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Walsh Coded Training Signal Aided Time Domain Channel Estimation Scheme In MIMO-OFDM Systems  

Jeon, Hyoung-Goo (동의대학교 정보통신공학과)
Jang, Jong-Wook (동의대학교 컴퓨터공학과)
Song, Hyoung-Kyu (세종대학교 정보통신공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.3C, 2007 , pp. 331-337 More about this Journal
Abstract
In this paper, we propose a novel Walsh coded training signal design and Walsh decoding method to estimate the channel response in MIMO-OFDM systems. The Walsh coded training signals are designed to have orthogonal property in time domain. Using the orthogonal property, the Walsh decoding process makes it possible to separate the desired training signal from the received signal and to estimate the channel response. The computer simulation results show that the proposed method exhibits almost the same performance as Li's original method using the optimal training sequence, even though the proposed method has much lower complexity.
Keywords
MIMO-OFDM; Channel estimation; Walsh code; Walsh decoding; training signal;
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