Performance Analysis of Shadowed Fading model for Indoor Wireless Communication

Abstract

In this thesis, the performance of the shadowed fading model over indoor wireless communication channels is presented. Three shadowed fading models namely; and#954;-µ/gamma, FisherSnedecor ( F ) and Rayleigh/TWDP are considered for obtaining the performance measures such as Average Bit Error Rate (ABER), Outage Probability and Channel Capacity. The analyses have been performed under different scenarios like single channel, multiple channel, and OFDM systems. In order to analyze the performance of shadowed fading for single-channel; and#954;-µ/gamma and Rayleigh/TWDP models have been considered. The expressions of Probability Density Function (PDF), Cumulative Distribution Function (CDF), Moment Generating Function (MGF), Moments, Outage Probability, Amount of Fading (AF), ABER for different modulations schemes and Channel Capacity over various adaptive transmissions protocols for and#954;-µ/gamma shadowed fading model have been derived. As special case, the numerical results have been presented for different parameters of the and#954;-µ/gamma model and compared with previous reported results. Further, the expressions of PDF, CDF, MGF, Outage Probability, and ABER for different modulation schemes for Rayleigh/TWDP shadowed fading model have also been presented. The numerical results have been presented for different parameter values of Rayleigh/TWDP model. The improvement in system performance is observed by varying the shadowing parameter. Fading has a significant role to degrade the performance of wireless communication systems. This fading effect can be mitigated by employing the diversity combining techniques at the receiver. MRC diversity is the best method to improve the SNR at the output of the receiver. Therefore, the performance of F shadowed fading model with MRC diversity for i.i.d. branches have been analyzed in this thesis work. Primarily, the expressions of MGF, Moments, AF, ABER and Channel Capacity for F shadowed fading model have been derived.