Adaptive Power Allocation for Decode-and-Forward MIMO-OFDM Relay System

被引：0
|
作者：
Li, Ting [1 ]
Yu, Hua [1 ]
Liu, Shouyin [1 ]
机构：
[1] Huazhong Normal Univ, Elect & Informat Engn Dept, Wuhan, Peoples R China
来源：
2009 5TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING, VOLS 1-8 | 2009年
关键词：
MIMO-OFDM; decode-and-forward; relay; power allocation; suhcarrier paring;
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, a two-hop MIMO-OFDM relay system with a decode-and-for-ward (DF) relay is considered, in which each terminal is equipped with multiple antennas. With the goal of maximizing the instantaneous capacity, a suboptimal power allocation algorithm under the total transmit power constraint is proposed. Since the independence of fading channel during each hop, subcarrier pairing strategy is given to further improve the system capacity. The simulation results show that the proposed suboptimal power allocation algorithm in this paper achieves a higher capacity than the uniform power allocation, and that subcarrier paring is an effective way to enhance the system capacity.
引用
收藏
页码：962 / 965
页数：4
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