Title :
MMSE multiuser detection for CDMA data networks
Author :
Gu, Guoxiang ; He, Jianqiang
Author_Institution :
Dept. of Electr. & Comput. Eng., Louisiana State Univ., Baton Rouge, LA, USA
Abstract :
We consider minimum mean-squared-error (MMSE) design for multiuser detection in direct sequence/spread-spectrum (DS/SS) code division multiple access (CDMA) data networks. State-space model for the CDMA channel adopted. The multiuser detectors are shown to have the same form as the state estimators, and the MMSE detector to be equivalent to the Kalman filter after suitable augmentation with the mean-squared-error (MSE) preserved. The bit error rate (BER) is analyzed, and an illustrative example is worked out for the linear MMSE multiuser detector obtained in this paper.
Keywords :
Kalman filters; cellular radio; code division multiple access; data communication; error statistics; least mean squares methods; multiuser detection; spread spectrum communication; state estimation; state-space methods; CDMA data networks; Kalman filter; MMSE multiuser detection; bit error rate; code division multiple access; direct sequence CDMA; minimum mean-squared-error; spread spectrum CDMA; state estimators; state-space model; Bit error rate; Detectors; Dispersion; Finite impulse response filter; MIMO; Maximum likelihood detection; Maximum likelihood estimation; Multiaccess communication; Multiuser detection; State estimation;
Conference_Titel :
Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-7700-1
DOI :
10.1109/WCNC.2003.1200370
