Title :
A Widely Linear DF-MMSE Receiver for DS-CDMA with BPSK Modulation
Author :
Schober, R. ; Gerstacker, W.H. ; Lampe, L.H.-J.
Author_Institution :
Dept. of Electr. & Comput. Eng., British Columbia Univ., BC
Abstract :
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.
Keywords :
adaptive filters; automatic repeat request; code division multiple access; least mean squares methods; phase shift keying; radio receivers; radiofrequency filters; spread spectrum communication; BPSK modulation; DS-CDMA; LMS method; adaptive filter coefficient; binary phase-shift keying; decision-feedback minimum mean-squared error; direct-sequence code-division multiple access; least-mean-square algorithm; linear DF-MMSE receiver; recursive least-squares algorithm; Binary phase shift keying; Direct-sequence code-division multiple access; Feedback; Filters; Least squares approximation; Modulation coding; Multiaccess communication; Performance gain; Phase modulation; Phase shift keying;
Conference_Titel :
Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-7974-8
DOI :
10.1109/GLOCOM.2003.1258497
