Title :
Combining blind equalization with constant modulus properties
Author :
Van der Veen, Alle-Jan ; Trindade, António
Author_Institution :
Dept. of Electr. Eng., Delft Univ. of Technol., Netherlands
fDate :
Oct. 29 2000-Nov. 1 2000
Abstract :
This paper presents an approach to multi-user blind space-time equalization exploiting the constant modulus (e.g. BPSK, m-PSK or QAM) modulation properties of the source signals. This is a problem that asks for both a blind equalization and a blind source separation based on the modulation properties. Previously proposed algorithms have consisted of two steps in sequence: equalization to linear mixtures of the source signals followed by separation of these mixtures, or separation into constant modulus source signals at several delays followed by assigning outputs to corresponding users. We combine both types of properties into a one-stage algebraic technique.
Keywords :
blind equalisers; code division multiple access; delays; multiuser channels; phase shift keying; quadrature amplitude modulation; BPSK; FIR convolutive channel; QAM; blind equalization; blind source separation; constant modulus modulation; constant modulus properties; constant modulus source signals; delay spread; linear mixtures; m-PSK; one-stage algebraic technique; periodic CDMA codes; source signals; Ash; Binary phase shift keying; Blind equalizers; Blind source separation; Delay; Finite impulse response filter; Multiaccess communication; Quadrature amplitude modulation; Space technology; Wideband;
Conference_Titel :
Signals, Systems and Computers, 2000. Conference Record of the Thirty-Fourth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-6514-3
DOI :
10.1109/ACSSC.2000.911253