Citation

Sridhar Krishnan and Brent R. Petersen, "Spatial-temporal decorrelating detector for synchronous code-division multiple-access channels," in Conf. Rec. 1997 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM '97), vol. 1 of 2, (Victoria, BC, Canada), pp. 22-27, Aug. 20-22, 1997.

Abstract

In this paper, a new multiuser detector for synchronous code-division multiple-access channels is developed, and the performance is compared with other multiuser detectors. The proposed multiuser detector is based on spatial-temporal filtering and decision-feedback techniques, hence the name spatial-temporal decorrelating decision-feedback (STDF) detector. An optimum STDF detector is expected to have an exponetial complexity as the number of users grow. A suboptimum STDF detector shows a better performance in terms of probabity of error (or SNR) and asymptotic efficiency as compared to the other suboptimum detectors. Simulation results under diverse channel conditions show that STDF is a banwidth efficient technique, which is an essential requirement for modern wireless communcations. Also the results indicate that STDF performance gains are more significant for relatively weak users.

Paper

Digital Object Identifier (DOI)
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