NDLI: Coarse carrier and timing synchronization for interleaved OFDMA uplink system

Content Provider	IEEE Xplore Digital Library
Author	Ruiqin Miao Jun Sun Lin Gui Jian Xiong
Copyright Year	2010
Description	Author affiliation: Institute of Image Communication and Information Processing, Department of Electronic Engineering, Shanghai Jiao Tong University, 200240, China (Ruiqin Miao; Jun Sun; Lin Gui; Jian Xiong)
Abstract	In orthogonal frequency division multiple access (OFDMA) uplink system, estimations of time delay and carrier frequency offset (CFO) are both particularly challenging. In this paper, a coarse CFO and time delay estimation method is proposed for interleaved OFDMA uplink system. By exploiting the special scheme of interleaved OFDMA, the repetitive time-domain training symbol is designed, and the training sequences for different users have good autocorrelation and cross-correlation properties. Furthermore, the time delay and CFO estimation metrics are presented by making certain correlation between the received training symbol and the local sequence. Through searching peak of the proposed metrics, integral CFO of many subcarriers spaces for each user can be estimated, and then timing delay for each user can be found. Simulations illustrate the proposed estimation scheme can get good performance under multipath $channel.^{1}$
Starting Page	1
Ending Page	5
File Size	239564
Page Count	5
File Format	PDF
ISBN	9781424444618
e-ISBN	9781424444625
DOI	10.1109/ISBMSB.2010.5463114
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-03-24
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delay effects Delay estimation Time domain analysis Frequency conversion Extraterrestrial measurements Frequency estimation time delay estimation Multipath channels Carrier frequency offset (CFO) estimation interleaved orthogonal frequency division multiple access (OFDMA) Timing Autocorrelation Frequency synchronization
Content Type	Text
Resource Type	Article

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