2009/09/17 by Stefano Buzzi, Luca Venturino, Alessio Zappone +1 · 1 citation
Computer Science · Mathematics · #cs.IT #math.IT
paper · pdf · doi:10.1109/tsp.2009.2033001
published as IEEE Transactions on Signal Processing, Vol. 58, No. 3, pp. 1446 - 1451, March 2010 · Accepted for publication on IEEE Transactions on Signal Processing
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.