2nd International IEEE/Create-Net Conference on Testbeds and Research Infrastructures for the Development of Networks and Communities

Research Article

Creating wireless multi-hop topologies on space-constrained indoor testbeds through noise injection

  • @INPROCEEDINGS{10.1109/TRIDNT.2006.1649191,
        author={Sanjit Krishnan  Kaul and Marco  Gruteser and Ivan  Seskar},
        title={Creating wireless multi-hop topologies on space-constrained indoor testbeds through noise injection},
        proceedings={2nd International IEEE/Create-Net Conference on Testbeds and Research Infrastructures for the Development of Networks and Communities},
        publisher={IEEE},
        proceedings_a={TRIDENTCOM},
        year={2006},
        month={7},
        keywords={},
        doi={10.1109/TRIDNT.2006.1649191}
    }
    
  • Sanjit Krishnan Kaul
    Marco Gruteser
    Ivan Seskar
    Year: 2006
    Creating wireless multi-hop topologies on space-constrained indoor testbeds through noise injection
    TRIDENTCOM
    IEEE
    DOI: 10.1109/TRIDNT.2006.1649191
Sanjit Krishnan Kaul1,*, Marco Gruteser1,*, Ivan Seskar1,*
  • 1: WINLAB, Rutgers University, Rt 1 Tech Center, North Brunswick, NJ 08902-3390, USA
*Contact email: sanjit@winlab.rutgers.edu, gruteser@winlab.rutgers.edu, seskar@winlab.rutgers.edu

Abstract

To evaluate routing protocols on a controlled indoor wireless testbed, the radio range must be compressed so that larger multi-hop topologies can be mapped into a laboratory-size area. We propose noise injection as a more flexible option than hardware attenuation and consider methods for mapping real world wireless network topologies onto the testbed. Our experimental results show that additive white Gaussian noise effectively reduces the radio range, without the need for hardware attenuation and careful shielding of wireless cards. We performed experiments for a free space propagation environment. By selecting node positions through an automated procedure, we were able to create a 5-node/4-hop string topology and a random partially connected 6-node topology in a 8m by 8m area with off-the-shelf IEEE 802.11 hardware.