| Paper: | SPCOM-P9.10 | ||
| Session: | (Semi)blind Techniques II | ||
| Time: | Thursday, May 20, 15:30 - 17:30 | ||
| Presentation: | Poster | ||
| Topic: | Signal Processing for Communications: Multiuser Detection and Signal Separation | ||
| Title: | ITERATIVE MAP MULTIUSER DETECTION FOR CONSTANT MODULUS CONSTELLATIONS IN SYNCHRONOUS CDMA | ||
| Authors: | Shannon Blunt; Naval Research Laboratory | ||
| K. C. Ho; University of Missouri-Columbia | |||
| Abstract: | This paper generalizes previous work on BPSK [1] to multiuser detection for constant modulus constellations in synchronous CDMA communication systems based on maximum a posteriori (MAP) estimation. The known finite alphabet of discrete transmitted symbols is approximated as a stochastic parameter with Gaussian distributions centered at the true values of the symbol constellation. This allows for the development of a MAP estimator that takes a priori knowledge of the symbol constellation into account in order to improve estimation accuracy. We examine the performance of the proposed algorithm for BPSK, QPSK, and 8PSK and compare the results with other well-known multiuser detection techniques. | ||
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