Abstract:

Based on the generalized probability data association (GPDA) algorithm method in quadrature amplitude modulated (QAM) in multi-input multi-output (MIMO) system, the same algorithm was applied to code division multiple access(CDMA) system combined with multiuser detection method, and the softinput softoutput(SISO) GPDA + SISO FEC(forward error correction) joint multiuser detector (MUD) was proposed. The external information was utilized to process interference reducing, decoding and decision. Computer simulation results show this scheme can achieve maximum near optimism performance of single user receiver with less complexity.

Key words: code division multiple access, generalized probabilitydataassociation algorithm, iterated multiuser detection, softinput softoutput