Mobility

Redundant Residue Number System Assisted Multicarrier Direct-Sequence Code-Division Dynamic Multiple-Access for Cognitive Radios

Date Added: May 2012
Format: PDF

A Redundant Residue Number System assisted Multi-Carrier Direct-Sequence Code-Division Dynamic Multiple-Access (RRNS MC/DS-CDDMA) scheme is proposed for application in Cognitive Radios (CRs). Taking the advantages of both the Multi-Carrier Direct-Sequence Code-Division Multiple-Access (MC/DS-CDMA) and the RRNS, the RRNS MC/DS-CDDMA has a low-complexity for implementation, a high-flexibility for reconfiguration and is robust to dynamic spectrums. Associated with the RRNS MC/DS-CDDMA, in this paper, the so-called Receiver Multiuser Diversity aided Multi-Stage Minimum Mean-Square Error Multi-User Detector (RMD/MS-MMSE MUD) is considered for signal detection.