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Multihop Diversity for Fading Mitigation in Multihop Wireless Networks
 

Summary: Multihop Diversity for Fading Mitigation in
Multihop Wireless Networks
Chen Dong, Lie-Liang Yang, and Lajos Hanzo
School of ECS, University of Southampton, SO17 1BJ, United Kingdom
Email: cd2g09,lly,lh@ecs.soton.ac.uk, http://www-mobile.ecs.soton.ac.uk
Abstract--The concept of multihop diversity is proposed, where all the
nodes of a multihop link are assumed to have buffers for temporarily
storing their received packets. During each time-slot, the best hop having,
for example, the highest signal-to-noise ratio (SNR), is selected from the
set of those hops that have packets awaiting transmission in the buffer. The
packet is then transmitted over the best hop. This hop-selection procedure
yields selection diversity, but it requires the global channel knowledge of
the hops' channel quality. In this paper, we assume having perfect channel
knowledge and focus our attention on the principles and performance
bounds of the error probability and outage probability. Our studies show
that relying on multiple hops has the potential of providing a significant
diversity gain, which may be exploited for enhancing the reliability of
wireless multihop communications.
I. INTRODUCTION
Owing to their advantages, multihop communications [14] have

  

Source: Anderson, Jim - School of Mathematics, University of Southampton

 

Collections: Mathematics