关键词: 多源分布式协作网络, 空时网络编码, 时隙, 传输效率

Abstract: In order to solve the problem of traditional space-time coding cooperation scheme with higher power consumption and lower data transmission efficiency, this paper proposes a novel Cooperation Space-time Network Coding（CSTNC） scheme in cooperation networks with multiple sources and single relay. The CSTNC scheme takes advantage of multiple antennas to obtain receiving diversity, and designs space-time network coding at relay node. Then the relay transmits signals to destination node depending on the encoding matrix. The simulation results show the system performance in the cases of different numbers of sources and relay antennas. Meanwhile, the system performance and transmission efficiency between traditional space-time coding cooperation scheme and the proposed CSTNC scheme are analyzed. It demonstrates that the proposed CSTNC scheme is a high-efficiency wireless transmission mode which is easy to implement and has good performance.

Key words: Multi-resources Distributed Cooperative Network, space-time network code, time slot, transmission efficiency