A joint receiving scheme of RAKE combining and soft-output Viterbi equalization for low spreading factor wideband DS-CDMA systems is proposed in this paper. The equalization technique based on soft-output Viterbi algorithm (SOVA) is applied to symbol sequences after RAKE combining to effectively eliminate the multi-path interference (MPl) and inter-symbol interference (ISI) during transmission of high rate data in wideband DS-CDMA systems, which provides significant improvement over conventional RAKE receiver.
['Yu Chen', 'Changlong Xu', 'Chunming Zhao', 'Xiaohu You', 'Woogoo Park']
Joint receiving scheme of RAKE combining and Viterbi equalization for low spreading factor wideband DS-CDMA systems