Joint iterative decision feedback channel estimation and detection for Turbo coded V-BLAST MIMO-OFDM systems

QIAO Xiao-qiang1; CAI Yue-ming1; XU Xin1; XU You-yun1

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Joint iterative decision feedback channel estimation and detection for Turbo coded V-BLAST MIMO-OFDM systems

更新时间：2024-10-14

- Joint iterative decision feedback channel estimation and detection for Turbo coded V-BLAST MIMO-OFDM systems
- Issue 1, Pages: 103-108(2006)
- 作者机构：
  
  1. 解放军理工大学通信工程学院
  2. 解放军理工大学通信工程学院江苏南京210007总参第63研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN919.72
- Published：2006
- 稿件说明：
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QIAO Xiao-qiang1, CAI Yue-ming1, XU Xin1, et al. Joint iterative decision feedback channel estimation and detection for Turbo coded V-BLAST MIMO-OFDM systems[J]. 2006, (1): 103-108.
DOI：

QIAO Xiao-qiang1, CAI Yue-ming1, XU Xin1, et al. Joint iterative decision feedback channel estimation and detection for Turbo coded V-BLAST MIMO-OFDM systems[J]. 2006, (1): 103-108. DOI：

摘要

针对Turbo编码V-BLASTMIMO-OFDM系统

提出了一种联合迭代判决反馈信道估计与检测方案

该方案将Turbo迭代译码与最小二乘(LS

leastsquare)信道估计相结合

充分利用Turbo迭代译码后的信息位和校验位软值信息来改善信道估计性能。仿真结果表明

该方案不仅纠正了低信噪比时的差错传播问题

还使得整个系统的信道估计性能得到进一步提高

且适合于非常恶劣的信道环境。

Abstract

For Turbo coded V-BLAST MIMO-OFDM systems

a joint iterative decision feedback channel estimation and detection scheme were presented

which combined the Turbo iterative decoding with least square channel estimation

and made full use of the soft systematic bits and soft parity bits of Turbo iterative decoding to improve the channel estimation performance.The simulation results showed that not only the error propagation was corrected at low signal-noise-ratio but also the channel estimation performance of the whole system was improved greatly.Furthermore

the scheme is applicable for very bad channel environments.

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