A Widely Linear DF-MMSE Receiver for DS CDMA with BPSK Modulation

TitleA Widely Linear DF-MMSE Receiver for DS CDMA with BPSK Modulation
Publication TypeConference Paper
Year of Publication2003
AuthorsSchober, R., W. H. Gerstacker, and L. Lampe
Conference NameGlobal Telecommunications Conference, 2003. GLOBECOM '03. IEEE
Pagination1548 -1552
Date Publisheddec.
Keywordsadaptive filter coefficient, adaptive filters, automatic repeat request, binary phase-shift keying, BPSK modulation, code division multiple access, decision-feedback minimum mean-squared error, direct-sequence code-division multiple access, DS-CDMA, least mean squares methods, least-mean-square algorithm, linear DF-MMSE receiver, LMS method, phase shift keying, radio receivers, radiofrequency filters, recursive least-squares algorithm, spread spectrum communication

In this paper, we propose a widely linear (WL) decision-feedback (DF) minimum mean-squared error (MMSE) receiver for direct-sequence code-division multiple access (DS-CDMA) with binary phase-shift keying (BPSK) modulation. Both theoretical considerations and simulations show that the novel receiver yields significant performance gains over both WL receivers without feedback and conventional DF receivers. In particular, the proposed WL DF-MMSE receiver achieves a high performance even in overloaded systems. For efficient adaptation of the filter coefficients a WL least-mean-square (LMS) algorithm and a WL recursive least-squares (RLS) algorithm are devised


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