Title :
Blind equalization for MIMO for channels based only on second order statistics by use of pre-filters
Author :
Luo, Hui ; Liu, Ruey-wen
Author_Institution :
Digital Video Express, Herndon, VA, USA
Abstract :
By the use of pre-filters, the uncorrelated white source signals can be separated from an unknown MIMO (multiple-input-multiple-output) FIR channel based only on the second order statistics of the received signals. Precisely, if the white source signals are mutually uncorrelated, then a set of special pre-filters with order K can be designed so that the unknown MIMO FIR channel is equalized if, and only if, the output signals of the equalizer are mutually uncorrelated and K-step temporally uncorrelated. A method for designing such pre-filters is given. These results can be applied to wireless communications for building a new multiple-access method potentially, by which multiple signals can be transmitted on the same narrow-band carrier simultaneously
Keywords :
MIMO systems; blind equalisers; fading channels; filtering theory; multi-access systems; multipath channels; multiuser channels; radiocommunication; signal detection; statistical analysis; time-varying channels; transient response; MIMO FIR channel; blind equalization; blind multiple-access signal detection; channel equalization; multipath fading; multiple signals transmission; multiple-input-multiple-output; narrow-band carrier; output signals; pre-filters design; second order statistics; signal separation; time-varying channel; uncorrelated white source signals; wireless communications; Blind equalizers; Buildings; Design methodology; Fading; Finite impulse response filter; MIMO; Narrowband; Signal design; Statistics; Wireless communication;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 1999. SPAWC '99. 1999 2nd IEEE Workshop on
Conference_Location :
Annapolis, MD
Print_ISBN :
0-7803-5599-7
DOI :
10.1109/SPAWC.1999.783030
