Huawei Technologies Co., Limited

Junping Zhang

Sheng Liu

Qian Wang

Wei Wang

Min Yan

Qian Zhang

Chirn Chye Boon

Shimon Shilo

Doron Ezri

Chenchen Liu

Dong Liang

Jingjing Huang

Bingfu Wang

Jing Li

Xiang Yi

Xu Li

Xueli Kong

Kaituo Yang

Dror Regev

Gengen Hu

Zhice Yang

Chongyang Zeng

Haibo Lin

This application provides a signal transmission method and apparatus. The method includes: obtaining, by a transmitter side, a first signal with N points; performing signal separation on the first signal with N points, to obtain two groups of signals (for example, a second signal with N points and a third signal with N points); combining the two groups of signals obtained through separation, to obtain a to-be-sent signal with 3N/2 points; and sending the signal with 3N/2 points to a receiver side, to enable the receiver to restore the first signal with N points from the received signal with 3N/2 points.

Signal transmission method and apparatus

A signal receiving circuit amplifies a radio frequency signal by using a first radio frequency amplifier, outputs a first amplified signal in a same phase, amplifies the radio frequency signal by using a second radio frequency amplifier, and outputs a second amplified signal at an inverse phase. A first mixer mixes a first local oscillator signal with the first amplified signal to obtain a first frequency mixing signal, and a second mixer mixes a second local oscillator signal with the second amplified signal to obtain a second frequency mixing signal, where a phase of the first local oscillator signal is opposite to a phase of the second local oscillator signal. After adding the first frequency mixing signal and the second frequency mixing signal, an output interface outputs the first frequency mixing signal and the second frequency mixing signal.

Signal receiving circuit, signal processing chip, communications device, and signal receiving method

The communication receiver comprises a mixer being configured to mix the communication signal with a periodic mixing signal having a mixing frequency fto obtain a mixed communication signal, wherein the mixed communication signal comprises a first frequency spectrum portion comprising the spectral region of interest being situated around a frequency f+fand a second frequency spectrum portion comprising the spectral range of interest being situated around f&#x2212;f; a first demodulator being configured to demodulate a first frequency channel of the plurality of frequency channels within the spectral range of interest of the first frequency spectrum portion on the basis of a first local oscillator frequency f; and a second demodulator being configured to demodulate a second frequency channel of the plurality of frequency channels within the spectral region of interest of the second frequency spectrum portion on the basis of a second local oscillator frequency f.

Communication receiver and method

A channel estimation apparatus and method are provided to ensure that a channel estimation value can correctly reflect a transmission channel status, so that an orthogonal frequency division multiplexing (OFDM)-based wireless system can correctly transmit an aggregate long frame according to the channel estimation value. The channel estimation apparatus determines a first channel estimation value, receives a first symbol group of a long frame according to the first channel estimation value, and determines a second channel estimation value according to the first symbol group, and if a difference between the first channel estimation value and the second channel estimation value is less than or equal to a first threshold, determines a third channel estimation value according to the first channel estimation value and the second channel estimation value.

Channel estimation apparatus and method

A full-duplex antenna includes a receive antenna, which is an omnidirectional antenna. A first transmit antenna is disposed on one side of the receive antenna and is a directional antenna. A reverse direction of a main lobe of a radiation pattern of the first transmit antenna points to the receive antenna. A second transmit antenna is disposed on the other side of the receive antenna. A distance between the second transmit antenna and the receive antenna is equal to a distance between the first transmit antenna and the receive antenna. The second transmit antenna is a directional antenna, and a reverse direction of a main lobe of a radiation pattern of the second transmit antenna points to the receive antenna.

Full-duplex antenna and mobile terminal

A method, an apparatus, and a device are provided for information transmission. In the method, the apparatus determines an initial OFDM symbol in OFDM symbols used to transmit load information. The apparatus determines, starting from the initial OFDM symbol, a phase deviation difference between two adjacent OFDM symbols according to first information to be transmitted. The apparatus performs phase deviation on at least one of the OFDM symbols according to the phase deviation difference. The apparatus then sends the OFDM symbols obtained after the phase deviation to a receiving end.

Information transmission method, apparatus, and device

Embodiments of the present application provide an aggregation frame design method and apparatus, the method includes: selecting, by a transmit end from N different hash function groups, one group that has a same sequence number as that of each receive end, mapping a MAC address of each receive end into a number X, and denoting the number X; obtaining M first sequences of each receive end, and performing a bitwise OR operation on the M first sequences to obtain an identification sequence of each receive end; obtaining N identification sequences of N receive ends, performing a bitwise OR operation on the N identification sequences to obtain a Bloom sequence, and encoding and modulating the Bloom sequence to map the Bloom sequence onto an OFDM symbol; and forming an aggregation frame by using a pilot signal, the OFDM symbol, the N identification sequences, and data of the N receive ends.

Aggregation frame design method and apparatus

The present invention relates to a method, device and system for solving channel collision, which are applied to a Long Term Evaluation Advanced (LTE-A) system. The method includes: receiving control information transmitted by a base station; transmitting uplink data to the base station according to the control information; and receiving decoding results on the uplink data from the base station, and determining the resource location of a Physical Hybrid ARQ Indicator Channel (PHICH) according to the control information, thereby determining the decoding result corresponding to a User Equipment (UE) itself. The implementation of the embodiments of the present invention can avoid the problem of collision the channel resources of the PHICH determined by the UE when the LTE-A has to be compatible with the LTE.

Method, device and system for solving channel collision

Growing community of inventors

Shenzhen, China

Junping Zhang