Cooperation for Transmission Scheduling in Wireless Networks

Abstract

We study the use of node cooperation as a way to improve performance in multiple-source, single-destination wireless networks that use scheduled access as the channel-access method. Unlike many other studies of scheduled access, which are based on the use of a collision channel, we use a physical channel model that incorporates other-user interference, fading, and background noise. The characteristics of such channels are exploited to enable the successful reception of multiple packets simultaneously. Our primary performance measure is throughput, which is the average number of packets that are successfully received by the destination per time slot. First, we study the performance of transmission schedules, which depends on channel fading, receiver noise, and interference. We then show that a cooperative strategy, based on the introduction of a relay to assist unsuccessful source nodes, can improve the throughput.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2009
Accession Number
ADA521280

Entities

People

  • Anthony Ephremides
  • Gam D. Nguyen
  • Jeffrey E. Wieselthier
  • Sastry Kompella

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Algorithms
  • Communication Networks
  • Communication Systems
  • Cooperation
  • Engineering
  • Far Field
  • Multiple Access
  • Multiple Input Multiple Output
  • Network Topology
  • Networks
  • Probability
  • Random Variables
  • Scheduling (Production)
  • Topology
  • Wireless Communications
  • Wireless Networks
  • Wireless Sensor Networks

Fields of Study

  • Computer science

Readers

  • Computer Networking
  • Radio communications and signal processing.
  • Systems Analysis and Design