A Study of Connectivity in MIMO Fadinc Ad-Hoc Networks

Abstract

We investigate the connectivity of fading wireless ad-hoc networks with a pair of novel connectivity metrics. Our first metric looks at the problem of connectivity relying on the outage capacity of MIMO channels. Our second metric relies on a probabilistic treatment of the symbol error rates for such channels. We relate both capacity and symbol error rates to the characteristics of the underlying communication system such as antenna configuration, modulation, coding, and signal strength measured in terms of Signal-to-Interference-Noise-Ratio (SINR). For each metric of connectivity, we also provide a simplified treatment in the case of ergodic fading channels. In each case, we assume a pair of nodes are connected if their bi-directional measure of connectivity is better than a given threshold. Our analysis relies on the central limit theorem to approximate the distribution of the combined undesired signal affecting each link of an ad-hoc network as Gaussian. Our analysis shows that employing multiple antenna mobile nodes improves the connectivity of fading ad-hoc networks.

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Document Details

Document Type
Technical Report
Publication Date
Aug 04, 2008
Accession Number
ADA506993

Entities

People

  • H. Jafarkhani
  • H. Yousefizadeh
  • J. Dazemitabar

Organizations

  • University of California, Irvine

Tags

DTIC Thesaurus Topics

  • Ad Hoc Networks
  • Antenna Configurations
  • Communication Channels
  • Communication Systems
  • Gaussian Noise
  • Markov Chains
  • Mesh Networks
  • Modulation
  • Multiple Input Multiple Output
  • Network Topology
  • Networks
  • Probability
  • Random Variables
  • Standards
  • Wireless Communications
  • Wireless Networks

Fields of Study

  • Computer science
  • Engineering

Readers

  • Computer Networking
  • Radio communications and signal processing.
  • Statistical inference.