A New Algorithm of Frequency Offset Estimation

Frequency synchronization for OFDM is very important because the carrier frequency offset (CFO) will damage the performance. Based on the correlation between the front half-symbol and the back half-symbol in BPSK modulation, a cost function is deduced which varies with the carrier frequency offset a...

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Bibliographic Details
Published in2007 International Conference on Machine Learning and Cybernetics Vol. 2; pp. 813 - 817
Main Authors Qing-Ming Yi, Min Shi
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2007
Subjects
Algorithm
Binary phase shift keying
Cost function
Cybernetics
Frequency estimation
Frequency offset estimation
Frequency synchronization
Iterative algorithms
Machine learning
Machine learning algorithms
OFDM
OFDM modulation
Signal analysis
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ISBN1424409721
9781424409723
ISSN2160-133X
DOI10.1109/ICMLC.2007.4370254

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Summary:Frequency synchronization for OFDM is very important because the carrier frequency offset (CFO) will damage the performance. Based on the correlation between the front half-symbol and the back half-symbol in BPSK modulation, a cost function is deduced which varies with the carrier frequency offset as a sine function, and then a new carrier frequency offset estimation algorithm is presented. Then frequency offset estimation can be conducted based on this cost function. At the same time, the method that simplifies iterative calculation is given, which makes the algorithm suitable for hardware implementation and practical application. The results are also suitable for OFDM signal based on QPSK and 8PSK modulation.
ISBN:1424409721
9781424409723
ISSN:2160-133X
DOI:10.1109/ICMLC.2007.4370254