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<h2>An Integrated Multi-Layer Wireless LAN Testbed</h2>
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<h3>Summary</h3>
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<p>In this project CWINS has been funded to purchase equipment that will significantly enhance its research activities in wireless networks for multi-media applications.</p>

    <p>The principle feature of this equipment enhancement is an experimental wireless LAN testbed that will be used to serve as a test environment for multi-layer design and performance monitoring. In this testbed, researchers working at all protocol layers of the network will conduct their research to evaluate the impact of wireless broadband access on the design and performance analysis. Multimedia services such as voice, text and image streams will be provided to terminals dispersed over the geographical area covered by the testbed.</p>

    <p>The planned equipment includes a network analyzer, spectrum analyzer, and RF power meter for physical layer scenario development up to 50GHz, which includes all bands currently considered for UWB systems. Other planned equipment includes wireless access points, a central router and switch, network management and monitoring software, laptop computers, PDAs, wireless LAN IP phones, and head-mounted displays as well as a traffic generator and protocol analyzers for packet generation and performance monitoring. The wireless LAN Network Interface Cards (NICs) include IEEE 802.11 as well as Bluetooth cards for both laptop computers and PDAs.</p>


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  <img src="../images/geolocation/multilayer-image002.gif" alt="An Integrated Multi-Layer Wireless LAN Testbed" />
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<h3>Principal Investigators</h3>
<ul>
<li>Kaveh Pahlavan (CWINS)</li>
<li>Emmanuel Agu (WPI - Computer Science Dept.)</li>
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<h3>Sponsor</h3>
<ul>National Science Foundation (NSF)  GRANT NO. CISE-0303592</ul>

<h3>Duration</h3>
<ul>September 2003 - August 2005</ul>

<h3>Publications</h3>
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  <li>A. Hatami and K. Pahlavan, "Comparative statistical analysis of indoor positioning using empirical data and indoor radio channel models," Consumer communications and networking conference, IEEE CCNC 2006.</li>
  <li>Mohammad Heidari, MS, 2005, <a href="http://www.wpi.edu/Pubs/ETD/Available/etd-050405-144528/">A Test-bed for Real-time Performance Evaluation of Indoor Geolocation Systems in Laboratory Environment</a>.</li>
  <li>Ahmad Hatami, PhD, 2006, <a href="http://www.wpi.edu/Pubs/ETD/Available/etd-053106-160141/">Application of Channel Modeling for Indoor Localization Using TOA and RSS</a>.</li>
    <li>M. Heidari and K. Pahlavan, "Performance Evaluation of Indoor Geolocation Systems Using PROPSim Hardware and Ray Tracing Software", IWWAN, Oulu, Finland, June, 2004.</li>
    <li>M. Heidari and K. Pahlavan, "A Testbed for Real-Time Performance Evaluation of Indoor Geolocation Systems", Wireless and Microwave Technology Conference, WAMI, April, 2004.</li>
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