Optimizing soft information in relay networks

被引:5
作者
Gomadam, Krishna Srikanth [1 ]
Jafar, Syed Ali [1 ]
机构
[1] Univ Calif Irvine, Ctr Pervas Commun & Comp Elect Engn & Comp Sci, Irvine, CA 92697 USA
来源
2006 FORTIETH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS, VOLS 1-5 | 2006年
关键词
D O I
10.1109/ACSSC.2006.356574
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 [电气工程]; 0809 [电子科学与技术];
摘要
We classify relay forwarding schemes on the basis of soft and hard information. While soft information is highly beneficial, it may also incur additional expenditure of network resources such as power and bandwidth. The relay functionality optimization problem is therefore related to optimizing soft information. With SNR as a metric, we show that the optimal soft information relay mechanism for uncoded communication is the estimate and forward (EF) policy. We demonstrate that EF is well suited to both parallel and serial relay networks due to its optimized soft information content. We also provide an example of a hybrid network where the performance gain from EF is significant.
引用
收藏
页码:18 / +
页数:2
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