Paper title

“Image Transmission Using DS-SS Communication System With Adaptive CFAR Detectors”

Authors: Kazim Nanji, Joseph El Ghoul, Mohamed El-Tarhuni, and Mourad Barkat
Affiliation: Department of Electrical Engineering, American University of Sharjah, UAE

Abstract — In this paper, an experimental setup for transmitting images using a direct-sequence spread spectrum wireless communication system with various adaptive Constant False Alarm Rate (CFAR) detectors is presented. Images are sent at a chip rate of 12.5 MHz operating at 2.4 GHz carrier over a wireless indoor channel. Different CFAR detectors such as CA-CFAR, SO-CFAR, GO-CFAR, OS-CFAR and TM-CFAR are tested. It is shown that the TM-CFAR provides the best performance since it was able to detect all the paths available in the received signals and hence provides for greater multipath diversity compared to conventional constant threshold detectors. The OS-CFAR has the next best performance followed by the SO-CFAR and last the CA-CFAR. This is attributed to the non-homogenous environment due to multipath signals.