Title :
Efficient adaptive receivers for joint equalization and interference cancellation in multiuser space-time block-coded systems
Author :
Younis, Waleed M. ; Sayed, Ali H. ; Al-Dhahir, Naofal
Author_Institution :
Dept. of Electr. Eng., Univ. of California, Los Angeles, CA, USA
fDate :
11/1/2003 12:00:00 AM
Abstract :
This paper develops low-complexity adaptive receivers for space-time block-coded (STBC) transmissions over frequency-selective fading channels. The receivers are useful for equalization purposes for single user transmissions and for joint equalization and interference cancellation for multiuser transmissions. The receivers exploit the rich code structure of STBC codes in order to deliver recursive-least-squares (RLS) performance at least-mean-squares (LMS) complexity. Besides reduced complexity, the proposed adaptive receivers also lower system overhead requirements.
Keywords :
adaptive signal detection; block codes; equalisers; fading channels; interference suppression; least squares approximations; space-time codes; adaptive receivers; equalization; fading channels; interference cancellation; low-complexity receivers; multiuser space-time block-coded systems; recursive-least-squares performance; rich code structure; single user transmissions; system overhead requirements; Adaptive equalizers; Channel state information; Diversity methods; Frequency-selective fading channels; Interference cancellation; Maximum likelihood decoding; OFDM; Receiving antennas; Resonance light scattering; Transmitting antennas;
Journal_Title :
Signal Processing, IEEE Transactions on
DOI :
10.1109/TSP.2003.818209
