Title :
A blind intersymbol interference cancellation method for multi-user systems with channel diversity
Author :
Zhu, Jie ; Cao, Xi-Ren ; Ding, Zhi ; Shen, Junqiang
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong
Abstract :
We propose a direct blind zeroforcing approach to cancel intersymbol interference (ISI) in multiple user FIR channels. By selectively anchoring columns of the channel convolution matrix, we present two column-anchoring zeroforcing equalizers (CAZE). Unlike many known blind identification algorithms, these equalizers do not need an accurate estimate of the channel orders. Exploiting second order statistics of the received signals, they can retain a pre-selected block column in the channel convolution matrix (the number of columns in a block column equals that of the users) and force the remaining columns to zero. Simulation results show that the CAZE is effective for blind equalization of linear QAM wireless communication systems.
Keywords :
MIMO systems; convolution; diversity reception; equalisers; interference suppression; intersymbol interference; matrix algebra; multi-access systems; quadrature amplitude modulation; radiofrequency interference; statistical analysis; telecommunication channels; ISI; MIMO systems; blind identification algorithms; blind intersymbol interference cancellation; channel convolution matrix; channel diversity; column-anchoring zeroforcing equalizers; linear QAM wireless communication systems; multi-user systems; multiple user FIR channels; received signals; second order statistics; simulation results; Blind equalizers; Convolution; Finite impulse response filter; Higher order statistics; Interchannel interference; Interference cancellation; Intersymbol interference; MIMO; Quadrature amplitude modulation; Wireless communication;
Conference_Titel :
Signals, Systems & Computers, 1997. Conference Record of the Thirty-First Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-8186-8316-3
DOI :
10.1109/ACSSC.1997.680441