Gaussian Two-hop Relay Channel with Linear Relaying

摘要：

In this paper, the optimization problem of the two-hop relay channel with linear relaying is discussed. The expression of the capacity for the Gaussian two-hop relay channel with linear relaying is shown, which is an optimization problem over the relaying function and the covariance matrix of the signals transmitted by the source node. We show that the solution to the optimization problem is equivalent to a “single-letter optimization problem, the solution to which has the same form as the expression of the rate achieved by time-sharing amplify and forward (TSAF). Taking a special case as example, we present that the achievable rate with TSAF and the maximal rate computed by exhaustively search are almost equal to each other at any SNR, which demonstrates the efficiency of TSAF.

关键词： linear relaying two-hop relay channel timesharing AF

作者: Zhixiang Deng Bao-Yun Wang Fei Lang Yayan Ma

作者单位: College of Telecommunications & Information Engineering, Nanjing University of Posts and Telecommuni College of Automation, Nanjing University of Posts and Telecommunications, Nanjing, China College of Telecommunications & Information Engineering, Nanjing University of Posts and Telecommuni

会议类型: 国际会议

会议名称: 2011年无线通信与信号处理国际会议(WCSP 2011)

会议地点: 南京

会议语种:英文

页码: 1-4

在线出版日期: 2011-11-09（万方平台首次上网日期，不代表论文的发表时间）