Achievable Rate for Multiple-hop Gaussian Relay Channel with Linear Relaying

被引:0
|
作者
Deng Zhixiang [1 ]
Wang Baoyun [1 ]
Lang Fei [1 ]
Ma Yayan [1 ]
机构
[1] Nanjing Univ Posts & Telecommun, Coll Telecommun & Informat Engn, Nanjing, Jiangsu, Peoples R China
来源
PROCEEDINGS OF 2012 IEEE 11TH INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING (ICSP) VOLS 1-3 | 2012年
关键词
linear relaying; multiple-hop relay channel; single-letter" optimization; time-sharing AF; achievable rate; NETWORKS; CAPACITY;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, the optimization problem of the multiple-hop relay channel with linear relaying is discussed. The capacity for the multiple-hop Gaussian relay channel with linear relaying is derived, which can be formulated as an optimization problem over the relaying matrices and the covariance matrix of the signals transmitted at the source. It is proved that the solution to this optimization problem is equivalent to a "single-letter" optimization problem when some certain conditions are satisfied. And the solution to this "single-letter" optimization problem has the same form as the expression of the rate achieved by time-sharing amplify and forward (TSAF). Simulation results show that the achievable rate with linear relaying is close to the maxflow mm-cut capacity, if channel gain of one certain hop is smaller than that of all the other hops relatively.
引用
收藏
页码:1311 / 1314
页数:4
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