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Performance Analysis of Pilot Patterns for Channel Estimation in OFDM Systems  

Choe, Kwang-Don (안양과학대학 전자통신정보공학부, 한양대학교 전자통신컴퓨터공학부)
Hyun, Deok-Soo (안양과학대학 전자통신정보공학부)
Park, Sang-Kyu (한양대학교 전자통신컴퓨터공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.8A, 2005 , pp. 664-670 More about this Journal
Abstract
OFDM is a very attractive technique for achieving high-bit-rate data transmission and high spectrum efficiency in fading environment. However, the reliable detection of an OFDM signal in time-varying multipath fading channels is a challenging problem. Accordingly, various channel estimation methods have been proposed for performance improvement. But, conventional pilot patterns for channel estimation in OFDM systems have not robust characteristics relating to various mobile speed. To solve this drawback in conventional patterns, we propose the pilot patterns modified from conventional patterns to have a good error performance in time-varying fading channel. Simulation results show that the performance of the proposed pilot patterns is better than conventional patterns in fast time-varying channel.
Keywords
Channel estimation; OFDM; Pilot Pattern;
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1 남기호, 오성근, 선우명훈, '시변 주파수 선택적 채널에서 OFDM 시스템의 채널추정을 위한 Curve-Fitting 방법', 통신 정보 합동 학술대회, Vol. 14, pp. III-A-2. 1-5, Apr 2000
2 M. J. Fernandez-Getino Garcia, S. Zazo, J. M. Paez-Borrallo, 'Pilot patterns for channel estimation in OFDM,' lEE Electronics Letters, Vol. 36, No. 12, pp. 1049-1050, June 2000   DOI   ScienceOn
3 Ulrich Reimers, 'Digital video broadcasting,' IEEE Communications Magazine, Vol. 36, Issue. 6, pp. 104-110, June 1998
4 Rohit Negi, John Cioffi, 'Pilot tone selection for channel estimation in a mobile OFDM system,' IEEE Trans. Consumer Electronics, Vol. 44, pp. 1122-1128, Aug 1998   DOI   ScienceOn
5 L. Hanzo, M. Munster, B. J. Choi and T. Keller, OFDM and MC-CDMA for Broadband Multi-User Communications, WLANs and Broadcasting, WIELY, 2003
6 Binfeng Bai, Xin Xu, Yueming Cai, Zi Ii, 'Optimal pilot patterns for OFDM system based on two-dimension sampling theory,' in Proc. IEEE Neural Networks and Signal Processing, Vol. 1, 14-17, pp. 663-666, Dec 2003   DOI
7 D. P. Petersen and D. Middleton, 'Sampling and reconstruction of wave-number limited functions in N-dimensional Euclidean spaces,' Information and Control, 5 (1962), 279-323   DOI
8 김영주, 남도원, 박상규, 'OFDM통신 시스템에 서 개선된 최대우도 채널 추정 기법', 한국통신학회 하계 종합 학술 발표회 논문초록집, Vol. 29, pp. 1A1-7.1-7.4, July 2004
9 Cavers, J. K., 'An analysis of pilot symbol assisted modulation for Rayleigh fading channels,' IEEE Trans. Vehicular Technology, vol. 40, issue:4, pp. 686-693, Nov. 1991   DOI   ScienceOn
10 Tufvesson, F., Maseng, T., 'Pilot assisted channel estimation for OFDM in mobile cellular systems,' IEEE Vehicular Technology Conference, Vol. 3, pp. 1639-1643, May 1997
11 Richard Van Nee and Ramjee Prasad, OFDM for Wireless Multimedia Communications, Artech House Publishers, 2000