Huawei Technologies Co., Limited

Shenzhen Yinwang Intelligent Technologies Co., Ltd.

Mu Zhou

Yi Cao

Jinnan Liu

Ricky Lap Kei Cheung

Dapeng Lao

Cong Li

Chen Yang

Ben Wang

Minqiu Chen

Chenghao Wang

Embodiments of this application provide a communication device. The communication device includes a first splitter, a first transmit path, and a second transmit path, where the first transmit path includes a first phase shifter and a first power amplifier, and the second transmit path includes a second phase shifter and a second power amplifier; an output end of the first transmit path is coupled to a first transmit antenna, and an output end of the second transmit path is coupled to a second transmit antenna; an input end of the first transmit path and an input end of the second transmit path are separately coupled to the splitter; the first transmit path and the second transmit path are configured to transmit a beamforming signal; and the first transmit path and the second transmit path are further configured to transmit a multiple-input-multiple-output MIMO signal.

Communication device and electronic device

A radar system includes a transmitter configured to transmit a radar signal; and a receiver configured to receive an echo signal obtained after the radar signal is reflected by a target, where a transmit antenna array of the transmitter and a receive antenna array of the receiver are used to form a virtual linear array and a virtual planar array, the virtual linear array includes a uniform linear array in a first direction, the virtual planar array includes a uniform planar array, and a first spacing between two adjacent array elements in the uniform linear array is less than a second spacing between two adjacent array elements in the first direction in the uniform planar array.

Radar system and vehicle

A signal transmission method applied to a multiple-input multiple-output (MIMO) radar, the MIMO radar includes a transmitter, and the transmitter includes a plurality of transmit antennas. The signal transmission method includes sending, by the transmitter, a first burst in a first measurement frame, where the first measurement frame is used to measure a velocity of a target, and when the first burst is sent, each of the plurality of transmit antennas sends a chirp signal in a time division manner, and sending, by the transmitter, a second burst in the first measurement frame after the transmitter sends the first burst in the first measurement frame, where when the second burst is sent, a quantity of transmit antennas configured to send a chirp signal is one.

Signal transmission method and apparatus, signal processing method and apparatus, and radar system

Embodiments of this application disclose a signal processing method, a radar system, and a vehicle. The method is applied to a radar system including an array antenna. The method includes: sequentially transmitting signals according to a first transmission sequence through M transmit antennas, where the first transmission sequence is different from a sequence that is formed by arranging the M transmit antennas based on spatial locations; receiving, through N receive antennas, echo signals that are formed after a target reflects the transmitted signals, where M and N are positive integers, and M is greater than 2; and measuring a parameter of the target based on the echo signals. According to the embodiments of this application, correlation between space and a Doppler phase shift is reduced by changing a switching order of transmit antennas.

Signal processing method, radar system, and vehicle

An apparatus includes a first splitter configured to feed a first signal onto a first transmission channel and a second transmission channel, where the first splitter is located in a symmetrical position between the first transmission channel and the second transmission channel, and a vector detection component configured to, when the first splitter feeds the first signal, detect a first signal vector based on a first feedback signal from the first transmission channel, and detect a second signal vector based on a second feedback signal from the second transmission channel.

Apparatus for correcting deviation between a plurality of transmission channels and wireless communications device

An antenna apparatus, which includes an antenna array and a processor, where the processor is configured to determine a first antenna subarray from N rows and M columns of radiating elements of the antenna array, where the first antenna subarray includes X1 rows and Y1 columns of radiating elements, and X1 is greater than Y1, control a phase shift increment change of the first antenna subarray to generate a plurality of first beams, determine a first aligned beam from the first beams based on a first feedback from a receive end, determine a second antenna subarray, where the second antenna subarray includes X2 rows and Y2 columns of radiating elements, and Y2 is greater than X2, and determine a second aligned beam from the second beams based on a second feedback from the receive end.

Antenna apparatus and related device

A method includes a first port including a first measured channel, a second port including a second measured channel, a third port including a first reference channel, and a fourth port including a second reference channel, and a vector detector configured to perform detection based on a first and second feedback signal that are respectively output by the first and second reference channel to thereby obtain a first and second signal vector in response to the first port transmitting a first signal, and perform detection based on a third and fourth feedback signal that are respectively output by the first and second reference channel, to obtain a third and fourth signal vector in response to the second port transmitting the first signal. The first, second, third, and fourth signal vector are useable to calibrate a deviation between the first and the second measured channel.

Transmission channel calibration apparatus and wireless communications device

This application provides an apparatus for correcting a deviation between a plurality of transmission channels, which includes a first transmission channel and a second transmission channel. The first transmission channel and the second transmission channel are respectively connected to a first endpoint and a second endpoint of a correction coupling channel. The apparatus includes a vector detection unit, configured to: when a first signal is fed at the first endpoint and a second signal is fed at the second endpoint, respectively detect a plurality of signal vectors based on a plurality of feedback signals of the first transmission channel and the second transmission channel; and a processing unit, configured to determine a deviation correction value between the first transmission channel and the second transmission channel based on the detected signal vectors.

Apparatus and method for correcting deviation between plurality of transmission channels

An apparatus for correcting a deviation between a plurality of transmission channels includes a first transmission channel and a second transmission channel. The apparatus also includes a phase offset unit configured to set a phase offset between the first transmission channel and the second transmission channel such that a phase deviation between the first transmission channel and the second transmission channel deviates from zero, a power detection unit configured to detect signal powers of the first transmission channel and the second transmission channel under the phase offset, a processing unit configured to determine, based on the detected signal powers, a deviation correction value between the first transmission channel and the second transmission channel, where the deviation correction value includes a phase correction value, and a phase correction unit configured to set the phase correction value between the first transmission channel and the second transmission channel.

An apparatus includes a phase offset unit configured to set a phase offset between the first transmission channel and the second transmission channel such that a phase deviation between the first transmission channel and the second transmission channel deviates from zero, a power detection unit configured to detect signal powers of the first transmission channel and the second transmission channel under the phase offset, a processing unit configured to determine, based on the detected signal powers, a deviation correction value between the first transmission channel and the second transmission channel, where the deviation correction value includes a phase correction value, and a phase correction unit configured to set the phase correction value between the first transmission channel and the second transmission channel.

The present disclosure relates to apparatus for correcting a deviation between a plurality of transmission channels, which includes a first transmission channel and a second transmission channel. The first transmission channel and the second transmission channel are respectively connected to a first endpoint and a second endpoint of a correction coupling channel. One example apparatus includes a receiver and at least one processor. The receiver is configured to when a first signal is fed at the first endpoint and a second signal is fed at the second endpoint, respectively detect a plurality of signal vectors based on a plurality of feedback signals of the first transmission channel and the second transmission channel. The at least one processor is configured to determine a deviation correction value between the first transmission channel and the second transmission channel based on the detected signal vectors.

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Shanghai, China

Mu Zhou