An Efficient Joint Sub-Carrier, Bit, and Power Allocation of OFDM System in Fading Channels

被引：0
|
作者：
Li, Chisheng [1 ]
Chen, Jia [1 ]
Dai, Renfin [1 ]
机构：
[1] Nanchang Univ, Elect & Informat Engn Dept, Nanchang 330031, Peoples R China
来源：
2008 4TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING, VOLS 1-31 | 2008年
关键词：
OFDM; Sub-Carrier Allocation; Power Allocation; Fading Channels;
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this paper, we proposed an efficient joint subcarrier, bit and power allocation algorithm which tries to minimize the total transmit power for OFDM system, while maintaining the BER constraint and the rate requirement of each user. Some existing allocation algorithms allocate resources based on the "best channel gain" rule, which made some resources assigned to the users which are in deep fading. In this paper, we swap the sub-carriers between users to minimize the transmit power after the sub-carrier allocation is decided. Simulation results show that the performance of the proposed algorithm is much better than that of the other algorithms.
引用
收藏
页码：943 / 945
页数：3
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