信息与电子工程2011，Vol.9Issue(6)：675-679,5.
OFDM系统中的自适应比特功率分配算法
Adaptive bit and power allocation algorithm for OFDM system
摘要
Abstract
Each channel of Orthogonal Frequency Division Multiplexing(OFDM) system has its own fading characteristic. The system resources will not be made the best of if the same modulation mode is adopted. This paper proposes an efficient bit and power allocation algorithm for single user OFDM system under limited system capacity and a certain Bit Error Rate(BER). When the required BER is below 10-3, the proposed algorithm reduces the sending power by almost 2.5 dB compared with Chow algorithm. It also significantly reduces the time consuming under the constraint of system capacity. The simulation results show the effectiveness of this algorithm.关键词
正交频分复用/自适应调制/比特功率分配Key words
Orthogonal Frequency Division Multiplexing/adaptive modulation/bit and power allocation分类
信息技术与安全科学引用本文复制引用
廖全瑞,王钢..OFDM系统中的自适应比特功率分配算法[J].信息与电子工程,2011,9(6):675-679,5.基金项目
"973"计划资助项目(2007CB310601) （2007CB310601）
