摘要
协同分集是一种空间分集形式,无线网络中的终端通过分布式传输和信号处理技术共享天线和其它资源,构成一种"虚拟阵列"。协同分集能提高网络吞吐量、降低发射功率和抑制信道衰落效应。分析了多中继并行协同分集方式的性能,分别对前向放大、前向检测和编码协同技术开展研究。仿真结果表明,随着中继节点的增加,分集增益越高,选择方式更灵活,系统传输性能越好。
The cooperative diversity is a form of space diversity,and the terminals share their antennas and other resources to create a "virtual array" through distributed transmission and signal processing in wireless networks.The cooperative diversity can increase network throughput,reduce transmitting power and suppress channel fading effects.This paper analyses the performance of multi-relay parallel scenario with AF,DF and CC,respectively.The simulation results show that with more relays,the diversity gain is hi...
出处
《上海应用技术学院学报（自然科学版）》
2008年第4期266-270,共5页
Journal of Shanghai Institute of Technology: Natural Science
基金
国家自然科学基金(60872038)
重庆市自然科学基金(CSTC
2007BB2162)
关键词
协同分集
前向放大
前向检测
编码协同
cooperative diversity
amplify-and-forward
detect-and-forward
coded cooperation
