Joint Symbol Timing and Carrier Frequency Offset Estimation for Mobile-WiMAX

Yong-An JUNG  Young-Hwan YOU  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E95-A   No.5   pp.986-989
Publication Date: 2012/05/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E95.A.986
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Communication Theory and Signals
OFDM,  IEEE 802.16e,  STO,  CFO,  joint timing and frequency estimation,  WiMAX,  

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This letter proposes two efficient schemes for the joint estimation of symbol timing offset (STO) and carrier frequency offset (CFO) in orthogonal frequency division multiplexing (OFDM) based IEEE 802.16e systems. Avoiding the effects of inter symbol interference (ISI) over delay spread by the multipath fading channel is a primary purpose in the letter. To do this, the ISI-corrupted CP is excluded when a correlation function is devised for both schemes, achieving the improved performance. To demonstrate the efficiency of the proposed methods, the performance is compared with the conventional method and is evaluated by the mean square error (MSE), acquisition range of CFO, and complexity comparison.