Cooperative transmission method combined with higher-order domain network coding

Abstract

The invention discloses a cooperative transmission method combined with higher-order domain network coding. The method is characterized in that at the first stage of transmission, each user transmits self information and simultaneously monitors information transmitted by other users; and at the second stage of transmission, each user utilizes coding vectors to carry out linear superimpose coding on packets monitored at the first stage and the self information on a high-order domain and then transmit the coded packets and information, and a receiving end utilizes a coded matrix to form packetscorrectly received to a linear simultaneous equation on the high-order domain so as to solve original data sent by the users. In the method disclosed by the invention, the cooperative transmission technology in a multi-user cooperative transmission system is combined with the higher-order domain network coding technology, thereby providing highly reliable insurance for uplink data transmission ofmulti users and effectively improving the cooperative transmission efficiency and the overall system performance.

Description

technical field [0001] The invention belongs to the technical field of cooperative communication in the cellular mobile communication technology, and in particular relates to a cooperative transmission method combined with high-order domain network coding in the cellular mobile communication system. Background technique [0002] Cooperative communication technology utilizes the broadcast characteristics of wireless channels and the independence of each user channel, and uses geographically dispersed single-antenna wireless nodes to assist in the transmission of information to generate cooperative diversity gain, which is an effective means to combat wireless channel fading. Compared with the conventional point-to-point wireless communication mode, cooperative communication technology has higher transmission reliability. Therefore, cooperative communication technology is the core technology of future wireless mobile communication systems. How to carry out efficient and relia...

AI Technical Summary

Problems solved by technology

However, in these two cooperative transmission methods, a single cooperative transmission node can only serve a designated single user in the same cooperative transmission process, and cannot serve multiple users at the same time, so it cannot obtain high cooperative transmission efficiency

[0004] "International Conference on Communication organized by the Institute of Electrical and Electronics Engineers" (IEEE Wireless Communications and Networking Conference, 2006, pp1681-1686) mentioned a cooperative transmission method based on second-order domain network coding, which only uses two coding coefficients of 0 and 1. This makes the linear independence between the encoded data packets in the process of cooperative transmission not enough, which leads to the low solvability of the decoding equations constructed by the receiver, and fails to give full play to the advantages of cooperative transmission combined with network coding technology.

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