Title :
Characterization of MIMO channels for spatial multiplexing systems
Author :
Heath, Robert W., Jr. ; Paulraj, Arogyaswami
Author_Institution :
Inf. Syst. Lab., Stanford Univ., CA, USA
Abstract :
Future wireless systems will employ multiple antennas at both transmitter and receiver to take advantage of large capacity gains. Two competing spatial modulation techniques for such systems are multiplexing, for high spectrum efficiency; and diversity, for high reliability. In this paper we show that the Demmel (1988) condition number of a MIMO (multiple-input multiple-output) channel characterizes its suitability for multiplexed transmission, over diversity transmission, based on a minimum Euclidean distance comparison. We examine the probability of obtaining channels suitable for multiplexing as a function of constellation, rate, and number of antennas, for i.i.d. flat-fading Rayleigh matrix channels
Keywords :
MIMO systems; Rayleigh channels; diversity reception; modulation; probability; receiving antennas; space division multiplexing; transmitting antennas; Demmel condition number; MIMO channels; capacity gain; constellation; diversity transmission; high reliability; high spectrum efficiency; i.i.d. flat-fading Rayleigh matrix channels; minimum Euclidean distance; multiple receiver antennas; multiple transmitter antennas; multiple-input multiple-output channel; multiplexed transmission; probability; rate; spatial modulation; spatial multiplexing systems; wireless systems; Euclidean distance; Fading; Information systems; MIMO; Mobile antennas; Receiving antennas; Robustness; Space time codes; Transmitters; Transmitting antennas;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.937008
