Progressive linear precoder design for MIMO ARQ retransmissions with channel estimation error

SHI Zhi-hua; ZHAO Chun-ming; YANG Yi-jin; ZHOU Peng

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Progressive linear precoder design for MIMO ARQ retransmissions with channel estimation error

更新时间：2024-10-14

- Progressive linear precoder design for MIMO ARQ retransmissions with channel estimation error
- Issue 9, Pages: 7-14(2007)
- 作者机构：
  
  1. 东南大学移动通信国家重点实验室
  2. 东南大学移动通信国家重点实验室,江苏,南京,210096
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN919.72
- Published：2007
- 稿件说明：
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SHI Zhi-hua, ZHAO Chun-ming, YANG Yi-jin, et al. Progressive linear precoder design for MIMO ARQ retransmissions with channel estimation error[J]. 2007, (9): 7-14.
DOI：

SHI Zhi-hua, ZHAO Chun-ming, YANG Yi-jin, et al. Progressive linear precoder design for MIMO ARQ retransmissions with channel estimation error[J]. 2007, (9): 7-14. DOI：

摘要

针对MIMO ARQ系统中使用的重发机制

采用跨层设计思想

提出非理想信道估计条件下基于系统容量准则的次最优序贯线性预编码器的设计方案。首先推导出MIMO ARQ系统中存在信道估计误差时系统容量的上界和下界。理论分析和仿真结果表明

MIMO ARQ系统的容量在高信噪比时取决于信道估计误差。为简化处理

利用系统容量的下界并根据序贯预编码的思想

设计出ARQ重发时的次最优预编码器。仿真结果表明该次最优序贯预编码器可以获得良好的系统性能。

Abstract

Progressive linear precoders were investigated for packet retransmissions in MIMO ARQ systems with channel estimation error

as part of cross-layer wireless network research thrust.As the first step

lower and upper bounds were de-rived for the capacity of MIMO ARQ systems in the presence of channel estimation error.From these bounds

it was seen that the capacity was limited by the channel estimation error at high SNRs.For mathematical simplicity

a set of suboptimal progressive linear precoders have been proposed for ARQ retransmissions with channel estimation error

by utilizing the lower bound.Simulation results illustrated that the proposed suboptimal preocders can obtain satisfying performance.

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