一种分数间隔恒模算法的宽带盲均衡器  

A wideband blind equalizer of fractionally spaced CMA

作　　者：张炜[1] 戴旭初[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系,安徽合肥230027

出　　处：《中国科学技术大学学报》2009年第9期961-969,共9页JUSTC

基　　金：国防重点实验室基金项目(200906ZD04)资助

摘　　要：提出了一种基于子带分解技术的分数间隔恒模算法(FSE-CMA)的宽带均衡器结构.该结构将子带分解和全频带的子卷积方法有机地结合在一起.子带分解的预白化作用能明显加快FSE-CMA的收敛速度;同时,子带分解和子卷积方法都允许对数据进行降速率的并行处理,因此能减小运算复杂度,有利于算法的实时实现.仿真实验结果验证了该结构的有效性.Based on subband decomposition technique, a new structure of fractionally spaced constant modulus algorithm（FSE-CMA） equalizer was proposed for wideband wireless transmission. The proposed blind equalizer effectively combines the subband decomposition technique and sub-convolution method. The pre-whiten effect of the subband decomposition can significantly improve the convergence speed of FSE- CMA. On the other hand, since the signals are down- sampled and processed in parallel by means of both the subband decomposition and sub-convolution method, the proposed structure possesses lower computational complexity, which is beneficial to the reabtime realization of FSE-CMA. Computer simulations were presented to illustrate the efficiency of the new FSE-CMA equalizer.

关 键 词：宽带无线通信 盲均衡 分数间隔恒模算法 子带分解技术 

分 类 号：TN911.5[电子电信—通信与信息系统]