Turbo processing for an OFDM-based MIMO system

被引：13

作者：

Liu, JH ^{[1
]}

Li, H

机构：

[1] Embry Riddle Aeronaut Univ, Dept Elect & Syst Engn, Daytona Beach, FL 32114 USA

[2] Univ Florida, Dept Elect & Comp Engn, Gainesville, FL 32611 USA

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2005年 / 4卷 / 05期

基金：

美国国家科学基金会;

关键词：

channel updating; iterative decoding; multiple-input; multiple-output (MIMO) system; orthogonal frequency-division multiplexing (OFDM); soft-detection; turbo processing; wireless local area network (WLAN) standards;

D O I：

10.1109/TWC.2005.853796

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We consider improving the overall system performance of an orthogonal frequency-division multiplexing-based multiple-input multiple-output (MIMO) wireless local area network system. We use a combined iterative detection/decoding and channel updating method, referred to herein as turbo processing, to improve performance. First, we improve a recently proposed list sphere decoder-based iterative MIMO soft-detector by constraining the value of the a priori information from a soft-in soft-out channel decoder. Second, we propose a channel updating scheme using the decoded packet data to improve the channel estimation accuracy. Simulation results show that turbo processing can be used to significantly improve the performance of the system considered.

引用

页码：1988 / 1993

页数：6

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