Cooperative Spectrum Sensing over Rayleigh Fading Channel in Cognitive Radio
نویسندگان
چکیده
Cognitive radio is a novel technology that can potentially improve the utilization efficiency of the radio spectrum. Spectrum sensing is the key component of cognitive radio technology. However, detection is compromised when a user experiences shadowing or fading effects. In such cases, user cannot distinguish between an unused band and a deep fade. Thus, cooperative spectrum sensing is proposed to optimize the sensing performance. We focus performance of cooperative spectrum sensing over Rayleigh fading channel in Cognitive Radio. This paper presents a simulation comparison of Rayleigh fading with non-fading AWGN based on hard fusion AND, OR and MAJORITY rules. Comparing the AWGN curve with Rayleigh fading, we observe that spectrum sensing is harder in presence of Rayleigh. We also observe that the OR rule has the better performance than AND and MAJORITY rule. Furthermore, spectrum sensing in AWGN non-fading has the better results than Rayleigh.
منابع مشابه
Cooperative Spectrum Sensing over Fading Channel in Cognitive Radio
Spectrum sensing is the key component of cognitive radio technology. Spectrum sensing is a tough task because of shadowing, fading, and time-varying nature of wireless channels. However, detection is compromised when a user experiences shadowing or fading effects. In such cases, user cannot distinguish between an unused band and a deep fade. Thus, cooperative spectrum sensing is proposed to opt...
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