Abstract: The present invention provides a precoding matrix indicator feedback method, a receive end, and a transmit end. The method includes: selecting, by a receive end based on a reference signal, a precoding matrix W from a codebook, where a coefficient ? is used to perform phase adjustment on ?n in W, ?n represents a phase difference between weighted values of a first antenna group and a second antenna group of a transmit end for a transmission signal from a same transmission layer, ? n ? { ? j2? ? ? n Q } , and the first antenna group and the second antenna group belong to a same multi-antenna system; and sending, by the receive end, a precoding matrix indicator (PMI) to the transmit end. In this way, using the coefficient ? to perform the phase adjustment on ?n can increase a size of a codebook set applicable to different antenna configurations, and improve precision of the receive end to feed back a PMI.

Abstract: A technique includes (i) receiving a first pilot signal from a base station via a receiver of a client device, or (ii) transmitting a second pilot signal from the client device to the base station via a transmitter of the client device. First time differences and signal quality values for N samples of N respective packets in the first pilot signal are determined. Second time differences and signal quality values are received via the receiver. The second time differences and signal quality values are generated for M samples of M respective packets in the second pilot signal. An offset value is determined based on (i) the first time differences and signal quality values, or (ii) the second time differences and signal quality values. Activation or deactivation times of the receiver or the transmitter or transmission times of the transmitter are adjusted based on the offset value.

Abstract: Embodiments of the present invention provide a method, an apparatus, and a system for sending data in hybrid networking. The method includes: determining an order quantity N of highest-order MIMO data and a quantity M of data types in the hybrid networking, where N is an even number not less than 2, and M is a natural number not less than 2; performing ith linear transformation processing on ith-type data among the M types of data, to obtain N pieces of ith-type output data having a same power, where i is a natural number less than or equal to M; and respectively outputting the N pieces of ith-type output data having a same power to N physical antennas, so that each physical antenna combines output data received by the physical antenna and then sends data obtained after the combining.

Abstract: A non-transitory computer readable medium including instructions which, when executed by one or more hardware processors, causes performance of operations. The operations include: obtaining a first pathloss value for a first data transmitted between a first device and a second device; receiving, at a first component of the first device, a second data to be transmitted to the second device; based at least on the first pathloss value: selecting a first subset of the second data for transmission from the first component to a second component of the first device, where the second component is configured for causing transmission of the first subset of the second data to the second device; transmitting, during a first period of time from the first component to the second component, the first subset of the second data.

Abstract: Methods, systems, and devices are described for wireless communication. An access point (AP) may determine a single user bias for a wireless device based on a feedback signal-to-noise ratio (SNR) and an SNR based on a modulation and coding scheme (MCS). The AP may also determine a multi-user SNR for the wireless device based on the feedback SNR, the single user bias, a multi user loss, and a group bias. The AP may then select an updated MCS based on the multi-user SNR. In some cases, the AP may transmit a reference signal to the wireless device and receive a compressed beamforming feedback report from the wireless device based on the reference signal. The feedback SNR may be based on the compressed beamforming feedback report. The AP may also maintain a blacklist of groups with channel correlation that satisfies a threshold, and refrain from scheduling those groups together.

Abstract: Techniques are disclosed relating to synchronization of radios in a large antenna count (LAC) system. In some embodiments, a LAC system includes a plurality of slave radios, a clock and trigger distribution system, and a master device. In these embodiments, the plurality of slave radios are configured to establish a fixed relationship between a reference clock and their respective local clocks. In these embodiments, the master device and plurality of slave radios are configured to generate and align respective common periodic time reference (CPTR) signals, at a lower frequency than the local clocks. In these embodiments, the master device is configured to transmit a trigger signal based on its CPTR and the plurality of slave radios are configured to perform an action based on the trigger at a subsequent edge of their CPTRs. This may allow synchronization of sampling for antennas in a massive MIMO base station, for example.

Abstract: A system and methodology for exploiting channel correlation in time and/or frequency to reduce CQI feedback in wireless communications systems. By compressing CQI feedback at the receiver to reduce redundancy in CQI feedback information that results from the channel correlation, the average feedback rate is reduced. Redundancy in time may be removed from the CQI feedback by monitoring variations of the CQI information in time at the receiver so that a codebook index for a given reporting instance is communicated to the transmitter only if it differs from the codebook index for the previous reporting instance. Otherwise, no feedback is performed.

Abstract: The inventors have recognized that in RF communication systems, by switching between transmit antennas of an RF transmitter on a sub-symbol basis (antenna index coding), and/or by adaptively determining how often antenna switching occurs (adaptive antenna hopping), an increased amount of data may be wirelessly transmitted to an RF receiver without significantly increasing energy consumption. The inventors have determined that in certain systems, such as ZigBee, data symbols consist of elementary waveform patterns, and that such waveform patterns for transmit antennas may be stored by an RF receiver for later determining transmit antennas for data symbols. The inventors have also determined that the invention may be applied in the frequency domain, such as to OFDM, by storing subcarrier waveform patterns for particular transmit antennas and later determining transmit antennas for subcarriers of data symbols.

Abstract: One embodiment provides a method, including: displaying a plurality of contents via a display screen of a first electronic device; determining a subset of a plurality of antennas of the first electronic device based on positions of the antennas relative to the display screen, wherein said subset of antennas corresponds with respective contents as displayed via the display screen of the first electronic device; activating the subset of the antennas of the first electronic device to determine a target antenna from said subset of the antennas that is closest to a second electronic device arranged with respect to the display screen of the first electronic device; and transmitting a target content from said contents as displayed from the first electronic device to the second electronic device, wherein the target content corresponds with the target antenna. Other aspects are described and claimed.

Abstract: An intelligent backhaul system is disclosed for deployment in the presence of existing radio systems. A backhaul system for co-channel deployment with existing licensed and unlicensed wireless networks, including conventional cellular backhaul radios, Common Carrier Fixed Point-to-Point Microwave Service, Private Operational Fixed Point-to-Point Microwave Service and other FCC 47 C.F.R. §101 licensed microwave networks is disclosed. Processing and network elements to manage and control the deployment and management of backhaul of radios that connect remote edge access networks to core networks in a geographic zone which co-exist with such existing systems or other sources of interference within a radio environment are also disclosed.

Abstract: A method of configuring a beam forming antenna in a communication network that comprises a first node where the beam forming antenna is located, second nodes and at least one destination node, communication links being established between said first node and said at least one destination node through at least some of said second nodes. The method comprises: emitting a signal by the beam forming antenna configured with a first set of antenna parameters; the same signal being sent from the first node to several second nodes; obtaining, for a plurality of communication links through which the signal has been sent, at least one physical magnitude representing the distortion caused by each communication link to the signal; aggregating said physical magnitudes of said plurality of communication links; and obtaining a second set of antenna parameters for configuring the beam forming antenna in accordance with said aggregated physical magnitudes.

Abstract: A multi-input multi-output (MIMO) system considers either reliability for each antenna or a time/frequency location, and transmits a signal at an unequal ratio for each antenna according to the consideration result. The method for use in the MIMO system including multiple antennas includes processing a signal according to an unequal ratio transmission scheme employing the multiple antennas at an unequal ratio, and transmitting the processed signal via the multiple antennas.

Abstract: Wireless communication systems employ Multiple Input Multiple Output (MIMO) transmission and reception schemes to increase performance and the data rate of the system. A new approach for an SM-MIMO decoder that operates on the received symbols in parallel is presented. The new approach performs two different QR decompositions of the estimated channel matrix and produces two triangular matrices; one is right triangular and the other is left triangular. The modified systems of equations are processed in parallel. After each M-algorithm process has processed half of the total number of stages, total search space for the globally optimal transmitted symbol vector is reduced significantly. Finally, cumulative distance metrics are computed for the symbol sequences in the reduced search space and a global minimum is determined for the estimated transmitted symbol vector. This approach offers faster processing of the SM-MIMO signals and reduced distance metric computations and search operations.

Abstract: Provided is an antenna apparatus equipped with a single RF chain. The antenna apparatus includes: a combiner configured to divide omnidirectional space into N sectors to perform a sector sweep, combine a reception signal received via the single RF chain for each sector and calculate a gain of a composite signal; a comparator configured to determine a gain magnitude of the composite signal; and a controller configured to perform a beam-forming according to a comparison result of the gain magnitude of the comparator.

Abstract: It is presented a relay device arranged to act as a relay to provide relayed access for at least one wireless device within a vehicle to a cellular radio communication network. The relay device comprises: a relay node device comprising a vehicle antenna for communicating with the at least one wireless device; a first directional antenna directed in a first direction, the first directional antenna being connected to the relay node device; and a second antenna which is not directed in the first direction, the second antenna being connected to the relay node device. The first directional antenna and second antenna are arranged to communicate with fixed radio base stations of the cellular radio communication network; and the first direction is essentially parallel to a direction of travel of the vehicle. A corresponding vehicle and method are also presented.

Abstract: A communication device that is capable of communicating with a mobile terminal in cooperation with another communication device, and is capable of communicating with the mobile terminal via the other communication device. This communication device characteristically includes: a mode selecting unit configured to select one of a cooperative communication mode and a relayed communication mode, the cooperative communication mode being for transmitting notification information to the mobile terminal, the notification information being for causing the other communication device to perform a cooperative communication, the relayed communication mode being for causing the other communication device to relay notification information to the mobile terminal; and a mode information transmitting unit configured to transmit mode information to the other communication device, the mode information indicating a result from the mode selecting unit.

Abstract: A communication system includes a plurality of DeNBs (base stations) and a plurality of RNs (relay nodes), wherein each RN has a radio connection with a DeNB. Each DeNB acquires time resource configuration applied between another base station and a relay node connected with said another base station.

Abstract: A method and a satellite communication system are provided. At least one satellite gateway earth station receives at least one multicast stream from an external network. In a static forwarding mode, the at least one satellite gateway earth station replicates and forwards traffic from the at least one multicast stream over at least one first respective outroute carrier of at least one first respective spot beam of a satellite regardless of whether any terminal is arranged to actively receive any of the at least one multicast stream. In a dynamic forwarding mode, the at least one satellite gateway earth station replicates and forwards second traffic from any of the at least one multicast stream over at least one second respective outroute carrier of at least one second respective spot beam only when at least one respective terminal is arranged to actively receive the any of the at least one multicast stream.

Abstract: Systems, methods and devices for mobile ground-to-air and air-to-ground communication network acceleration. The aircraft-based data acceleration device, system and method creates a faster connection to increase data throughput by accelerating, compressing (when possible) and or caching frequency transmitted data streams. The data communication network acceleration system and method integrates use of acceleration, compression, and caching technologies in the ground-based communication system and the aircraft-based data communication accelerator and corresponding onboard data communication router.

Abstract: The invention relates to a communication system comprising a terminal (10), a first device (1) adapted to exchange data with said terminal (10), a second device (2) adapted to exchange data with said terminal (10), characterized in that it comprises means for pairing said first (1) and second (2) devices so as said second device (2) exchanges data with said terminal (10) through said first device (1).

Abstract: Provided is a method for receiving a frame, which is to be performed by a station (STA) in a wireless LAN system. The method includes receiving a multicast frame from an access point (AP). The multicast frame includes a medium access control (MAC) header. The MAC header includes a transmitter address (TA) field and a receiver address (RA) field. The RA field includes a multicast association identifier for identifying an STA group including said STA.

Abstract: In a mobile communication system using a code division multiple access (CDMA) method, spreading code detection and frame/slot timing synchronization (cell search) is conducted by using a long code masked symbol. The spreading factor of the long code masked symbol is set to a value lower than spreading factors of other ordinary symbols. As a result, it becomes possible to reduce the circuit scale and power dissipation of the mobile terminal and raise the speed of cell search.

Abstract: Potential points of neighborhood node ingress in a cable communication system are identified based on a neighborhood node ingress map. One or more local test signals are then transmitted at or proximate to the potential point(s) of ingress. A local test signal amplitude is received/monitored at or proximate to the potential point(s) of ingress, wherein the amplitude represents a strength of a received test signal based on ingress of the transmitted test signal into one or more faults of the cable communication system. Accordingly, the one or more faults may be identified based on relatively higher received/monitored test signal amplitudes pursuant to transmission of the test signal(s) at or proximate to the potential point(s) of ingress.

Abstract: The light reception unit is disposed behind each of a plurality of light sources that emits signal lights having mutually different wavelengths in a forward direction and receives a backlight emitted backward from each of the light sources. The synchronizing signal generation unit generates a synchronizing signal serving as an electric signal synchronized in phase with a drive signal for driving each of the light sources. The multiplication unit multiplies the synchronizing signal and a light reception signal serving as an electric signal obtained by receiving the backlight by the light reception unit. The light power detection unit detects power of the signal light by multiplying an integrated value of a multiplication signal obtained by multiplying the synchronizing signal and the light reception signal by the multiplication unit and a power ratio of the signal light to the backlight stored in a predetermined storage unit.

Abstract: A Passive Optical Network, PON, comprising an Optical Line Termination, OLT, connected to one or more Optical Network Terminals, ONT, over an Optical Distribution Network, ODN, is monitored by a monitoring device. The monitoring device comprises an Optical Frequency Domain Reflectometer, OFDR, and is arranged to monitor the optical power received by the OLT and the ONTs of the PON, and to perform transceiver analysis of the OLT and the ONTs, combined with an OFDR analysis of the ODN, based on the monitored optical power violating a threshold.

Abstract: A test apparatus and method for testing passive optical networks is provided. The test apparatus includes an optical circuit having an optical coupler for splitting off a portion of optical traffic. During testing of a passive optical network, the optical circuit is coupled into an optical path of the passive optical network. A bit stream corresponding to an activating procedure is captured and analyzed to extract identification information of the module that sent the bit stream.

Abstract: A measurement device relates to a Halios system for measuring an optical transmission path, in which at least one receiver and a compensation transmitter are optically separated from each other by an optical barrier in such a matter that a direct irradiation of said receiver by said compensation transmitter is not possible. Said compensation transmitter and a transmitter are of the same type and/or have at least a common electric optical working point in an optical working point. Said optical barrier has a compensation path, characterized by a compensation window, which attenuates the light of the compensation transmitter before it hits the receiver in such a manner that the compensation transmitter and said transmitter are operated at least in an optical working point by a controller in said identical electro-optical working point.

Abstract: The present invention provides an Ethernet performance detection method and system and an optical network terminal. The method includes: receiving, by an ONT, a detection configuration instruction, and configuring a maintenance end point according to the detection configuration instruction; configuring a performance detection path from the MEP to the VMEP according to states of the virtual maintenance end points configured on a main node and a backup node, wherein the VMEP includes two virtual MEPs, the IDs of the two virtual MEPs are identical, at the same moment; and transmitting a message to a node corresponding to the virtual MEP with the main state. When the node states of the main node and backup node are switched, the optical network terminal may automatically switch the performance detection path to the node corresponding to the virtual MEP, in order to continue to perform the network performance detection.

Abstract: Systems and apparatus for a wirelessly-powered passive optical power meter device. In one aspect, an optical power meter device comprises a power circuit connected to one or more antennas, the circuit including an RF to DC converter that generates a DC power signal that provides a DC power source for the optical power meter from an RF signal received by the one or more antennas, a photodetector that generates a power measurement signal that measures the power of the optical input signal, and a communication circuit that is connected to the one or more antennas, the photodetector, and the power circuit that when powered by the DC power source generates a modulation signal that is responsive to the power measurement signal and that causes the one of the one or more antennas to convey the power measurement signal to a reader device that is transmitting the RF signal.

Abstract: A TIA comprises a TIA core that converts a current signal to a voltage signal, a single-to-differential converter that generates a differential voltage signal from the voltage signal, a feedback circuit that generates a control signal from the differential voltage signal, a bypass circuit that generates the current signal by subtracting the bypass current from the input current so that an average value of the current signal is maintained at a predetermined value, and a monitor circuit that generates a monitor current proportional to the bypass current from the control signal.

Abstract: A nonradiative communication terminal and a communication system which use visible light for communication are provided. The nonradiative communication terminal includes a visible light emission module, a visible light reception module, and a central processing unit. The visible light emission module and the visible light reception module are connected with the central processing unit. By using visible light to communicate with other visible light communication terminals, the advantages, such as nonradiation, saving frequency resources, stability and reliability in communication performance, low-cost communication, and high transmission speed are achieved.

Abstract: A hybrid communications system implements different communication technologies to communicate data and information for particular communications directions in different portions of the system. Power line communications (PLC) signaling is used to deliver data and information from a gateway device to a light access point. Visible light communications (VLC) signaling is used to communicate data and information from the light access point to a user equipment (UE) device. Wireless radio signaling, wireless infrared (IR) signaling, or a combination of wireless IR signaling and PLC signaling is used to communicate data/information from the UE device to the gateway device. To efficiently control the VLC communications channel between the light access point and UE device, the UE device measures the VLC channel, e.g., calculating SNRs on a per VLC tone basis, and communicating VLC channel quality feedback information to the gateway device, which is forwarded to the light access point.

Abstract: An OBI manager provides the reduction/elimination of optical beat interference (OBI). As will be described in more detail below, the OBI manager identifies OBI partners through an identification process performed via an RFoG network. An OBI partner may be two optical networking units (ONUs) that may interfere with one another when transmitting in the same time slot. Once the OBI partners are identified, the OBI manager may perform a mitigation process to mitigate possible OBI. For example, the OBI manager may organize the OBI partners to reduce OBI, such as by guaranteeing no OBI partners transmit at the same time.

Abstract: An optical transmitting unit comprises an integrated optical transmitter module including an LD, a TEC configured to heat or cool the LD, a thermal sensor configured to sense a temperature of the LD, and a package configured to house the LD, the thermal sensor, and the TEC, an MCU, and a temperature detection circuit configured to detect a temperature outside the package. The thermal sensor is thermally coupled with the TEC and is also thermally coupled with the outside of the package, and the MCU defines data output from the temperature detection circuit as an internal temperature when the LD is being energized, and estimates the data of internal temperature on the basis of the temperature detected with the thermal sensor and the data when the LD is not being energized.

Abstract: One embodiment provides an apparatus for coupling between a trunk passive optical network (PON) and a leaf PON. The apparatus includes a trunk-side optical transceiver coupled to the trunk PON, a leaf-side optical transceiver coupled to the leaf PON, and an integrated circuit chip that includes an optical network unit (ONU) media access control (MAC) module, an optical line terminal (OLT) MAC module, and an on-chip memory.

Abstract: The circuit monitors operation of an optoelectronic transceiver that includes a laser transmitter and a photodiode receiver. The circuit includes analog to digital conversion circuitry configured to convert a first analog signal corresponding to a first operating condition of said optoelectronic transceiver into a first digital value, and convert a second analog signal corresponding to a second operating condition of said optoelectronic transceiver into a second digital value corresponding to a second operating condition. The circuit also includes a memory configured to store the first digital value in a first memory location that is mapped to a predefined and unique first address and to store the second digital value in a second memory location that is mapped to a predefined and unique second address.

Abstract: A Universal Serial Bus (USB) key may include an optical transceiver having a USB interface for engagement to an electronic device such as a laptop computer or other USB-configured device. The USB key may include a converter or buffering, isolation, modulation or amplification circuitry. The USB key sends and receives data signals which may be carried upon an optical transmission as generated by an LED light source which in turn is in communication with a host device such as a network processor. The USB key may also include operational amplifiers (op-amps) and transistor amplifiers.

Abstract: A device receives a modulation format and a baud rate for transmission of an optical signal, and generates optical signals based on the modulation format and the baud rate. The device generates quadrature-delay-interferometer signals based on the optical signal, the modulation format, and the baud rate, and generates a particular optical signal with a particular wavelength for the modulation format and the baud rate. The device determines whether a point of the quadrature-delay-interferometer signals is associated with the particular wavelength of the particular optical signal, and sets or adjusts the particular wavelength of the particular optical signal for the modulation format and the baud rate based on whether a point of the quadrature-delay-interferometer signals is associated with the particular wavelength of the particular optical signal.

Abstract: A method of controlling a multiple sub-carrier optical channel of an optical communications system. The multiple sub-carrier optical channel includes at least two sub-carriers modulated with respective sub-channel data streams within a spectral range allocated to a single optical channel of the optical communications system. A transmitter modem of the optical communications system applies a respective dither signal to each sub-carrier. A receiver modem of the optical communications system detects a respective quality metric of each sub-carrier. A respective optimum power level of each sub-carrier is estimated based on the applied dither signals and the detected quality metrics. A respective power level of each sub-carrier is then adjusted in accordance with the estimated respective optimum power level of each sub-carrier.

Abstract: Spectrum control systems and methods are implemented to minimize power spectral density (PSD) offsets by adjusting gain of optical amplifiers in an optical section. The optical section is a logical boundary from one optical signal access point to a next adjacent optical signal access point. The systems and methods include estimating PSD offset from a given target for a peak channel at each span in the optical section, wherein the estimated PSD offset is divided at each span into two components including a self-introduced offset and an uncompensated offset from upstream; generating, for each span, a separate controller response for the self-introduced offset and the uncompensated offset from upstream; and controlling the gain of the optical amplifiers based on the separate controller response for the self-introduced offset and the uncompensated offset from upstream, for each span.

Abstract: Disclosed are a quantum key distribution terminal and system. An optical transceiving device and an electronics media board in a quantum key distribution system are organically integrated into a whole through an electronics back panel. A quantum key distribution terminal with a compact structure and a high integration level is provided, so that uniform testing, maintenance and management for various components in the quantum key distribution system can be realized, thereby realizing the integration and terminalization of the key distribution system. The same quantum key distribution terminal can also be used to conduct flexible networking, thereby setting up a quantum key distribution system on a point to point, local area network or metropolitan area network scale.

Abstract: A main controller controls carry in operations and carry out operations of articles to or from an article storage rack using article transport devices by causing a control command to be transmitted from a first optical communication device that is associated with each article transport device to a second optical communication device provided to each article transport device. The main controller is configured to perform a temporally-divided light-emission control in which a plurality of the first optical communication devices are caused to emit light in a temporally divided manner such that there is only one first optical communication device that emits light in any one time period among the first optical communication devices that are located close to one another in the vertical direction.

Abstract: The disclosure relates to a grid-controlled X-ray source, a space X-ray communication system and a space X-ray communication method.

Abstract: Preventing optical beat interference includes dynamically managing an adjustable optical transmitter wavelength of each of a plurality of customer premises equipment, wherein each of the plurality of customer premises equipment is in bidirectional communication with a customer premises equipment controller. A bidirectional communication system includes a customer premises equipment controller; and a plurality of customer premises equipment coupled to the customer premises equipment controller, each of the plurality of customer premises equipment having an adjustable optical transmitter wavelength, wherein each of the plurality of customer premises equipment is in bidirectional communication with the customer premises equipment controller to prevent optical beat interference by dynamically managing the adjustable optical transmitter wavelength of each of the plurality of customer premises equipment.

Abstract: A method for determining a performance of a MIMO communication is described comprising determining an estimate for the performance of the communication when using a first detection method, determining a measure of the orthogonality of a communication channel used in the communication and weighting the estimate for the performance of the communication when using the first detection method based on the orthogonality of the communication channel to generate an estimate for the performance of the communication when using a second detection method.

Abstract: An OFDM communication transceiver, which is configured to test its connection with an antenna circuit unit, has a receiver chain and an emitting chain. The receiver chain includes a time-to-frequency transform unit and the emitting chain includes a frequency-to-time transform unit. The transceiver further includes means for disconnecting the receiver chain to the antenna circuit unit, means for providing a stimulus as input to the emitting chain, means for reintroducing the signal at the output of the emitting chain as an input of the receiving chain, means for determining a circuit resonance frequency, Fr, and a quality factor, Q, of a transfer function computed from the output of the time-to-frequency transform unit, and means for deciding about the connection of said antenna circuit unit according to the resonance frequency and the quality factor.

Abstract: A system for analyzing a probe card comprises a signal generator adapted to generate a radio frequency test signal. a connector for inputting into the probe card the radio frequency test signal, and a detector assembly. The detector assembly comprises an RF chuck for receiving a radio frequency signal from the probe card, and a sensor configured to receive the radio frequency signal from the RF chuck. The sensor is configured to measure a magnitude of the radio frequency signal and to output a measurement signal that represents only the magnitude of the radio frequency signal. The RF chuck and the sensor are mechanically coupled.

Abstract: Systems and method for improving operation of a radio frequency system are provided. One embodiment provides a radio frequency system that includes an amplifier device with a first data path and a second data path. Additionally, the radio frequency system includes a controller that instructs the radio frequency system to transmit a calibration signal, which includes a first portion that excites the first data path and a second portion that excites the second data path; determines time skew between the first and second data paths based at least in part on phase shift between a first sample of a feedback signal and the first portion, phase shift between a second sample of the feedback signal and the second portion, or both; and instructs the radio frequency system to adjust delay applied on the first data path, the second data path, or both based at least on the time skew.

Abstract: A measuring device for measuring a response of a device under test to a carrier aggregation signal is provided. The measuring device comprises a signal generator configured to generate the carrier aggregation signal, which comprises a first carrier signal and/or a second carrier signal. The measuring device comprises a control unit configured to control the signal generator to user-selectably, individually and dynamically, activate and deactivate the carrier signals within the carrier aggregation signal.

Abstract: A station assisted interference measurement scheme is described containing a system and devices that facilitate the measurement of interference levels or path loss values between nearby potentially interfering transmitting transceivers and candidate victim receivers. Such interference levels or path loss values are used to assist intelligent assignment of communication channels in an authorized shared access system (ASAS). Using control signals from a controller of the ASAS, suspected interfering devices transmit specialized signals on specific channels at specific times that may have a waveform and/or bit format different from typically used data communication signals. A candidate victim receiver may receive one or more of the specialized signals and measure a signal parameter of the received specialized signal.