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http://dx.doi.org/10.5573/ieie.2014.51.6.290

Integer Frequency Offset Estimation using PN Sequence within Training Symbol for OFDM System  

Ock, Youn Chul (Div. of Electronics & Information Engineering, Yeungnam College of Science & Technology)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.51, no.6, 2014 , pp. 290-297 More about this Journal
Abstract
The synchronization of OFDM receiver is consisted of symbol timing offset(STO) estimation in time domain and carrier frequency offset(CFO) estimation in frequency domain. This paper proposes new algorithm for correcting the integer CFO after we have done correcting the STO and partial CFO. ICFO must be corrected, since the ICFO lead to degrade bit error rate(BER) of demodulation performance. The PN sequence has information which is subcarrier order since the modified PN sequence, length is same subcarrier, is used in this paper and is modulated each subcarrier by each chip. Thus the receiver track phase of PN sequence after FFTin order to find the subcarrier frequency offset. The proposed algorithm is faster and more simple than convenient methode as measuring carrier energy.
Keywords
OFDM synchronization; Carrier Frequency Offset Estimation; Training Symbol; PN sequence;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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