%0 Journal Article
%T Blind user detection in doubly-dispersive DS/CDMA channels
%A Stefano Buzzi
%A Luca Venturino
%A Alessio Zappone
%A Antonio De Maio
%J Mathematics
%D 2009
%I arXiv
%R 10.1109/TSP.2009.2033001
%X In this work, we consider the problem of detecting the presence of a new user in a direct-sequence/code-division-multiple-access (DS/CDMA) system with a doubly-dispersive fading channel, and we propose a novel blind detection strategy which only requires knowledge of the spreading code of the user to be detected, but no prior information as to the time-varying channel impulse response and the structure of the multiaccess interference. The proposed detector has a bounded constant false alarm rate (CFAR) under the design assumptions, while providing satisfactory detection performance even in the presence of strong cochannel interference and high user mobility.
%U http://arxiv.org/abs/0909.3226v1