Title :
Blind multiuser equalization for time-varying channels
Author :
Artes, H. ; Hlawatsch, F.
Author_Institution :
Inst. of Commun. & Radio-Frequency Eng., Wien Univ., Austria
Abstract :
We propose two methods for deterministic blind equalization of linear time-varying (LTV) channels with multiple users. Our approach is based on an LTI (linear time invariant) multichannel representation of LTV channels. With the first method, the multiuser channel is equalized up to an instantaneous mixture that is subsequently resolved by means of a POCS (projections onto convex sets) algorithm. The second method performs the entire equalization (including resolution of the instantaneous mixture) by means of a POCS algorithm. Simulation results demonstrate the good performance of our methods
Keywords :
blind equalisers; matrix algebra; multiuser channels; signal resolution; time-varying channels; LTI multichannel representation; blind equalization; instantaneous mixture resolution; linear time invariant multichannel representation; linear time-varying channels; multiuser channel; projections onto convex sets algorithm; Art; Blind equalizers; Doppler shift; Electronic mail; Europe; Filters; Multiuser channels; Neodymium; Scattering parameters; Time-varying channels;
Conference_Titel :
Wireless Communications, 2001. (SPAWC '01). 2001 IEEE Third Workshop on Signal Processing Advances in
Conference_Location :
Taiwan
Print_ISBN :
0-7803-6720-0
DOI :
10.1109/SPAWC.2001.923854
