Home // ICSNC 2011, The Sixth International Conference on Systems and Networks Communications // View article
Authors:
Martin Brandl
Karlheinz Kellner
Keywords: spread spectrum, chirp, matched filter, FPGA design
Abstract:
For data transmission in heavily distorted indoor environments, chirp-based spread spectrum systems operating in the 2.45 GHz ISM band are well applicable. The robustness of spread spectrum systems against narrow band jammers is given by their compression gain, which is defined by the time-bandwidth product of the spreading signal. Using chirp matched filter systems, jammers can pass through the receiver filter and are only weighted by its transfer function. Dividing the receiver chirp filter into time (equivalent to frequency) intervals, a jammer can be suppressed by switching off the corresponding frequency interval, leading to an increased jamming robustness. Due to its simplicity, this is suitable even for low cost systems. Theoretical and experimental results prove the capability of the method.
Pages: 72 to 75
Copyright: Copyright (c) IARIA, 2011
Publication date: October 23, 2011
Published in: conference
ISSN: 2163-9027
ISBN: 978-1-61208-166-3
Location: Barcelona, Spain
Dates: from October 23, 2011 to October 29, 2011