Accession Number:

ADA439230

Title:

Simulation of Wireless Propagation and Jamming in a High-Rise Building

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

2005-09-01

Pagination or Media Count:

91.0

Abstract:

Wireless Local Area Networks WLANs extend the usage of wired LANs from specific places within a building to many mobile users, whether they are in the building or outside. The wireless data is not only used by authorized users but also might be intercepted and altered by unauthorized users. Therefore, the power of the transmitter is kept as low as possible to make it difficult for unauthorized users to intercept the signal. In the absence of interception, adversaries might attempt to jam the signal so that the network cannot operate properly. The purpose of this study is to investigate the effects of noise jamming against a WLAN in a high-rise building. The building model was created by Rhino, a well-known, Windows-based computer drawing software. The jamming effects are simulated using the Urbana computer program. The LAN transmitter operates with an omni-directional antenna and 100 mW of power. The noise jammer has variable power levels of 10 W and 100 W and uses a directional antenna. The signal-to-jam ratio SJR is computed for several floors in the building to determine if the jammer will disrupt the WLAN.

Subject Categories:

  • Computer Programming and Software
  • Computer Systems Management and Standards
  • Structural Engineering and Building Technology
  • Radio Countermeasures
  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE