A phased array may include a clock stage configured to generate shifted clock signals. Each shifted clock signal may include a different phase. The phased array may also include a beamforming stage configured to generate a beamformed signal that includes a beam formed in a direction based on summed signals. In addition, the phased array may include slices. Each slice may include a filter stage and a feedback stage. The filter stage may be configured to generate a corresponding summed signal by filtering a portion of blocker and noise interference in a corresponding receive signal based on blocking signals and the shifted clock signals. The feedback stage may be configured to generate the blocking signals based on the shifted clock signals and the corresponding summed signal. The blocking signals may be representative of the blocker and noise interference in the corresponding receive signal.

An example method for estimating the angle-of-arrival (AoA) and other parameters of radio frequency (RF) signals that are received by an antenna array comprises: receiving a plurality of radio frequency (RF) signal power measurements by a plurality of antenna elements at a plurality of RF channels; computing, by applying a machine learning model to the plurality of RF signal power measurements, an estimated RF signal parameter value; and outputting the RF signal parameter value.

Methods disclosed herein may include configuring a plurality of transceiver modules in an antenna array with assigned receive signal weighting factors, the transceiver modules interconnected with high-speed data communication buses, and each transceiver module positioned adjacent to a respective antenna element in the antenna array; configuring the plurality of transceiver modules into inter-communicating module groups by enabling the associated high-speed data communication buses; receiving a plurality of wireless data signals with the plurality of transceiver modules and responsively generating a corresponding plurality of receive baseband data signals; generating a plurality of received beamformed signals by combining subsets of the receive baseband signals within each module group using the assigned receive signal weighting factors by transmitting the receive baseband signals between the transceiver modules within the module group; and demodulating the received beamformed signals.

A wireless communication system can include an antenna and an equalization system. The antenna can be configured to wirelessly receive a data signal from a user equipment (UE). The equalization system can be configured to compensate for distortion incurred by the data signal during propagation. The equalization system can include a set of multiplier circuits. Each multiplier circuit can include a first input, a second input, a multiplier device, and a management circuit. The first input can receive a first input signal that corresponds to the data signal. The second input can receive a second input signal that corresponds to a weighting value assigned to a channel associated with the antenna. The multiplier device can be enabled or disabled. When enabled, the multiplier device can be configured to perform a multiplication operation on the first input signal and the second input signal. When disabled, the multiplier circuit may not perform the multiplication operation. The management circuit can be configured to selectively disable or enable the multiplier device based on the first input signal and/or the second input signal, thereby reducing an effective number of multiplications and offering power savings.

A receiving circuit (100) includes: a channel estimation unit (20) configured to estimate a channel response vector based on a reception signal received via a plurality of antennas (10); a covariance matrix estimation unit (30) configured to estimate a covariance matrix based on the reception signal and the channel response vector; a covariance matrix correction unit (40) configured to correct the covariance matrix by adding, to the covariance matrix, an offset value with a value in components including off-diagonal elements of the matrix; and a weight multiplication unit (50) configured to estimate a transmission signal by multiplying a weight based on the channel response vector and the corrected covariance matrix by the reception signal.

A wireless receiver wireless receiver unit (200) having a plurality of antennas comprises a spatial phase corrector circuit (234) connected to a first and second receiver (220, 222) and comprises: a computation circuit (330) configured to generate a spatial-covariance matrix, SCM, of a received first and second AM signal; a signal decomposition circuit (334) configured to generate an Eigen-value decomposition, EVD, (336) of the SCM; and a processor (340) configured to analyse the EVD of the SCM of the received first and second AM signal and select and output a principal Eigen-vector that is representative of at least a first weight (350) and a second weight (352). A combiner (240) is configured to apply the first weight (350) to the first AM signal received and apply the second weight (352) to the second AM signal received and coherently combine and output (250) the received weight-applied first and second AM signal.

A method and apparatus are provided in which a set of reference signals is received (2102), and a set of channel signatures for a multiple antenna communication channel is estimated (2104). Channel state information including a set of quality metrics is calculated (2106). In response to the set of quality metrics satisfying a criterion, the baseline receiver for the multiple antenna communication channel is selected (2108). In response to the set of quality metrics not satisfying the criterion, the alternative receiver for the multiple antenna communication channel is selected (2110). The selectable alternative receiver for the multiple antenna communication channel at the user equipment is based on a set of integer linear combinations, where each integer linear combination is based on at least a pair of channel signatures from the estimated set of channel signatures (2112).

In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE or a component thereof. The apparatus may be configured to receive a first downlink reference signal associated with a first TRP. The apparatus may be further configured to receive a second downlink reference signal associated with a second TRP. The apparatus may be further configured to transmit, to the first TRP and the second TRP, at least one sounding reference signal that is associated with both the first downlink reference signal and the second downlink reference signal.

An array of antennae includes a monobit transmitter to insert dither into a transmit signal to form a dithered transmit signal. Monobit receivers process received signals that are combined with the dithered transmit signal to form composite received signals. Digital down converters process the composite received signals to form down converted received signals. A beamformer circuit processes the down converted received signals to form recovered signals.

A beamforming circuit for receiving and/or transmitting one or more (typically a plurality of) beams. The beamforming circuit includes: an antenna I/O module having antenna ports; a data bus connection for connecting to a data bus for communication of data streams of one or more beams to be produced (received or transmitted); a beamforming module including a plurality of beam-forming channels connectable in between the data bus connection and the antenna ports for processing signals communicated between them to introduce controllable shifts (e.g. time-delays and/or phase-shifts) in order to beamform the processed signals, being received and/or transmitted. Whereby the beamforming circuit includes a cascade I/O module enabling to connect one or more additional beam-forming circuits to the beamforming circuit, in a “vertical” cascade, to thereby enable forming of one or more additional beams by the beamforming modules of the one or more additional beamforming circuits. The cascade I/O module includes a plurality of cascade ports respectively connected to the plurality of antenna ports via a plurality of corresponding bypass channels. Each antenna port is connectable, in parallel, to at least one respective bypass channel and to one or more of the beamforming channels of the beamforming circuit, via a signal splitter/combiner. In transmission configuration/mode, the signal splitter/combiner is operable for combining signals from the bypass channel and the one or more beamforming channels, which are associated with the respective antenna port; and in reception configuration/mode, the signal splitter/combiner is configured and operable for splitting the signals of the respective antenna port to form duplicates thereof at the respective bypass channel and the one or more beamforming channels associated with the respective antenna port.