A New Joint Symbol Synchronization and Fine Frequency  Offset Estimation Algorithm in IEEE 802.11n

doi:10.13190/jbupt.201204.59.huangm

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2012, Vol. 35 ›› Issue (4): 59-63.doi: 10.13190/jbupt.201204.59.huangm

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A New Joint Symbol Synchronization and Fine Frequency Offset Estimation Algorithm in IEEE 802.11n

HUANG Ming1,2,3 ,ZENG Yong-bo2 ,LI Zheng-ping2,LUO Shou-shan1,3 ,XU Cheng-qian1

1.Information Security Center, Beijing University of Posts and Telecommunications 2.College of Information Engineering, North China University of Technology 3.Beijing Safe-Code Technology Company Limited

Received:2011-12-08 Revised:2012-02-12 Online:2012-08-28 Published:2012-07-08
Contact: ming E-mail:huangmingncut@126.com

Abstract

Abstract:

The introduction of cyclic shift delay (CSD) is used in IEEE 802.11n to distinguish different spatial streams, however it poses a challenge to synchronization. The traditional synchronization methods, which utilize the crosscorrelation between the local training sequence and the received signal, will cause many spurious peaks and result in deteriorated synchronization performance. A new joint symbol synchronization and fine frequency offset estimation algorithm is proposed. It exploits the structure of IEEE 802.11n preamble and adopts a delaycorrelation algorithm to eliminate the effect of CSD. The proposed algorithm has advantages in avoiding the effect of carrier frequency offset, suppressing the generation of spurious peak results and improving the detection accuracy.

Key words: MIMO-OFDM, IEEE 802.11n, cyclic shift delay, synchronization

CLC Number:

TN911.22

HUANG Ming,ZENG Yong-bo ,LI Zheng-ping,LUO Shou-shan ,XU Cheng-qian. A New Joint Symbol Synchronization and Fine Frequency Offset Estimation Algorithm in IEEE 802.11n[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2012, 35(4): 59-63.

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A New Joint Symbol Synchronization and Fine Frequency Offset Estimation Algorithm in IEEE 802.11n

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