Sparsity-embracing multiuser detection for CDMA

Sparsity-embracing multiuser detection for CDMA systems with low activity factory

FREE-DOWNLOAD H Zhu… – Information Theory, 2009. ISIT
Abstract-The number of active users in code-division multiple access (CDMA) systems is often
much lower than the spreading gain. The present paper exploits fruitfully this a priori infor- mation
to improve performance of multiuser detectors. A low- activity factor manifests itself in a