International Journal of Scientific and Engineering Research, 7(6):1144–1149, June, 2016. Paper doi abstract bibtex
The correct detection of the presence of licensed user (Primary user) is the most essential requirement of Cognitive Radio Network (CRN). Otherwise the PU will face jamming signal from unlicensed user (Secondary User) and therefore will not be able to transmit. At the same time if a PU is not in transmitting mode but SU senses the presence of PU in transmitting mode then the SU will stop transmission even though the frequency band is free to use. In this situation, different path loss models incorporating with different fading channels have been proposed previously to measure the performance of CRN. Fading is generally a signal loss due to sudden alteration in channel response. In this paper, the aim is to evaluate the performance under different types of fading condition (such as Rayleigh, Nakagami-m, Weibull and Normal) with the incorporation of different types of path loss models such as Lee's path loss Model, COST-231 Walfisch Ikagami Model and ECC-33/ Hata Okumura Extended Model along with MRC and Selection combining Scheme under frequency ranges of 1900 MHz and 2100 MHz as this range is well suited for 4G technology.