An Invited Paper for the
1998 IEEE Asilomar Conference on Signals, Systems, and Computers
Cochannel Signal Separation in Fading Channels Using a
Modified Constant Modulus Array
Brian L. Evans
Department of Electrical and Computer Engineering,
Engineering Science Building,
The University of Texas at Austin,
Austin, TX 78712-1084 USA
We convert a constant modulus (CM) array into a robust smart antenna by
modifying the error criterion to be a weighted sum of conventional CM
array error and decision-directed equalization error.
The new error criterion enables the CM array to
(1) separate digital cochannel signals with multipath and inter-symbol
(2) track fading signals.
The key contribution is that the modified error criterion adds
phase sensitivity to the otherwise phase insensitive CM error criterion.
We present computer simulations to show the signal tracking properties of the
CM array using the modified error criterion in a fading environment.
The full paper is available in
Last Updated 11/08/04.