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Performance Evaluation of Space-Time Codes and Channel Estimation in OFDM System for Wireless LANs  

Lee, Sang-Mun (문경대학 정보통신계열)
Choi, Hyung-Jin (성균관대학교 전기전자 및 컴퓨터공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.27, no.8B, 2002 , pp. 760-770 More about this Journal
Abstract
Transmit diversity is an efficient diversity technique to improve performance and spectrum efficiency in wireless communication . Coding scheme designed for the transmit diversity is called space-time coding. In this paper, we propose a training structure to apply the transmit diversity to improve the performance of IEEE802.11a OFDM systems. Based on this training structure, we propose a channel estimation scheme using curve fitting. Also we compare and evaluate the performance of space-time codes. The performance of both diversity using space-time codes and channel estimation scheme is investigated by computer simulation in quasi-static 2-ray rayleigh fading environment.
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