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Transmission capacity for dual-hop relaying in wireless ad hoc networks

Authors
Lee, JaeyoungShin, HyundongKim, Joon TaeHeo, Jun
Issue Date
2012
Publisher
SPRINGER INTERNATIONAL PUBLISHING AG
Keywords
amplify-and-forward (AF); decode-and-forward (DF); dual-hop relay; interference; outage probability; Poisson network; transmission capacity
Citation
EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING, pp.1 - 10
Indexed
SCIE
SCOPUS
Journal Title
EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING
Start Page
1
End Page
10
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/134199
DOI
10.1186/1687-1499-2012-58
ISSN
1687-1472
Abstract
To account for randomly distributed nodes in a wireless ad hoc network, the transmission capacity is defined as the number of successful transmissions taking place in the network per unit area under an outage constraint. In this paper, we analyze the transmission capacity for dual-hop relaying in a wireless ad hoc network in the presence of both cochannel interference and thermal noise, where interferers are spatially distributed following a Poisson distribution. Specifically, we first present the exact outage probability for amplify-and-forward and decode-and-forward protocols in a Poisson field of interferers without neglecting noise at all nodes. We then derive the transmission capacity of such networks, which determines the maximum allowable density of transmitting nodes for each relay strategy at a specified outage probability and data rate. Numerical results demonstrate that the dual-hop relaying is still beneficial in terms of the transmission capacity in wireless ad hoc Poisson networks.
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