Abstract: The present invention discloses a geographic information-based simulation test system for medium-high frequency communication channels, comprising a human-machine interface module, a geographic information processor, a ground wave signal simulation processing module, a sky wave signal simulation processing module, a digital map, an ambient noise generation module, a time generator, and an simulation signal synthesizer. A ground wave transmission signal and a sky wave transmission signal are respectively simulated according to a ground wave transmission path and a sky wave transmission path; and finally, the ground wave simulation signal, the sky wave simulation signal, and the ambient noise signal are synthesized and sent to a medium-high frequency receiver.

Abstract: Embodiments of the present disclosure relate to cellular technology applications of beamforming performed in the digital domain. In one aspect, an RF system for performing digital beamforming on a per-carrier basis is disclosed, where different phase and/or amplitude adjustments are applied to signals of different frequency ranges (i.e., to different carrier signals). In another aspect, an RF system for performing digital beamforming on a per-antenna basis is disclosed, where different phase and/or amplitude adjustments are applied to signals transmitted from or received by different antennas. In some embodiments, an RF system may be configured to implement both digital beamforming on a per-carrier basis and digital beamforming on a per-antenna basis. The RF systems disclosed herein allow implementing programmable beamforming in the digital domain in a manner that is significantly less complex than conventional implementations.

Abstract: According to one embodiment, a signal quality monitoring apparatus includes a signal processor, a comparator and a determiner. The processor obtains output signals from a first transmitter and a second transmitter which are mutually redundant and respectively reproduce digital broadcast signals based on a common origin signal, and generates a first signal based on the output signal from the first transmitter and a second signal based on the output signal from the second transmitter. The comparator compares the first signal and the second signal. The determiner determines a quality of the digital broadcast signal based on a result of the comparison.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify one or more candidate beams available for communication between the UE and a BS to replace another beam that is configured for communicating between the UE and the BS. The UE may transmit, based at least in part on identifying the one or more candidate beams, a communication that includes a new beam information (NBI) field and/or contents of the NBI field. Numerous other aspects are provided.

Abstract: A communication circuitry device for correcting a phase imbalance, the communication circuitry device comprising one or more processors configured to estimate a non-linear component of a reference signal based on a measurement of a tone at a first harmonic of a plurality of harmonics of the reference signal, estimate an in-phase component of the reference signal based on subtracting the non-linear component from a measurement of a tone at a second harmonic of the plurality of harmonics of the reference signal, and generate a calibration signal based on the estimation of the in-phase component.

Abstract: Technologies directed to improving signal quality in received wireless signals in the phase domain of shift keying demodulation are described. One method receives digital data, the digital data including a systematic error as a linear function of residual carrier frequency offset and phase noise (PN). The method extracts first phase data from the digital data, determines, in a phase domain, an estimate of the systematic error using historical phase error data of additional digital data received prior to the digital data, and generate second phase data by subtracting the estimate from the first phase data. The method determines a set of symbols from the second phase data and generates a bit sequence of a data packet from the set of symbols.

Abstract: Presently disclosed are systems and methods for beamforming training in WLANs. In various embodiments, there are unified MIMO beamforming training procedure, which includes a training period in which an initiator transmits multiple unified training frames for performing a transmit-beamforming training of the initiator and a receive-beamforming training of one or more responders; a feedback period in which each responder replies with a beamforming-feedback response; and an acknowledgement period during which the initiator transmits respective acknowledgement frames to the one or more responders from which responses were received. Rules for restricted random access in various slots of the feedback period may be implemented, to address response contention between multiple qualifying responders.

Abstract: A receiver for detecting and recovering payload data from a received signal is provided. The receiver includes a detector, a frequency synchronizer, and a demodulator. The receiver is configured to detect the received signal. The received signal includes the payload data and signalling data for use in detecting and recovering the payload data. The frequency synchronizer is configured to process the received signal so as to compensate for a frequency offset in the received signal. The demodulator is configured to detect the one or more first symbols and the one or more second symbols, to recover the signalling data from the one or more first symbols, and to use the signalling data to recover the payload data from the one or more second symbols. The sequence is a signature sequence associated with a transmitter of the received signal.

Abstract: Disclosed are a communication scheme and a system thereof for converging IoT technology and a 5G communication system for supporting a high data transmission rate beyond that of a 4G system. The disclosure can be applied to intelligent services (for example, services related to a smart home, smart building, smart city, smart car, connected car, health care, digital education, retail business, security, and safety) based on the 5G communication technology and the IoT-related technology. A decoding method includes: performing decoding through an inner code; detecting an error through an outer code; determining a re-encoding method; and performing re-encoding. A method for processing a signal includes decoding a first layer signal to determine first LDPC information bits, encoding the first LDPC information bits and a first parity bits to determine second parity bits; identifying a part of the first LDPC information bits, and decoding a second layer signal.

Abstract: Clock and data recovery for high-speed serial data protocols is enabled using circuitry that combines the functionality of a decision feedback equalizer with that of a phase detector.

Abstract: Provided are a method and apparatus for transmitting or receiving signals in a wireless communication system. An electronic device in the wireless communication system includes: a transceiver; and at least one processor, wherein the transceiver comprises an antenna module and a metasurface module, wherein the antenna module comprises a plurality of antennas, wherein the at least one processor is configured to generate first beams for the plurality of antennas, transmit the first beams to the metasurface module from the plurality of antennas, generate second beams based on the first beams through the metasurface module, and transmit the second beams to another electronic device, and wherein the metasurface module is arranged to receive the first beams generated for the plurality of antennas.

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). An operation method of a base station in a wireless communication system may include obtaining indicators corresponding to a precoder, precoding a signal using the precoder, and transmitting the precoded signal to the terminal. The precoder may include elements defined by a phase value, an exponential value, or a sign, determined by combining variables based on the indicators. The precoder may be determined by searching a first memory storing coefficients for combining the variables corresponding to an antenna port and a layer, a second memory storing a size of a sine wave and cosine wave corresponding to the phase value, or a third memory storing a sign corresponding to a combination of an antenna port or a layer.

Abstract: The present disclosure relates to a device (140) adapted for aligning a first directive antenna (101) in an alignment direction D1 towards a second antenna (102). The device is adapted to acquire measurement data regarding: ?—a first signal power (301) received from the second antenna (102) using a first effective antenna aperture (202) when the first directive antenna (101) is moved along an angular span (306) passing a desired alignment angle (307) along a certain direction (111, 112); and ?—a second signal power (302) received from the second antenna (102) using a second effective antenna aperture (203) when the first directive antenna (101) is moved along an angular span (306) passing a desired alignment angle (307) along a certain direction, the second effective antenna aperture (203) being smaller than the first effective antenna aperture (202).

Abstract: An apparatus includes a phased array antenna panel and one or more beam former circuits mounted on the phased array antenna panel. The phased array antenna panel generally comprises a plurality of antenna elements. The plurality of antenna elements are generally arranged in one or more groups. Each beam former circuit may be coupled to a respective group of the antenna elements. Each beam former circuit generally comprises a plurality of transceiver channels. Each transceiver channel generally comprises a power amplifier circuit configured, when operating in a transmit mode, to drive a respective one of the antenna elements. The power amplifier circuit generally comprises separate bias and voltage supply inputs providing additional power control.

Abstract: Described is a cognitive signal processor that is implemented in a field programmable gate array (FPGA). During operation, the FGPA receives a continuous noisy signal. The continuous noisy signal is a time-series of data points from a mixture signal of waveforms having both noise and a desired waveform signal. The continuous noisy signal is linearly mapped to reservoir states of a dynamical reservoir. A high-dimensional state-space representation of the continuous noisy signal is generated by digitally combining the continuous noisy signal with the reservoir states. Notably, the continuous noisy signal is approximated over a time interval based on a linear basis function. One or more delay-embedded state signals are then generated based on the reservoir states. The continuous noisy signal is then denoised by removing the noise from the desired waveform signal, resulting in a denoised waveform signal.

Abstract: The present invention relates to a method and an apparatus for displaying and guiding an optimum beam display. The present invention can be applied to a 5G communication and Internet of Things (IoT) related technology-based intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail businesses, security and safety related services, etc.).

Abstract: Embodiments of systems and methods relating to a first radio device (UE) and a second radio device (base station) are disclosed. In some embodiments, a method implemented in the second radio device for adaptation of transmission over a radio channel is described. The method comprises determining a condition of the radio channel in which the radio channel exhibits an invariance of statistics and transmitting a data symbol to the first radio device via the radio channel. The method further comprises receiving a quality report of the radio channel from the first radio device based on the data symbol when a statistical characterization of the radio channel exceeds a predetermined threshold. The transmission over the radio channel is adapted by the second radio device based on the received quality report.

Abstract: A power outlet for controlling power to an external device and transmitting data to the external device, the power outlet including: a housing containing at least one alternating-current power input connection; a power output connection; a data connector; a sensor module; a wireless communication module, including an antenna; a processing unit configured to receive data and control an electrically connected device through the power output connection and/or data connector based on the received data.

Abstract: A beam pattern design method is adapted to an antenna array system. An antenna array of the antenna array system includes a plurality of antenna devices. The beam pattern design method includes the following procedures. A plurality of first virtual beamforming vectors having a first resolution are set. Each of the plurality of first virtual beamforming vectors corresponds to all the antenna devices in the antenna array. Corresponding weights are respectively assigned to phases of the plurality of first virtual beamforming vectors to generate a plurality of correspondingly weighted first virtual beamforming vectors. The plurality of correspondingly weighted first virtual beamforming vectors are linearly combined to synthesize a provisional vector having a second resolution. The phase of each element in the provisional vector is extracted, and a fixed amplitude is provided to the extracted phase of each element in the provisional vector to generate a final beamforming vector.

Abstract: A frequency manager in a multi-band wireless microphone system provides the synchronization of fixed RF devices (for example, transceivers) operating in distant parts (for example, two or more frequency bands) of the frequency spectrum. Each transceiver may be paired with a wireless microphone and provides synchronization with the paired wireless microphone. Antenna signals are separated or combined into a plurality of frequency bands using a multi-band filter. Band-specific low noise amplifiers and power amplifiers may be utilized for each frequency band so amplifier performance can be optimized. Prior to distribution by a splitter, the plurality of frequency bands is combined or separated using a second multi-band filter. Transceivers that are connected to the frequency manager may then independently operate in one band, different frequency bands or a combination of bands.