Joint Synchronization Using Cyclic Property

It is well known that the cyclic property of transmitted signal can be used to achieve joint frame and carrier frequency synchronization, while the uncompensated sampling frequency offset (SFO) would still be a problem. Based on the observation that the impact of SFO on the received cyclic block and...

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Bibliographic Details
Main Authors: Aolin Xu, Kewu Peng, Zhixing Yang
Format: Conference Proceeding
Language:English
Subjects:
Analytical models
Communications Society
Frequency domain analysis
Frequency synchronization
Information science
OFDM
Paper technology
Robustness
Sampling methods
Wireless communication
Online Access:Request full text
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Summary:It is well known that the cyclic property of transmitted signal can be used to achieve joint frame and carrier frequency synchronization, while the uncompensated sampling frequency offset (SFO) would still be a problem. Based on the observation that the impact of SFO on the received cyclic block and its replica is equivalent to a relative time shift, a joint synchronization scheme solely based on cyclic property is proposed to achieve frame, sampling frequency and carrier frequency synchronization simultaneously. A two-dimensional sliding-window auto-correlator (2D-SWAC) is presented to implement the joint synchronization with low complexity. The proposed scheme is suitable for any transmission system with similar cyclic property. Meanwhile, it is robust to large sampling and carrier frequency offset and strong channel frequency selectivity, as demonstrated by the analysis and simulations.
ISSN:1550-3607
1938-1883
DOI:10.1109/ICC.2009.5199123