Distributed Relay Selection for Two-Way Relaying Networks Based on Power Conservation

被引：3
|
作者：
Yang, Jie [1 ]
Cao, Xue-hong [2 ]
机构：
[1] Nanjing Univ Posts & Telecommun, Dept Commun & Informat Engn, Nanjing, Jiangsu, Peoples R China
[2] Nanjing Inst Technol, Dept Commun Engn, Nanjing, Jiangsu, Peoples R China
来源：
2014 INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATION AND SENSOR NETWORK (WCSN) | 2014年
关键词：
two-way; amplify-and-forward; power consumption; relay selection;
D O I：
10.1109/WCSN.2014.60
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
In order to improve the power efficiency and extend the lifetime of the two-way amplify-and-forward (AF) relaying system, this paper proposes a distributed relay selction scheme based on relay power conservation. The closed-form solution of the the optimal power allocation based on total power minimization under the signal-to-noise ratio (SNR) constraints is derived, and the relay which requires the minimum transmit power among all relays is selected to assist two-way transmissions. The scheme can be performed in a distributed manner which only requires user-relay channel state information. Simulation results demonstrate that the proposed scheme can significantly decrease the relay power consumption.
引用
收藏
页码：262 / 265
页数：4
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