A collaborative communication method in multi-user wireless network based on time space diversity encoding and decoding

Abstract

The invention discloses a collaborative communication method in a multi-user wireless network, which is based on space diversity encoding and decoding and belongs to the technical field of wireless communication in the multi-user wireless network, and is characterized in that in a collaborative communication system that consists of a mobile terminal and a base station having the ability of multi-user connecting and managing, information sent and received between a terminal and a partner terminal are sequences punctured by an encoding sequence owned by each terminal, and the terminal implements matching and decoding according to a code word of the partner terminal after receiving the encoded sequence of the partner terminal, if succeeds, the terminal re-encodes and sends a check bit with the puncturing of the partner terminal removed, otherwise the terminal sends a check bit with the puncturing owned by itself removed and switches into a non-collaborative communication mode, wherein, the invention comprises collaborative encoding and decoding between the terminals and between the base stations simultaneously. The invention leads the collaborative communication system of the terminals to acquire encoding gain and diversity gain with a plurality of antennas, and under the condition that the antenna number of the base station is not increased; the invention acquires greater diversity gain of the antenna array and increases communication system capacity from two aspects.

Description

technical field [0001] The invention belongs to the field of wireless communication, in particular to a cooperative communication method based on space-time diversity encoding and decoding in a multi-user wireless network under a fading channel. Background technique [0002] With the rapid growth of high-speed wireless service requirements, it is necessary to increase the throughput rate per unit bandwidth to accommodate more users to transmit higher data rates, while ensuring the quality of service for multiple users. In point-to-point communication, the capacity between the transmitter and receiver is limited by the available bandwidth, the channel environment of the transmission, and the noise level of the receiver. In a multi-user system, the capacity of the network is also constrained by factors such as spectrum resource allocation, channel environment, and noise interference on subcarriers. At present, various access protocols, such as time division multiple access, f...

AI Technical Summary

Problems solved by technology

However, in practical applications, the size, hardware complexity, power consumption and cost of wireless terminals (such as most handheld devices and wireless sensor network nodes) are strictly limited so that only one antenna can be used, which hinders large Antenna arrays are used, thus affecting the diversity gain of multiple antennas

[0007] At the same time, for base stations, increasing the number of antennas and the corresponding processing complexity may outweigh the benefits of increased capacity. Further, in order to obtain the benefits of additional capacity, many or all base stations in a wireless network need Adding additional antennas, cost and physical constraints also limit the use of large antenna arrays in base stations

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