协作复用:在多天线中继网络中实现更高频谱效率的研究  

Cooperation Multiplexing: Research on Realizing Higher Spectrum Efficiency in Multi-antenna Relay Network

作　　者：邓国辉[1] 邵玉斌[1] 夏腾飞[1] 

机构地区：[1]昆明理工大学信息工程与自动化学院,昆明650500

出　　处：《重庆理工大学学报（自然科学）》2011年第12期94-99,105,共7页Journal of Chongqing University of Technology：Natural Science

基　　金：云南省科技厅基金资助项目(2009CA027)

摘　　要：讨论协作通信的复用增益的优势。首先,给出多天线中继网络之间传输速率和中断概率的基本权衡的新解释;然后讨论协作复用增益获得任何有限SNR的可能。在全双工的中继网络中,中继不仅能提供可靠的链路连接,还能提高更高的频谱效率。结果表明,在分集-复用权衡对任何有限的信噪比值下,复用增益能显著影响系统性能。Previous work on benefits of such techniques. cooperative communications has concentrated primarily on the diversity This paper, instead, considers the multiplexing benefits of cooperative communications. First, a new interpretation on the fundamental tradeoff between the transmission rate and outage probability in multiple-antenna relay networks is given. It follows that multiplexing gains can be obtained at any finite signal-to-noise ratio （SNR）, in full-duplex multiple-antenna relay net- works. Thus, relaying can offer not only stronger link reliability, but also higher spectral efficiency. It is shown that this power gain can significantly affect the system diversity-multiplexing tradeoff for any finite SNR value.

关 键 词：分集增益 复用增益 MIMO通信 协作通信 中继节点 功率 中断概率 SNR 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]