SDR Implementation of Energy Detection with Non-uniform Quantization Scheme

Abstract

This paper proposes two non-uniform quantization schemes and also introduces an implementation system based on Software Defined Radio (SDR) consisting of GNU Radio and Universal Software defined Radio Peripheral (USRP) to sense a spectrum. In cognitive radio (CR) systems, detection and error probability are representative indicators of system performance. These performance indicators are influenced by various variables, among which the energy measurements quantization affected before reporting to the fusion center. In order to minimize performance loss due to the quantization errors, it is important to understand the impact of the number of quantization levels and the quantization intervals on the performance of the overall system. This paper reports a detection and error probability performance of a CR system applied non-uniform quantization schemes consisting of SDR platform.