Title :
MLSE and equalization of space-time coded signals
Author :
Naguib, Ayman E. ; Seshadri, Nambi
Author_Institution :
AT&T Labs-Res., Florham Park, NJ, USA
Abstract :
Diversity transmission at the base station is an effective technique to combat adverse effects of fading. This is suggested as an alternative to diversity at the terminal, thereby reducing the implementation complexity. Space-time coding has been proposed as a coding technique for diversity transmission that will provide additional performance gains. We describe a maximum likelihood sequence estimator (MLSE) for space-time coded signals that exploits the structure present in some of these codes. Simulation results of the proposed equalizer show a substantial improvement over single antenna transmission
Keywords :
Rayleigh channels; cellular radio; dispersive channels; diversity reception; encoding; equalisers; interference suppression; maximum likelihood sequence estimation; multipath channels; radiofrequency interference; time-varying channels; MLSE; base station; diversity transmission; frequency selective Rayleigh fading; implementation complexity reduction; interference problem; interference suppression; maximum likelihood sequence estimator; multipath propagation; performance gain; simulation results; single antenna transmission; space-time coded signals equalization; space-time coding; time dispersion; time varying fading; wireless communication channels; Antenna arrays; Base stations; Diversity reception; Fading; Frequency; Interference suppression; Maximum likelihood estimation; Receiving antennas; Transmitting antennas; Wireless communication;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851559
