频选快衰落信道的Turbo均衡算法  

Turbo Equalization with Frequency-Selective Fast-Fading Channel Tracing

作　　者：彭岳星[1] 王维新[1] 刘陈[1] 吴镇扬[1] 

机构地区：[1]东南大学无线电工程系,江苏南京210096

出　　处：《电子学报》2003年第4期498-501,共4页Acta Electronica Sinica

基　　金：国家 8 63计划资助项目 (No 2 0 0 1AA1 2 30 1 5)

摘　　要：针对频选快衰落信道 ,本文提出卡尔曼滤波信道跟踪、软输出判决反馈均衡及软输入软输出信道解码迭代处理的Turbo均衡算法以充分利用已获得的信息 ,实现信道估计、信道均衡与信道解码的迭代更新 ,并克服传统判决反馈均衡器误差传播的缺陷 .仿真表明 ,本算法能有效地跟踪快衰落信道 。This paper proposes a Turbo equalization algorithm, which consists of Kalman Filter channel tracing and soft-output decision-feedback equalization (DFE) and soft-input soft-output channel decoding, to realize iterative channel estimation, channel equalization and channel decoding for frequency-selective fast-fading channels. The simulations show the proposed algorithm can efficiently trace the fast-fading channel and greatly reduce the inter-symbol interference (ISI) after two iterations.

关 键 词：码间干扰 判决反馈均衡 卡尔曼滤波 信道估计 信道解码 

分 类 号：TN911.5[电子电信—通信与信息系统]