Title :
Rapidly converging multiuser CDMA detector for an asynchronous AWGN channel
Author :
Kamel, R.E. ; Siveski, Z.
Author_Institution :
Network Wireless Syst., AT&T Bell Labs., Whippany, NJ, USA
fDate :
6/8/1995 12:00:00 AM
Abstract :
A two-stage multiuser CDMA detector that utilises the decorrelator´s tentative decisions and a recursive least squares-type algorithm to form the multiple access interference estimates is proposed. The detector is near-far resistant, and it requires neither prior estimation of the received signal amplitudes, nor the use of training sequences. It offers a fast transient response, and better error performance than a similar detector that utilises a gradient descent algorithm
Keywords :
Gaussian channels; adaptive signal detection; code division multiple access; convergence; least squares approximations; recursive estimation; asynchronous AWGN channel; convergence; decorrelator tentative decisions; error performance; multiple access interference estimates; near-far resistant detector; recursive least squares-type algorithm; transient response; two-stage multiuser CDMA detector;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19950660
