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Summary: 834 IEEE COMMUNICATIONS LETTERS, VOL. 10, NO. 12, DECEMBER 2006
Outage Probability of Cooperative Relay Networks
in Nakagami-m Fading Channels
Himal A. Suraweera, Student Member, IEEE, Peter J. Smith, Senior Member, IEEE,
and Jean Armstrong, Senior Member, IEEE
Abstract-- It is well known that the cooperation among nodes
can improve the performance of a wireless network. In this letter
we analyze the outage probability behaviour of a relay network
in Nakagami-m fading channels. A closed-form solution for the
outage probability is derived. When m = 1, the results are
applicable for Rayleigh fading. Computer simulations confirm
the presented mathematical analysis.
Index Terms-- Cooperative diversity, multihop transmission,
outage probability, Nakagami-m channels.
I. INTRODUCTION
RECENTLY cooperative and relay protocol strategies have
been the subject of great interest among the research
community due to their possible use in cellular, ad-hoc/sensor
networks and military communications [1][3]. These con-
cepts of employing relays to help forward the information to
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