Estimation of Fading Statistics of Nakagami Channel with Weibull Distributed Tolerable Outage Time

Anjana Jain, Prakash D. Vyavahare, Leeladhar Arya

Shri G. S. Institute of Technology and Science, Indore, India.

DOI: 10.4236/wet.2012.32012                

Abstract

Characterization of a mobile radio channel plays an important role in designing a reliable wireless communication system. Such channels are analyzed by two state model, namely satisfactory and outage state. This paper presents the analysis to estimate fading parameters of wireless channel with omission of certain outage durations which are considered as “Tolerance time”. Minimum outage duration which can be tolerated by a wireless fading channel to achieve desired packet error rate is defined as tolerance time. Normally a system with tolerable minimum outage time is analyzed based on Fade Duration Distribution (FDD) function over Rayleigh channel. In this paper Weibull function is used as FDD for varying tolerance time. The approach is simple and in general applicable from Rayleigh to Nakagami channels. The analysis is extended to study the effect of Tolerance time on channel fading statistics such as Average Fade Duration (AFD) and frequency of outage. Further the effects of various fade margin and Doppler spread on fading parameters are also investigated. The analysis can also be used in case of timeout expiration, connection resetting and congestion window control.

Keywords

Fading Statistics; Tolerance Time; Fade Duration Distribution Function; Weibull Function; Nakagami Wireless Channel; Minimum Outage Time

Conflicts of Interest

The authors declare no conflicts of interest.

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