Blind Channel Estimation in Multicode CDMA Using Multiantenna Receiver
Wireless Personal Communications: An International Journal
EURASIP Journal on Wireless Communications and Networking - Special issue on innovative signal transmission and detection techniques for next generation cellular CDMA systems
A low-complexity blind multiuser receiver for long-code CDMA
EURASIP Journal on Wireless Communications and Networking - Special issue on innovative signal transmission and detection techniques for next generation cellular CDMA systems
Blind multiuser detection for long-code CDMA systems with transmission-induced cyclostationarity
EURASIP Journal on Wireless Communications and Networking - Special issue on advanced signal processing algorithms for wireless communications
EURASIP Journal on Wireless Communications and Networking
Physical layer built-in security analysis and enhancement algorithms for CDMA systems
EURASIP Journal on Wireless Communications and Networking
Physical layer built-in security analysis and enhancement algorithms for CDMA systems
EURASIP Journal on Wireless Communications and Networking
EURASIP Journal on Wireless Communications and Networking
Hi-index | 35.68 |
The problem of blind channel identification for direct-sequence/code-division multiple-access (DS/CDMA) multiuser systems is explored. For wideband DS/CDMA signals, multipath distortion is well modeled by a finite-impulse response filter. In this work, a blind channel identification technique based on second-order statistics is investigated. The method exploits knowledge of the spreading code of the user of interest via matched filtering, as well as properties of spreading codes. The current scheme focuses on a method appropriate for randomized long sequence DS/CDMA. This access scheme poses special challenges as the spreading codes are time varying. An analytical approximation of the mean-squared error is derived using perturbation techniques. The performance of the algorithm is studied via simulation and through the mean-squared error approximation, which is observed to be tight