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Blind Carrier Frequency Offset Estimation Based on Polynomial Rooting for Interleaved Uplink OFDMA
Ann-Chen CHANG Chih-Chang SHEN
Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Vol.E96-A
No.10
pp.2057-2060 Publication Date: 2013/10/01 Online ISSN: 1745-1337
DOI: 10.1587/transfun.E96.A.2057 Print ISSN: 0916-8508 Type of Manuscript: LETTER Category: Communication Theory and Signals Keyword: carrier frequency offset, interleaved OFDMA, MVDR, polynomial rooting,
Full Text: PDF(248.9KB)>>
Summary:
This letter deals with blind carrier frequency offset estimation by exploiting the minimum variance distortionless response (MVDR) criterion for interleaved uplink orthogonal frequency division multiple access (OFDMA). It has been shown that the complexity and estimation accuracy of MVDR strictly depend on the grid size used during the search. For the purpose of efficient estimation, we present an improved polynomial rooting estimator that is robust in low signal-to-noise ratio scenario. Simulation results are provided for illustrating the effectiveness of the proposed estimator.
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