On the performance analysis of wireless receiver using generalized-gamma fading model
In this paper, we provide a unified analysis for wireless system over generalized fading channels that is modeled by the two parameter generalized gamma model. This model is versatile enough to represent short-term fading such as Weibull, Nakagami-m, or Rayleigh as well as shadowing. The performance measures such as the amount of fading, average bit error rate, and signal outage are considered for analysis. With the aid of moment generating function (MGF) approach and Padé approximation (PA) technique, outage probability and average bit error rate have been evaluated for a variety of modulation formats. We first use the PA technique to find a simple way to evaluate compact rational expressions for the MGF of output signal-to-noise ratio, unlike previously derived intricate expressions in terms of Fox’s H and MeijerG functions. Using these rational expressions, we evaluate the performance of wireless receivers under a range of representative channel fading conditions. Our results are validated through computer simulations, which shows perfect match.
KeywordsWireless channel modeling Digital modulation Outage probability Average bit error rate Moment generating function Padé approximation
- 1.Simon MK, Alouini M-S (2005) Digital communication over fading channels, 2nd ed. Wiley, New YorkGoogle Scholar
- 4.Yacoub MD (2002) The α-µ distribution: a general fading distribution. Proc. IEEE PIMRC, Lisbon, Portugal, pp 629–633Google Scholar
- 7.Gradshteyn IS, Ryzhik IM (1994) Table of integrals, series, and products, 5th ed. Academic, New YorkGoogle Scholar
- 9.Stokes JW, Ritcey JA (1998) A general method for evaluating outage probabilities using Padé approximations. In Proc. IEEE Global Telecommun Conf, vol 3, pp 1485–1490, Sydney, Australia, NovGoogle Scholar
- 11.Sagias NC, Mathiopoulos PT (2005) Switched diversity receivers over generalized gamma fading channels. IEEE Commun Lett 9:10Google Scholar