Code-aided blind adaptive new user detection in DS/CDMA systems with fading time-dispersive channels
IEEE Transactions on Signal Processing
Adaptive detection of range distributed targets
IEEE Transactions on Signal Processing
Multiuser channel estimation for CDMA systems over frequency-selective fading channels
IEEE Transactions on Wireless Communications
Parameter Estimation and Multiuser Detection for Bandlimited Long-Code CDMA Systems
IEEE Transactions on Wireless Communications
Multiuser Detection in a Dynamic Environment– Part I: User Identification and Data Detection
IEEE Transactions on Information Theory
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The problems of detecting the presence of a new user and of estimating the delays of its multipath replicas in a direct-sequence/code-division-multiple-access (DS/CDMA) system are investigated. Despite previous works, we consider a doubly-dispersive fading channel model and we propose a new code-aided detection algorithm which relies on the application of a powerful statistical tool known as the method of sieves. The proposed detector is blind and bounded constant false alarm rate. As a by-product of the detection stage, a new blind procedure to estimate the multipath channel delays of the detected user is also derived.