A Blind Joint Equalization and Multiuser Detection SDCMA Algorithm
一种联合均衡和多用户检测的SDCMA盲算法

This paper suggests two Steepest Decreasing Constant Modulus Algorithm (SDCMA) blind detection schemes for MultiCarrier Direct Sequence-Code Division Multiple Access (MC DS-CDMA) systems, one of which is the SDCMA blind equalization, and based on the former, the other of which is proposed, i.e., the blind joint equalization and multiuser detection SDCMA algorithm. The two SDCMA schemes and subspace-based Minimum Mean-Squared Error (MMSE) detection are compared in the paper. The simulation results show that Bit Error Rate (BER) performances of the two SDCMA schemes are both superior to that of the subspace-based scheme, and the joint SDCMA scheme, which takes advantage of renewing the equalization weight vector and the multiuser detector vector at the same time, greatly improves system performance and is the best of the three schemes.