一篇关于Cooperative Diversity文章

sarah

【文件名】:06822@52RD_interaction of relaying and multi-hop routing.rar
【格　式】:rar
【大　小】:90K
【简　介】:Abstract—In this paper, we first develop the system model for a
wireless ad hoc network employing cooperative diversity. A simple fading relay channel is considered where the relay terminals apply the amplify-and-forward protocol. An equivalent multiple input multiple-output (MIMO) channel with multiple users is developed.Based on this model, basic rate matrix theory is applied to study the average rate regions under varyious transmission strategies.In particular whether relaying is beneficial is studied for cases with single hop and multi-hop routing where spatial reuse may be employed. The results indicate that cooperative diversity can provide substantial gains for cases with single hop routing.However, if optimum multi-hop routing is employed, cooperative diversity gains are small.small number of nodes in [4]. However the authors do not consider transmission scenarios with cooperative diversity. Since cooperative diversity techniques can be used to combat multipath fading, it is meaningful for us to discuss wireless ad hoc
networks with relay nodes, which is one kind of cooperative diversity technique. Basic rate matrices are the most important concept for finding the capacity region using the methodology presented in [4]. The approach in [4] involves enumerating all the possible basic rate matrices. For a transmission protocol with relay nodes this becomes more difficult since the capacity
【目　录】:
I. INTRODUCTION
II. SYSTEM MODEL
III. RATE MATRICES AND AVERAGE RATE REGION
IV. SIMULATION RESULTS
V. CONCLUSION