Title :
Decoding and equalization of unknown multipath channels based on block precoding and transmit-antenna diversity
Author :
Liu, Z. ; Giannakis, G.B. ; Scaglione, Anna ; Barbarossa, S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA
Abstract :
Transmit-antenna diversity has been exploited previously to develop high-performance space-time coders and simple maximum-likelihood decoders for transmissions over known flat fading channels. Based on blocking and multiple transmit-antennas, this paper derives novel precoders and decoders that eliminate intersymbol interference and achieve transmit diversity gain in the unknown multipath channels. When unknown, channel status information is acquired blindly based on a deterministic variant of the constant-modulus algorithm. The system performance is evaluated both analytically and with simulations.
Keywords :
OFDM modulation; block codes; diversity reception; equalisers; fading channels; interference suppression; intersymbol interference; land mobile radio; maximum likelihood decoding; multipath channels; parameter estimation; transceivers; transmitting antennas; BER; BER performance; ISI suppression; OFDM transceiver design; bit error rate; blind channel estimation; blind channel estimation algorithm; block precoding; channel status information; decoding; deterministic constant-modulus algorithm; equalization; flat fading channels; high-performance space-time coders; intersymbol interference; maximum-likelihood decoders; mobile radio; multipath channels; multiple transmit-antennas; precoders; simulations; space-time block codes; system performance; transmit diversity gain; transmit-antenna diversity; Analytical models; Block codes; Diversity methods; Fading; Maximum likelihood decoding; Maximum likelihood estimation; Multipath channels; OFDM; Receiving antennas; Transmitting antennas;
Conference_Titel :
Signals, Systems, and Computers, 1999. Conference Record of the Thirty-Third Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-5700-0
DOI :
10.1109/ACSSC.1999.832010
