A Unified Method of Spectrum Sensing for all Analog TV Signals

摘要

This paper introduces a unified approach of spectrum sensing for all existing analog television (TV) signals including NTSC, PAL and SECAM. We use a correlation based method (CBM) with a single reference signal for sensing any analog TV signals. The approach has been implemented in a hardware prototype specially designed for participating in Singapore TV white space (WS) test trial invited by Infocomm Development Authority (IDA) of Singapore government. Analytical results of the CBM method will be presented in the paper, as well as, hardware testing results for sensing various analog TV signals. Both AWGN and fading channels will be considered. It is shown that the theoretical results closely match with those from simulations. Sensing performance of the hardware prototype will also be presented for fading environment by using a fading simulator for broadcast indoor environment. Finally, various important properties of the prototype will also be presented.