標題: Maximum-Likelihood Blind Synchronization for GFDM Systems
作者: Wang, Po-Sen
Lin, David W.
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Carrier frequency offset (CFO);cyclic prefix (CP);generalized frequency-division multiplexing (GFDM);maximum likelihood (ML);synchronization;timing offset
公開日期: 六月-2016
摘要: Generalized frequency-division multiplexing (GFDM) inherits the cyclic-prefixed (CP) block signaling structure from orthogonal frequency-division multiplexing (OFDM). The feasibility of CP-based maximum-likelihood (ML) blind synchronization for GFDM systems, however, has not been assessed in the literature. We find that such synchronization is complicated by the covariance structure of the signal which, due to nonorthogonal pulse shaping, possesses a time-varying signal power and some weak self-induced interference. Neglecting the latter and approximating the former by the average power enable us to obtain an approximate-ML solution based on a recent result on OFDM synchronization in wide-sense stationary uncorrelated scattering (WSSUS) channels. Simulations show that the resulting method for GFDM yields comparable performance, under commonly considered pulse-shaping filters, to its kin for OFDM.
URI: http://dx.doi.org/10.1109/LSP.2016.2552234
http://hdl.handle.net/11536/133616
ISSN: 1070-9908
DOI: 10.1109/LSP.2016.2552234
期刊: IEEE SIGNAL PROCESSING LETTERS
Volume: 23
Issue: 6
起始頁: 790
結束頁: 794
顯示於類別:期刊論文