Random access transport capacity of multihop AF relaying: A throughput-reliability tradeoff

Jaeyoung Lee, Sung Il Kim, Saejoon Kim, Jun Heo

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

To determine the capacity of distributed wireless networks (i.e., ad hoc networks), the random access transport capacity was proposed as the average maximum rate of successful end-to-end transmission in the distance. In this article, we consider the random access transport capacity for multihop relaying to find the end-to-end throughput of a wireless ad hoc network, where each node relays the signal using an amplify-and-forward (AF) strategy. In particular, we analyze the exact outage probability for multihop AF relaying in the presence of both co-channel interference and thermal noise, where interferers are spatially distributed following a Poisson distribution. In our numerical results, it is observed that the maximum random access transport capacity is achieved at a specific spatial density of transmitting nodes due to the throughput-reliability tradeoff as the number of transmitting nodes (=interferers) increases. We compute the optimal spatial density of transmitting nodes that maximize their random access transport capacity. As a result, we can obtain the actual random access transport capacity of multihop AF relaying and predict the maximum number of transmitting nodes per unit area to maximize their performance.

Original languageEnglish
Article number104
JournalEurasip Journal on Wireless Communications and Networking
Volume2013
Issue number1
DOIs
Publication statusPublished - 2013 May 28

Keywords

  • Amplify-and-forward (AF)
  • Interference
  • Multihop relaying
  • Poisson network
  • Random access transport capacity
  • Throughput-reliability tradeoff

ASJC Scopus subject areas

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

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