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Blind Carrier Frequency Offset Estimation Based on Particle Swarm Optimization Searching for Interleaved OFDMA Uplink

Ann-Chen CHANG, Chih-Chang SHEN

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Summary :

In this letter, standard particle swarm optimization (PSO) with the center-symmetric trimmed correlation matrix and the orthogonal projection technique is firstly presented for blind carrier frequency offset estimation under interleaved orthogonal frequency division multiple access (OFDMA) uplink systems. It doesn't require eigenvalue decomposition and only needs a single OFDMA data block. Second, this letter also presents adaptive multiple inertia weights with Newton method to speed up the convergence of standard PSO iteration process. Meanwhile, the advantage of inherent interleaved OFDMA signal structure also is exploited to conquer the problems of local optimization and the effect of ambiguous peaks for the proposed approaches. Finally, several simulation results are provided for illustration and comparison.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E99-A No.9 pp.1740-1744
Publication Date
2016/09/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E99.A.1740
Type of Manuscript
LETTER
Category
Communication Theory and Signals

Authors

Ann-Chen CHANG
  Ling Tung University
Chih-Chang SHEN
  Ling Tung University

Keyword