Turbo Equalization with Frequency-Selective Fast-Fading Channel Tracing

PENG Yue-xing; WANG Wei-xin; LIU Chen; WU Zhen-yang

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Turbo Equalization with Frequency-Selective Fast-Fading Channel Tracing

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- Turbo Equalization with Frequency-Selective Fast-Fading Channel Tracing
- Acta Electronica Sinica Vol. 31, Issue 4, Pages: 498-501(2003)
- 作者机构：
  
  东南大学无线电工程系,江苏,南京,210096
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.5
- Published：2003
- 稿件说明：
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PENG Yue-xing, WANG Wei-xin, LIU Chen, et al. Turbo Equalization with Frequency-Selective Fast-Fading Channel Tracing[J]. Acta Electronica Sinica, 2003, 31(4): 498-501.
DOI：

PENG Yue-xing, WANG Wei-xin, LIU Chen, et al. Turbo Equalization with Frequency-Selective Fast-Fading Channel Tracing[J]. Acta Electronica Sinica, 2003, 31(4): 498-501. DOI：

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

经两次迭代就可获得较为满意的码间干扰消除效果.

Abstract

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 reduce greatly the inter-symbol interference (ISI) after two iterations.

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