc.; 4) using a flexible system architecture; and 5) using a fast signal processing algorithm described in [12] and [9] at the stage of data object analysis-syntesis and the codestream multiplexing-demultiplexing.

Abstract: Disclosed herein are hub-based wireless networks employing end-devices at intermediate wireless at ranges of thousands of meters, utilizing packets that include a preamble and a data payload. End-devices may be such things as keypads, door latches, occupancy monitors, sprinkler controllers and other devices controlled or monitored in a campus or a collection of buildings. A digital spread-spectrum frequency hopping rotation is used, wherein packet transmissions rotate through frequency sequences to spread radio-frequency emissions impact over a set of frequencies. A spectrum-impact-smoothed channel set is fashioned using sequences that each specify a unique preamble frequency relative to the other sequences and channels. The set is traversed as packets are transmitted, thereby distributing the focused radio-frequency emission impact of packets having long preambles over time.

Abstract: A clocking arrangement for transceivers in an integrated circuit device includes a plurality of fractionally adjustable phase-locked loops. Each respective one of the fractionally adjustable phase-locked loops generates a respective transmit frequency for a respective one of the transceivers. There is a respective clock-data recovery module in a receive portion of each respective one of the transceivers, and each respective clock-data recovery module includes a respective fractionally adjustable frequency-lock loop. There is a reference clock input providing a reference clock for a plurality of the fractionally adjustable phase-locked loops and the fractionally adjustable frequency-lock loops. The reference clock input can be a sole reference clock input providing a reference clock for all of the adjustable phase-locked frequency-lock loops.

Abstract: A method for communicating data in a network node is disclosed. A data transmission is received from a first network node at a second network node. The first network node is configured to perform decode-and-forward operations and the second network node configured to perform compression operations. A compression index to be used for conveying the data transmission is generated. The generated compression index is encoded using superposition coding. The compression index is sent to at least the first network node.

Abstract: Systems and methods for providing indications about the TX RF non-linear impairments are disclosed. In accordance with some implementations, a first device (UE or base station) estimates EVM indications for the signal and determines if the EVM indications is above a threshold. The first device may transmit the estimated TX non-linearity indications such as AM-AM, AM-PM, Volterra coefficients, and/or other performance metrics to a second device, that transmitted the signal, when it is determined that the EVM indications is above the threshold. Systems and methods for wireless communication impairment correction are also disclosed wherein, in accordance with some implementations, a first device receives estimated TX non-linearity indications such as AM-AM, AM-PM, and/or Volterra coefficients from a second device and performs non-linear correction of a transmit signal for the second receiver device based at least in part on the EVM indications.