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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- Korean Institute of Information Scientists and Engineers Journal of Electrical Engineering and Information Science Journal of Electrical Engineering and Information Science Vol.4 No.3
- 발행연도
- 1999.6
- 수록면
- 392 - 397 (6page)
이용수
초록· 키워드
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In this paper, a channel estimation algorithm for efficient transmission of orthogonal frequency division multiplexing signals in multipath channel is presented and analyzed. To increase transmission efficiency, known reference signals instead of the cyclic prefix are inserted into the guard interval. Estimation coefficients are obtained according to one-to-one correspondence between the received reference signals and the known ones in frequency domain and used to compensate the effect of channel on each subband. Computer simulation shows that bit error rate of the presented algorithm is slightly higher than that of the conventional one. However, the transmission efficiency of the system has been increased up to 20% when the length of guard interval is 1/4 the data block. Thus, the presented estimation algorithm is expected to be suitable for high speed transmission systems such as digital terrestrial broadcasting.
목차
Abstract
Ⅰ. Introduction
Ⅱ. Orthogonal Frequency Division Multiplexing System
Ⅲ. Channel Estimation Algorithm
Ⅳ. Performance Analysis
Ⅴ. Conclusions
References
저자소개
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