正交频分复用调制中的一种时域均衡器  

Study on the technique of the time domain equalizer in OFDM systems

作　　者：傅延增[1] 张海林[1] 王育民[1] 

机构地区：[1]西安电子科技大学综合业务网国家重点实验室,陕西西安710071

出　　处：《西安电子科技大学学报》2001年第1期88-91,104,共5页Journal of Xidian University

基　　金：国家部委预研基金资助项目 !(J5 2 2 0X0 0 )

摘　　要：利用无限冲击响应滤波器结构得到最佳的时域均衡器算法 ,在系统训练阶段对其抽头进行初始化 。A new adaptive TEQ (time equalizer) design for Orthogonal Frequency Division Multiplex (OFDM) demodulation is presented. The TEQ is a simple finite impulse response filter (FIR) used in the receiver for shortening the total length of the effective channel impulse response to avoid using a very long cyclic prefix, so that the simple effective single complex tap per subchannel equalizer can be used. We give a new approach to obtaining the optimal TEQ coefficients fully using the essential property of OFDM modulation. The computer simulation results are also given.

关 键 词：正交频分复用 自适应均衡 时域均衡器 

分 类 号：TN715[电子电信—电路与系统]