A low complexity and robust frequency offset estimation algorithm for OFDM-Based WLAN systems

Authors:
Sanghun Kim;Seokho Yoon;Hyoung-Kee Choi;Sun Yong Kim
Affiliations:
School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Kyunggi-do, Korea;School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Kyunggi-do, Korea;School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Kyunggi-do, Korea;Department of Electronics Engineering, Konkuk University, Seoul, Korea
Venue:
ICCS'06 Proceedings of the 6th international conference on Computational Science - Volume Part II
Year:
2006

Citing 4
Cited 1

OFDM for Wireless Multimedia Communications

OFDM for Wireless Multimedia Communications
WLAN Systems and Wireless IP for Next Generation Communications

WLAN Systems and Wireless IP for Next Generation Communications
Multi-Carrier and Spread Spectrum Systems

Multi-Carrier and Spread Spectrum Systems
Synchronization with DMT modulation

IEEE Communications Magazine

A Novel Frequency Offset Estimation Algorithm Using Differential Combining for OFDM-Based WLAN Systems

ICCS '07 Proceedings of the 7th international conference on Computational Science, Part IV: ICCS 2007

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Abstract

This paper addresses the frequency offset estimation problem in the presence of the timing error for OFDM-based WLAN systems. When the timing error exists, the correlation value used for the frequency offset estimation could be reduced significantly due to the timing error, resulting in considerable degradation in estimation performance. In this paper, using the coherence phase bandwidth (CPB) and a threshold, a novel frequency offset estimation algorithm is proposed and based on which, an efficient timing error estimation algorithm is also proposed for the re-estimation of the frequency offset.