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A New Sampling Frequency Offset Estimation Algorithm Using a Single OFDM Symbol  

Jung In-Jae (성균관대학교 전자전기공학과 통신시스템연구실)
Kim Yong-Serk (삼성전자 TN총괄 통신연구소)
Lee Kyu-Ha (삼성탈레스)
Choi Hyung-Jin (성균관대학교 전자전기공학과 통신시스템연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.11A, 2005 , pp. 1004-1011 More about this Journal
Abstract
In OFDM (Orthogonal Frequency Division Multiplexing) system, sampling frequency offset causes performance degradation due to increase of ICI. Sampling frequency offset can be generally estimated by correlation of the pilot signal or the known pattern within two contiguous OFDM symbol however, this method has the throughput degradation and the difficulty in applying to various OFDM systems. In this paper, we propose a new algorithm for sampling frequency offset estimation which can solve aforementioned issues. The proposed algorithm uses a single OFDM symbol to prevent throughput degradation and to apply to various OFDM-based communication systems flexibly Also, the proposed algorithm can enhance reliability by observing more number of correlations compared to the established algorithm in frequency domain. Extensive computer simulation shows that the proposed algorithm can improve the system performance in various channel conditions.
Keywords
OFDM; Sampling frequency; Sampling clock control;
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  • Reference
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