Title :
Serial Acquisition of DS-CDMA Signals using Smart Antennas and Adaptive Thresholding Constant False Alarm Rate Processing
Author :
Alamri, Tariq H. ; Alshebeil, Saleh A. ; Barkat, Mourad
Author_Institution :
Tech. Affairs, Commun. & Inf. Technol. Comm. (CITC), Saudi Arabia
Abstract :
This paper proposes an adaptive pseudonoise (PN) code acquisition system that adopts smart antennas and a cell averaging constant false alarm rate (CA-CFAR) processor to achieve reliable PN code acquisition in the presence of fading and interference. Hence, the decision threshold is adjusted according to the varying environment in order to improve the detection performance. The performance of the proposed system has been assessed theoretically by deriving closed form expressions for the probability of detection and probability of false alarm. The mean acquisition time is also obtained, and simulation results have been presented to verify the derived theoretical analysis.
Keywords :
adaptive antenna arrays; code division multiple access; probability; signal detection; spread spectrum communication; DS-CDMA signals; adaptive pseudonoise code acquisition system; adaptive thresholding constant false alarm rate processing; cell averaging constant false alarm rate processor; closed form expressions; detection probability; direct sequence-code division multiple access; fading; false alarm probability; interference; mean acquisition time; serial acquisition; smart antennas; Adaptive arrays; Antenna arrays; Fading; Filtering; Interference; Multiaccess communication; Radar detection; Signal processing; Spread spectrum radar; Testing; Adaptive threshold; CFAR; code-division multiple-access (CDMA); pseudonoise (PN); smart antennas;
Conference_Titel :
Signal Processing and Communications, 2007. ICSPC 2007. IEEE International Conference on
Conference_Location :
Dubai
Print_ISBN :
978-1-4244-1235-8
Electronic_ISBN :
978-1-4244-1236-5
DOI :
10.1109/ICSPC.2007.4728357