Enabling delay-sensitive applications over sensor networks using a two-tier architecture and multi-antenna cluster heads

L. Liu, J. F. Chamberland, K. Qaraqe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The timely processing and dissemination of information over wireless sensor networks is a key aspect of their future success. This is especially important for delay-sensitive applications such as detection and estimation. This paper assumes a two-tier architecture for wireless sensor networks where sensor nodes are simple devices equipped with one antenna, and cluster heads are more powerful units endowed with multiple antennas each. The cluster heads collect information from the sensor nodes, process data locally, and then relay pertinent information across the network. This article studies the potential benefits of having multiple antennas at the cluster heads on the data collection and dissemination operations. The focus is on delay-sensitive traffic, and performance is measured in terms of effective capacity. Analysis shows that, for Gaussian channels, having multiple antennas at the receiver results in a power gain, while having multiple antennas at the transmitter provides a statistical gain. In both scenarios, the data rate that a wireless channel can support is increased significantly through the use of multiple antennas at the cluster head. Numerical results confirm that the gains of a multiple-antenna configuration over a single-antenna link are substantial for delay-sensitive applications. This provides support for the two-tier architecture studied in this paper and for cluster heads having multiple antennas.

Original languageEnglish
Title of host publication2007 2nd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, CAMPSAP
PublisherIEEE Computer Society
Pages301-304
Number of pages4
ISBN (Print)9781424417148
DOIs
Publication statusPublished - 1 Jan 2007
Event2007 2nd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, CAMPSAP - St. Thomas, Virgin Islands, U.S.
Duration: 12 Dec 200714 Dec 2007

Publication series

Name2007 2nd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, CAMPSAP

Other

Other2007 2nd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, CAMPSAP
CountryVirgin Islands, U.S.
CitySt. Thomas
Period12/12/0714/12/07

    Fingerprint

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Networks and Communications
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

Liu, L., Chamberland, J. F., & Qaraqe, K. (2007). Enabling delay-sensitive applications over sensor networks using a two-tier architecture and multi-antenna cluster heads. In 2007 2nd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, CAMPSAP (pp. 301-304). [4498025] (2007 2nd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, CAMPSAP). IEEE Computer Society. https://doi.org/10.1109/CAMSAP.2007.4498025