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

Jaeyoung Lee, Hyundong Shin, Joon Tae Kim, Jun Heo

Research output: Contribution to journalArticle

9 Citations (Scopus)

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-andforward 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 dualhop relaying is still beneficial in terms of the transmission capacity in wireless ad hoc Poisson networks.

Original languageEnglish
Article number58
JournalEurasip Journal on Wireless Communications and Networking
Volume2012
DOIs
Publication statusPublished - 2012

Keywords

  • Amplify-and-forward (AF)
  • Decode-and-forward (DF)
  • Dual-hop relay
  • Interference
  • Outage probability
  • Poisson network
  • Transmission capacity

ASJC Scopus subject areas

  • Signal Processing
  • Computer Science Applications
  • Computer Networks and Communications

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