Low complexity blind frequency-offset estimator for OFDM systems over ISI channels

2003 ◽  
Author(s):  
Chengyang Li ◽  
Man-On Pun ◽  
S. Roy
Keyword(s):  
Low Complexity ◽  
Frequency Offset ◽  
Ofdm Systems ◽  
Isi Channels

A Low Complexity Integer Frequency Offset Estimation Scheme Based on Coherence Phase Bandwidth for OFDM Systems

2013 ◽  
Vol 479-480 ◽  
pp. 878-882
Author(s):  
Youngseok Lee ◽  
Seong Ro Lee ◽  
Seungsoo Yoo ◽  
Jeongyoon Shim ◽  
Jaewoo Lee ◽  
...  
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
Low Complexity ◽  
Frequency Offset ◽  
Frequency Division ◽  
Ofdm Systems ◽  
Frequency Offset Estimation ◽  
Timing Offset ◽  
Estimation Scheme ◽  
Reduced Complexity ◽  
Integer Frequency Offset

In this paper, we propose a low complexity integer frequency offset estimation scheme based on coherence phase bandwidth for orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme overcomes the effect of the timing offset via correlating the local and received OFDM training symbols in a coherence phase bandwidth block unit. Moreover, by utilizing a threshold to determine an interger frequency offset etimate, the proposed scheme need not calculate correlation values for all possible interger frequency offset candidates. From numerical results, it is demonstrated that the proposed scheme can estimate the integer freqeuncy offset with a reduced complexity while minataining the same level of the estimation performance.

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