MC-CDMA系统的功率分配算法性能分析  

Performance analysis of power distribution controlling algorithm of MC-CDMA system

作　　者：杨柳[1] 唐云[2] 李翠然[3] 

机构地区：[1]深圳职业技术学院电子与信息工程学院,广东深圳518055 [2]北京环球信息应用开发中心,北京100094 [3]兰州交通大学电子与信息工程学院,甘肃兰州730070

出　　处：《兰州理工大学学报》2008年第3期100-103,共4页Journal of Lanzhou University of Technology

摘　　要：针对多载波调制技术的优点,基于Kondo等人提出的MC-CDMA系统方案,分析固定和可变步长的两种闭环功率控制算法对系统误码性能的影响,与单载波CDMA系统进行比较.仿真结果表明,当移动台以低速或中速运动,采用同一功率控制算法时,多载波系统的误码性能明显优于单载波系统;而对同一系统,采用可变步长的性能优于采用固定步长的性能.Taking the merit of multicarrier modulation technology into consideration and based on the scheme of MC-CDMA systems given by Kondo et al, the influence of two close-loop power controlling algorithms with fixed and alterable step length on the error code performance of the systems was analyzed and compared with that of CDMA system with single carrier wave. The simulation results showed that the MC-CDMA system was shown to have superior error code performance to that of CDMA system with single carrier wave when the mobile transmitter moved with low or moderate velocity and an identical power controlling algorithm was employed. And, when the alterable step length was used, the said performance was superior to that with fixed length.

关 键 词：多载波扩展频谱码分多址 闭环功率控制 频率分集 

分 类 号：TN914.4[电子电信—通信与信息系统]