Huawei Technologies Co., Limited

Shanghai Taolink Technologies Corporation

Daiming Qu

Lei Chen

Jun Li

Tao Jiang

Fang Wang

Hao Jiang

Zhibing Wang

Jingshun Liu

Hui He

Disclosed in the present invention is a signal transmission method for a multi-antenna multi-user TDD communication system. Each frame of the TDD communication system includes one forward downlink frame synchronization signal, multiple downlink data time slots, and multiple uplink data time slots; the downlink frame synchronization signal is a broadcast signal, the base station sends the downlink frame synchronization signal to all terminals, and after each terminal receives the downlink frame synchronization signal, time and frequency synchronization is performed with reference to the base station to acquire the start time and end time of each uplink data time slot. The synchronization signal received power P is evaluated and compared with the synchronization signal received power range of all uplink data time slots in the frame, and all terminals falling into the synchronization signal received power range of the uplink data time slot k select the uplink data time slot k to send data.

Signal transmission method for multi-antenna multi-user time division duplex communication system

An FBMC signal transmitting method and receiving method, a transmitter, and a receiver are provided. The transmitting method includes: generating offset quadrature amplitude modulation OQAM symbols included on at least two subbands; mapping an OQAM symbol on each subband onto a respective subcarrier to obtain a frequency-domain signal, where a first frequency interval exists between adjacent subcarriers in a same subband, a second frequency interval exists between adjacent subcarriers that belong to two adjacent subbands, the second frequency interval is a sum of the first frequency interval and a guard band interval, and the guard band interval is a fractional multiple of the first frequency interval; generating an FBMC signal out of the frequency-domain signal; and transmitting the FBMC signal to a receiver.

FBMC signal transmitting method and receiving method, transmitter and receiver

Embodiments of the present invention provide a data processing method and apparatus. The method includes: selecting at least two groups of data from a to-be-processed data stream according to a preset first interval in a staggered manner; performing Fourier transform on each of the at least two groups of data to obtain at least two groups of first data; performing frequency domain filtering on the at least two groups of first data by using a prototype filter, to obtain at least two groups of second data; performing inverse Fourier transform on each of the at least two groups of second data to obtain at least two groups of third data; and adding the at least two groups of third data according to a preset second interval in a staggered manner. In the process, data obtained after transform reserves a feature of a single carrier, and has a low peak-to-average ratio.

Data processing method and apparatus

The present invention provides an FBMC transmit diversity transmission method and apparatus. The method includes: obtaining a to-be-transmitted data sequence, where the to-be-transmitted data sequence includes 2*M*N pieces of data; performing transmit diversity processing on the to-be-transmitted data sequence to obtain FBMC signals of a first antenna and a second antenna, where a precoding matrix is (I) or (II), a matrix that includes the FBMC signals of the first antenna and the second antenna is (III), a matrix that includes the to-be-transmitted data sequence is (IV), 0&#x2264;i&#x2264;M&#x2212;1, 0&#x2264;j&#x2264;N&#x2212;1, Y=WX, the 2*M*N pieces of data of the to-be-transmitted data sequence are denoted by x(k,l) and x(k,l), 0&#x2264;k&#x2264;M&#x2212;1, 0&#x2264;l&#x2264;N&#x2212;1, FBMC signals of the first antenna and the second antenna on an rsubcarrier and an ssymbol are denoted by y(r,s) and y(r,s), 0&#x2264;r&#x2264;2M&#x2212;1, and 0&#x2264;s&#x2264;N&#x2212;1; and transmitting the FBMC signals of the first antenna and the second antenna.

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Wuhan, China

Daiming Qu