Title :
A fractionally-spaced maximum-likelihood sequence estimation receiver in a multipath fading environment
Author :
Wan, Yongbing ; Liu, Qingli ; Sendyk, Andrew M.
Author_Institution :
NovAtel Communications Ltd., Calgary, Alta., Canada
Abstract :
A fractionally spaced maximum-likelihood sequence estimation (FS-MLSE) receiver is described. The FS-MLSE algorithm is effective in combating the intersymbol interference (ISI) in a multipath fading environment where the multipath delay spread is comparable to the transmitted symbol duration or only a fraction of it. The intermediate values (other than the symbol values) required by the FS-MLSE algorithm are obtained by interpolation from the symbol decisions and the Nyquist filter coefficients. Simulation results show that the FS-MLSE algorithm exhibits a significant performance improvement over the conventional symbol-spaced MLSE algorithm in a relatively short delay spread environment
Keywords :
cellular radio; fading; interference suppression; intersymbol interference; maximum likelihood estimation; phase shift keying; radio receivers; radiowave propagation; signal processing; FS-MLSE algorithm; Nyquist filter coefficients; cellular radio; fractionally-spaced maximum-likelihood sequence estimation receiver; intersymbol interference; multipath delay spread; multipath fading environment; performance; symbol decisions; transmitted symbol duration; Delay effects; Delay estimation; Fading; Filters; Interpolation; Intersymbol interference; Maximum likelihood estimation; Receivers; Time division multiple access; Viterbi algorithm;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0532-9
DOI :
10.1109/ICASSP.1992.226304
