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A Simple Joint Estimation Method of Residual Frequency Offset and Sampling Frequency Offset for DVB Systems
Ki-Won KWON Yongsoo CHO
IEICE TRANSACTIONS on Communications
Publication Date: 2008/05/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Broadcast Systems
OFDM, digital video broadcasting, residual frequency offset, sampling frequency offset, continual pilot,
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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.