Investigating the performance of single- and multichannel wireless receivers in generic-K fading channels

• Main Author: Jyoteesh Malhotra
• Format: Article
• Language: English
• Published: Maejo University 2011-03-01
• Series: Maejo International Journal of Science and Technology
• Subjects: shadowed fading channel; outage probability; average bit error rate; moment generating function; diversity reception; computational mathematics; fading channel modeling
• Online Access: http://www.mijst.mju.ac.th/vol5/96-107.pdf

By using versatile generic-K statistical model, a performance analysis of wireless system has been carried out through the composite fading channel scenarios. The composite fading model used here is flexible enough to represent all forms of mixed shadowed-fading channel conditions. With the aid of moment generating function (MGF) approach and Padé approximation (PA) technique, different performance measures such as outage probability and average bit error rate (ABER) have been evaluated for a variety of digital modulation formats. In contrast to previously obtained relatively complicated expressions in terms of MeijerG & Whittaker special functions, the PA technique has been used here to find tractable rational expressions for the MGF of output SNR. Using these simple rational expressions, the performance evaluations have been done for both single- and multichannel receivers under different shadowed-fading channel conditions. The numerical results are also validated through computer simulations, which show a perfect match.