Influence of the Rice Factor on the Performance of Blind Detectors for Cooperative Spectrum Sensing

Dayan A. Guimarães, Luiz Gustavo B. Guedes

DOI: 10.14209/sbrt.2024.1571028762

Evento: XLII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT2024)

Keywords: Cognitive radio Dynamic spectrum access Rice factor Spectrum sensing

Abstract

Most spectrum sensing research relies on simple sensing channel models like pure Gaussian or Gaussian with fading, normally Rice or Rayleigh. Often, a fixed Rice factor is assumed across the coverage area, disregarding variable line-of-sight conditions between primary and secondary users. However, the Rice factor is an environment-dependent random parameter, and this study examines its impact on the performance of state-of-the-art blind detectors for cooperative spectrum sensing. It also takes into account other realistic scenarios like distance-dependent signal powers, nonuniform receiver noise, and consistent signal-to-noise ratio calibration. Findings reveal significant effects on certain detectors, with some showing resilience to Rice factor fluctuations.

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