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 that 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.
Blind User Detection in Doubly Dispersive DS/CDMA Fading Channels / S., Buzzi; L., Venturino; A., Zappone; DE MAIO, Antonio. - In: IEEE TRANSACTIONS ON SIGNAL PROCESSING. - ISSN 1053-587X. - STAMPA. - 58:(2010), pp. 1446-1451. [10.1109/TSP.2009.2033001]
Blind User Detection in Doubly Dispersive DS/CDMA Fading Channels
DE MAIO, ANTONIO
2010
Abstract
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 that 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.