The present invention discloses a processing device for processing a radio signal, comprising a plurality of receivers designed to receive the radio signal in a predetermined frequency range and to output each signal as a received signal, comprising a detection apparatus designed to detect, for each received signal, a number of sources in the corresponding radio signal, comprising a selection apparatus designed, if there is more than one source in at least one of the received signals, to select one of the receivers on the basis of the information on the number of sources in the individual received signals and to forward the received signal of said selected receiver. The present invention also discloses a corresponding method.

An electronic device is provided. The electronic device includes a plurality of antennas, a radio frequency (RF) circuit configured to electrically connect with the plurality of antennas, and a processor. The plurality of antennas include a first main antenna, a first sub-antenna, a second main antenna, and a second sub-antenna. The processor controls the RF circuit to operate in a first mode of receiving a signal using the first main antenna and the first sub-antenna. The processor controls the RF circuit to operate in a second mode different from the first mode to receive the signal based on a signal state.

A communication device, method, and computer program product provide configuring, by a controller, a switching matrix of a radio frequency (RF) frontend of the communication device to a receive antenna tuning mode. The receive antenna tuning mode communicatively couples a transmitter to a first receive antenna of one or more receive antennas. A reference signal is transmitted using the first receive antenna at a selected transmit power level setting of the transmitter. A feedback receiver measures magnitude and phase values of both a forward coupled transmission signal and a reverse coupled reflection signal of the reference signal. An impedance value of the first receive antenna is determined based on the measured magnitude and phase values and the reference signal transmitted at the selected transmit power level setting. The first receive antenna is tuned by an antenna tuning module using the impedance value.

Examples disclosed herein relate to a radar system for object identification. The radar system transmitting an azimuth fan beam and incrementing elevation of the beam. The radar system may include a transmit antenna and a receive antenna, each having a plurality of antenna elements arranged in rows and columns. The radar system may include a transceiver coupled to the transmit antenna and the receive antenna, the transceiver configured to control transmit beams having an azimuth fan beam, or an elevation fan beam. The radar system may include a processing unit. In various embodiments, the processing unit may include a digital processing unit; a range Doppler mapping module; and an azimuth detection module coupled to the transceiver. The azimuth detection module may be configured to process received signals and identify an azimuth angle of arrival by correlating signals received at antenna elements in rows of the receive antenna.

Techniques are described for wireless communication at a wireless communication device. A determination may be made regarding the number of receive chains, of a plurality of receive chains, to enable for a channel. Power to the receive chains may be regulated based on the determined number of enabled receive chains. The determination may be based on a transmission scheduling rate for the wireless communication device and a rank for the channel. In some examples, the determination may further be based on a channel quality of the channel and/or a type of traffic scheduled for the channel.

A wireless communication device may receive with one of N antennas a signal processing message indicating a number up to N signals to process. Each of the N antennas may used to receive a communication. The indicated number of up to N signals may be processed and data from the indicated number of up to N signals recovered.

The present disclosure relates to an antenna structure. The antenna structure includes a plurality of receiver paths that are ranked based on a preset manner to obtain a ranking order of each of the plurality of receiver paths; a plurality of antennas; and a switch disposed between the plurality of antennas and the plurality of receiver paths, wherein the switch is configured to change a connection relationship between the plurality of antennas and the plurality of receiver paths based on a signal strength of the plurality of antennas and the ranking order of the plurality of the receiver paths.

Disclosed herein are methods for amplifying radio-frequency signals. Methods include using pre- and post-amplifier bandpass filters to provide opposite phase shifts and to reduce out-of-band noise produced in the filtering process. Methods also include reducing the gain of amplifiers in a downstream module in response to increasing the gain of amplifiers in the receiver module. This can be done to improve linearity in the downstream module.

A method for X2 interface communication is disclosed, comprising: at an X2 gateway for communicating with, and coupled to, a first and a second radio access network (RAN), receiving messages from the first RAN according to a first X2 protocol and mapping the received messages to a second X2 protocol for transmission to the second RAN; maintaining state of one of the first RAN or the second RAN at the X2 gateway; executing executable code received at an interpreter at the X2 gateway as part of the received messages; altering the maintained state based on the executed executable code; and receiving and decoding an initial X2 message from the first RAN; identifying specific strings in the initial X2 message; matching the identified specific strings in a database of stored scripts; and performing a transformation on the initial X2 message, the transformation being retrieved from the database for stored scripts, the stored scripts being transformations.

The disclosed systems, structures, and methods are directed to a multiple-input multiple-output (MIMO) receiver. The MIMO receiver includes at least two receiver antenna elements to receive radiated MIMO signal beams containing superposed order modes and to generate antenna element output signals based on the received MIMO signal beams. The receiver antenna elements are spatially separated by a distance. A variable ratio combining unit operates to switch between the antenna output signals based on a high-rate periodic waveform that emulates unidirectional movement by the antenna elements to produce a pseudo-Doppler frequency shift. The variable ratio combining unit further modulates the antenna output signals based on the periodic waveform to impart a fractional pseudo-Doppler shift to each MIMO mode and combines the modulated antenna element output signals in accordance with the fractional pseudo-Doppler shift to facilitate separation of the MIMO modes.