MC-CDMA系统中的自适应比特和功率分配算法  

Adaptive Bit and Power Allocation Algorithm in MC-CDMA System

作　　者：陈佳锐[1] 唐碧华[1] 刘元安[2] 

机构地区：[1]北京邮电大学电子工程学院,北京100876 [2]北京邮电大学电信工程学院,北京100876

出　　处：《无线通信技术》2007年第1期22-25,共4页Wireless Communication Technology

摘　　要：在研究MC-CDMA系统和自适应比特分配技术的基础上,提出了一种适合MC-CDMA系统的自适应比特和功率分配算法。本算法以扩频支路为单位,根据系统中各子载波的不同信道增益,动态地分配数据比特和发射功率。仿真结果表明,使用该算法可以大大减小发射功率,提高系统性能。An adaptive bit and power allocation algorithm for MC-CDMA system is proposed in this paper based on the study of MC-CDMA system and adaptive allocation technology＇ This algorithm takes the spread spectrum branch as an allocation unit and adaptively allocates bit and power according to channel state information. Simulation results show that by the proposed algorithm, the transmission power can be reduced significantly and the performance of system is also improved.

关 键 词：MC-CDMA 自适应 比特和功率分配 扩频支路 

分 类 号：TN929.5[电子电信—通信与信息系统]