A New Synchronization Algorithm Exploiting Cyclostationarity for OFDM Systems in Multipath Environment(Wireless Communication Technology)
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概要
- 論文の詳細を見る
Carrier frequency and symbol timing errors may greatly degrade the performance of the orthogonal frequency division mulitplexing (OFDM) system, especially in multipath environment. In this paper, we explore the cyclostationarity of OFDM signals, which only relies on second order statistics, to estimate the synchronization offset. First, a coarse carrier frequency offset estimator for multipath environment is developed using the second order statistics of the received OFDM signal. It has a wide capture range though not accurate. Second, we introduce a new synchronization algorithm based on cyclostationarity and matched filter theories, which can get the maximal estimation SNR in multipath environment. Both estimators utilize channel state information to achieve better estimation performance and are non-pilot aided. They can be combined to form a whole OFDM synchronizer for multipath environment. Finally, simulations confirm the performance of the estimation algorithm.
- 社団法人電子情報通信学会の論文
- 2003-08-01
著者
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Wang L
Electronics Engineering Department Of Tsinghua University
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Ren Y
Tsinghua Univ. Beijing Chn
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Ren Yong
Electronic Engineering Department Tsinghua University
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Wang Liang
Electronics Engineering Department Of Tsinghua University
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Ren Yong
Electronics Engineering Department Of Tsinghua University
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SHAN Xiuming
Electronic Engineering Department of Tsinghua University
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Shan X
Tsinghua Univ. Beijing Chn
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Shan Xiuming
Electronic Engineering Department Tsinghua University
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Ren Yong
Department Of Electronic Engineering Of Tsinghua University
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