Home // ICWMC 2014, The Tenth International Conference on Wireless and Mobile Communications // View article

Investigating Bit Error Patterns for Radar Pulse Detection in IEEE 802.11

Authors:
Claudio Pisa
Andres Garcia Saavedra
Douglas Leith

Keywords: Radar, 802.11, Interference management

Abstract:
The shift towards use of the 5~GHz band by WiFi networks comes with the requirement that these networks coexist safely with existing systems using that band, e.g., meteorology, aeronautics or military radars. Regulatory bodies are mandating the implementation of Dynamic Frequency Selection (DFS) in wireless communication protocols to (i) detect radar operations and (ii) move away from channels populated by these. Conventional approaches to implementing such mechanisms, however, can result in massive underutilization of the radio channel since the radio must be kept silent for a large amount of time in order to ensure sufficient detection accuracy. This inevitably impacts the throughput capacity of the wireless network. In this paper, we consider whether bit-error patterns at the receiver of a WiFi link can be used for radar detection. In our experimental study, we adopt a pair-packet transmission technique to mitigate the interference inherent to the 802.11 protocol due to, e.g., other contending stations. Our initial results show that the observation of bit-error patterns due to radar interferences is indeed possible, establishing that the potential exists to design unobtrusive detection mechanisms that work transparently with existing network protocols without loss of network capacity.

Pages: 164 to 167

Copyright: Copyright (c) IARIA, 2014

Publication date: June 22, 2014

Published in: conference

ISSN: 2308-4219

ISBN: 978-1-61208-347-6

Location: Seville, Spain

Dates: from June 22, 2014 to June 26, 2014