Timing and delay spread estimation scheme in OFDM systems

In this paper, a scheme for symbol timing estimation and delay spread estimation using subblock correlation is proposed in the OFDM systems. The subblock correlation between the cyclic prefix and data symbol is applied to estimate symbol timing and the length of delay spread. Under a multipath fadin...

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Bibliographic Details
Published inIEEE transactions on consumer electronics Vol. 54; no. 2; pp. 316 - 320
Main Authors Wen, Jyh-Horng, Lee, Shu-Hong, Lee, Gwo-Ruey, Chang, Jin-Tong
Format Journal Article
LanguageEnglish
Published New York IEEE 01.05.2008
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
AWGN
Bandwidth
Channels
Correlation
Correlators
Delay
Delay estimation
Digital video broadcasting
Electronics
Frequency synchronization
OFDM
Orthogonal Frequency Division Multiplexing
Spreads
Symbols
Time measurements
Timing
Wireless communication
Wireless LAN
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Summary:In this paper, a scheme for symbol timing estimation and delay spread estimation using subblock correlation is proposed in the OFDM systems. The subblock correlation between the cyclic prefix and data symbol is applied to estimate symbol timing and the length of delay spread. Under a multipath fading channel referred to the OFDM multipath channel model in the standard of IEEE 802.11a/g WLAN, the results show that performance with the proposed scheme is better than that with Beek's scheme. In addition, the length of the delay spread could be estimated in the proposed scheme. Hence, in order to increase the bandwidth efficiency, the length of cyclic prefix could be adaptively assigned in the OFDM system.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0098-3063
1558-4127
DOI:10.1109/TCE.2008.4560092