MULTI HOP ENERGY EFFICIENT RELAYING IN COGNITIVE RADIO SYSTEMS

Abstract

Cognitive Radio Systems have emerged as one of the key enablers in high capacity and high data rate wireless communication systems. As wireless channels are highly random in nature, therefore sensing the spectrum and using the Channel State Information (CSI) to suppress the frequency tones leading to low Signal to Noise Ratio (SNR) is crucial to improve upon the BER performance of the system. Such systems can be efficiently modelled as a Software Defined Radio (SDR). In this paper, a multi hop cooperative relaying technique is proposed and a subsequent BER analysis follows.