Wcdma for Umts
Channel estimation for DS-CDMA with aperiodic spreading codes
ICASSP '99 Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 05
Blind separation of synchronous co-channel digital signals using anantenna array. I. Algorithms
IEEE Transactions on Signal Processing
Blind channel estimation for long code multiuser CDMA systems
IEEE Transactions on Signal Processing
Blind equalization in antenna array CDMA systems
IEEE Transactions on Signal Processing
Reduced-dimension blind space-time 2-D RAKE receivers for DS-CDMAcommunication systems
IEEE Transactions on Signal Processing
Blind decorrelating RAKE receivers for long-code WCDMA
IEEE Transactions on Signal Processing
On parameter estimation in long-code DS/CDMA systems: Cramer-Rao bounds and least-squares algorithms
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
A Toeplitz displacement method for blind multipath estimation forlong code DS/CDMA signals
IEEE Transactions on Signal Processing
An asynchronous multiuser CDMA detector based on the Kalman filter
IEEE Journal on Selected Areas in Communications
Channel estimation and multiuser detection in long-code DS/CDMA systems
IEEE Journal on Selected Areas in Communications
Signal processing advances for 3G WCDMA: from rake receivers to blind techniques
IEEE Communications Magazine
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Receivers for long-code systems are for computational reasons usually based on simple matched-filter techniques, and hence suffer from multiaccess interference. Decorrelating RAKE and MMSE receivers do not have this problem but have not been widely studied due to the apparent complexity of the inversion of a large code matrix. Tong, van der Veen Dewilde, and Sung (IEEE Tr. Signal Proc., 2003) derived a blind decorrelating RAKE receiver (DRR) and channel estimation algorithm for long-code CDMA systems, and showed how it can be efficiently implemented. In this paper, we continue on that work. We propose both single-user and multiuser blind source-channel estimation algorithms by making use of an iterative estimation scheme initialized by the DRR. Simulation results show significant improvement, even in heavily loaded systems. Moreover, with an implementation based on time-varying system theory, the proposed algorithm can be implemented efficiently at a cost similar to the RAKE.