TITLE:
Performance Evaluation of Two-Hop Wireless Network under Asymmetric Fading Environment
AUTHORS:
Sarwar Jahan, Md Imdadul Islam, Mohamed Ruhul Amin
KEYWORDS:
Two-Hop, Asymmetric Network, Relay Network, Rayleigh Fading, Nakagami Fading
JOURNAL NAME:
Journal of Computer and Communications,
Vol.3 No.12,
December
8,
2015
ABSTRACT: To enhance the reliability of long wireless
link, a relay is placed between transmitter and receiver which break the link
into two parts: transmitter to relay called 1st hop and relay to receiver
called 2nd hop; such arrangement is called two hop wireless links. In two-hop
wireless communication sometimes 1st and 2nd hops are affected by different
types of fading called asymmetric fading environment. In this paper we
consider four different combinations of Rayleigh and Nakagami-m fading on 1st
and 2nd hop to observe the profile of combined pdf (probability density
function) and cdf (cumulative distribution function). With the help of cdf we
determine the variation of outage probability of mixed fading. Finally we plot
the SER (symbol error rate) against the SNR (signal to noise ratio) of the 2nd
hop for all possible combinations of the two fading taking the SNR of 1st hop
as a parameter. Although recent literature deals with asymmetric fading
environment but in this paper instead of details statistical model of such
fading we provide the relative scenario of mixed fading on 2-hop wireless link.