Title :
A multiuser multi-antenna system for downlink transmission in frequency-selective fading channels
Author :
Guo, Li ; Huang, ETh-Fang
Author_Institution :
Dept. of Electr. Eng., Notre Dame Univ., IN, USA
Abstract :
In frequency-dispersive multipath environments, multiuser multi-antenna systems have to deal with both co-channel interference (CCI) and inter-symbol interference (ISI). This paper presents a novel low-complexity scheme employing single-carrier frequency-domain pre-processing. With known channel information at the transmitter, we derive the optimal pre-weighting matrix which effectively removes the CCI and suppresses ISI simultaneously with low complexity. Simulation results show the improved bit error rate and throughput performance provided by the proposed scheme.
Keywords :
antenna arrays; cochannel interference; dispersive channels; error statistics; fading channels; frequency-domain analysis; interference suppression; intersymbol interference; matrix algebra; multipath channels; multiuser channels; radio transmitters; CCI; ISI; bit error rate; cochannel interference; downlink transmission; frequency-dispersive channel; frequency-selective fading channel; intersymbol interference; low-complexity scheme; multipath environment; multiuser multiantenna system; optimal preweighting matrix; single-carrier frequency-domain preprocessing; transmitter channel state information; Bit error rate; Downlink; Frequency; Frequency-selective fading channels; Intersymbol interference; OFDM; Peak to average power ratio; Radiofrequency interference; Throughput; Transmitters;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2005 IEEE 6th Workshop on
Print_ISBN :
0-7803-8867-4
DOI :
10.1109/SPAWC.2005.1506246
