Title :
A data-aided OFDM/OQAM synchronization algorithm using maximum posterior probability criterion
Author :
Hao Chen ; Su Hu ; Gang Wu ; Shaoqian Li
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
The OFDM/offset QAM (OFDM/OQAM) systems are sensitive to synchronization errors. To overcome this shortage of OFDM/OQAM systems, in this paper, a data-aided joint symbol timing and carrier frequency offsets (CFO) estimation algorithm based on maximum posterior probability criterion is proposed. Compared to traditional data aided algorithms, the derived algorithm achieves better performance in multipath fading channels in terms of capture probability of symbol timing offsets, root mean square error (RMSE) of CFO estimation and bit error rate (BER) versus signal-to noise power ratio (SNR).
Keywords :
OFDM modulation; error statistics; fading channels; frequency estimation; maximum likelihood estimation; mean square error methods; multipath channels; quadrature amplitude modulation; synchronisation; BER; CFO estimation; OFDM-offset QAM systems; RMSE; SNR; bit error rate; data-aided OFDM-OQAM synchronization algorithm; data-aided joint symbol timing-carrier frequency offset estimation; maximum posterior probability criterion; multipath fading channels; root mean square error; signal-to-noise power ratio; synchronization errors; Joint data-aided synchronization; OFDM/OQAM; carrier-frequency offset; maximum posterior probability; symbol timing;
Conference_Titel :
Communication Technology and Application (ICCTA 2011), IET International Conference on
Conference_Location :
Beijing
DOI :
10.1049/cp.2011.0640
