Title :
The Kalman filter as the optimum MMSE multiuser CDMA detector
Author :
Lim, Teng Joon ; Ma, Yao
Author_Institution :
Centre for Wireless Commun., Nat. Univ. of Singapore, Singapore
Abstract :
It is shown that the Kalman filter implements the exact linear MMSE filter in an asynchronous multiuser CDMA system, given any detection delay. The Kalman filter is a finite-order recursive filter as opposed to the well-known tapped-delay line (TDL) MMSE filter, which must grow in length with increasing time and is therefore not practically implementable. Our result is useful as a baseline for comparison with other linear detectors, and may lead to adaptive detectors with (soft) feedback
Keywords :
Kalman filters; adaptive signal detection; code division multiple access; least mean squares methods; receivers; Kalman filter; adaptive detectors; asynchronous multiuser CDMA system; detection delay; exact linear MMSE filter; finite-order recursive filter; optimum MMSE multiuser CDMA detector; Bit error rate; Delay; Detectors; Equations; Gaussian noise; Multiaccess communication; Noise measurement; Nonlinear filters; Statistics; Vectors;
Conference_Titel :
Information Theory and Communications Workshop, 1999. Proceedings of the 1999 IEEE
Conference_Location :
Kruger National Park
Print_ISBN :
0-7803-5268-8
DOI :
10.1109/ITCOM.1999.781441
