RESOURCE ALLOCATION FOR DOWNLINK TWO-USER OFDMA SYSTEMS WITH WIRELESS NETWORK CODING

被引：0
|
作者：
Tarasak, Poramate [1 ]
Sun, Sumei [1 ]
机构：
[1] ASTAR, Inst Infocomm Res, Singapore 138632, Singapore
来源：
SPAWC 2011: 2011 IEEE 12TH INTERNATIONAL WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS | 2011年
关键词：
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
We first address a sum-rate maximization problem under a sum-power constraint. By introducing the concept of virtual user, we solve the problem by using the Lagrange dual method. We then look into a sum-power minimization problem under sum-rate constraints. The Lagrange dual method and an exhaustive search method are proposed, which achieve similar performance, but the former has a lower complexity. Our simulation shows about 3-dB power saving of our scheme over an OFDMA system without network coding.
引用
收藏
页码：261 / 265
页数：5
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