A Simple Joint Estimation Method of Residual Frequency Offset and Sampling Frequency Offset for DVB Systems

Ki-Won KWON  Yongsoo CHO  

Publication
IEICE TRANSACTIONS on Communications   Vol.E91-B   No.5   pp.1673-1676
Publication Date: 2008/05/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.5.1673
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Broadcast Systems
Keyword: 
OFDM,  digital video broadcasting,  residual frequency offset,  sampling frequency offset,  continual pilot,  

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Summary: 
This letter presents a simple joint estimation method for residual frequency offset (RFO) and sampling frequency offset (STO) in OFDM-based digital video broadcasting (DVB) systems. The proposed method selects a continual pilot (CP) subset from an unsymmetrically and non-uniformly distributed CP set to obtain an unbiased estimator. Simulation results show that the proposed method using a properly selected CP subset is unbiased and performs robustly.