Title :
Linear equalizers for flat Rayleigh MIMO channels
Author :
Hedayat, Ahmadreza ; Nosratinia, Aria ; Al-Dhahir, Naofal
Author_Institution :
Texas Univ., Richardson, TX, USA
Abstract :
We consider linear detectors for MIMO systems, i.e., multi-antenna systems where linear equalizers are employed to remove spatial interference. We analyze the behavior of linear equalizers through outage probability. The MMSE equalizer was found to behave in unexpected ways. Contrary to the usual intuition, the performance of MMSE and zero-forcing equalizers may not coincide at high-SNR. This is especially true at low spectral efficiencies, where the MMSE equalizer may achieve full spatial diversity.
Keywords :
MIMO systems; Rayleigh channels; diversity reception; equalisers; least mean squares methods; MMSE equalizer; flat Rayleigh MIMO channels; high-SNR conditions; joint spatial encoding; linear equalizers; multiple-antenna systems; outage probability; separate spatial encoding; spatial diversity; spatial interference removal; spectral efficiency; zero-forcing equalizers; Detectors; Equalizers; Fading; Gaussian noise; Interference; MIMO; Receiving antennas; Signal to noise ratio; Transmitting antennas; Vectors;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on
Print_ISBN :
0-7803-8874-7
DOI :
10.1109/ICASSP.2005.1415742
