NDLI: A Robust Ratio-Threshold Technique to Mitigate Tone and Partial Band Jamming in Coded MFSK Systems

Content Provider	IEEE Xplore Digital Library
Author	Viterbi, A. J.
Copyright Year	1982
Description	Author affiliation: M/A-COM LINKABIT, Inc., San Diego, CA 92121 (Viterbi, A. J.)
Abstract	It is well known [Refs 1, 2] that a tone or partial-band noise jammer can so choose his jamming strategy as to cause the bit error rate of a frequency-hopped MFSK transmission system, to be an inverse linear function of E = (W/R)/(J/S), where W is the total available bandwidth available to the communicator, R is the bit rate and J/S is the jammer-to-signal power margin. This situation can be greatly improved by the use of coding, but with hard decisions, performance is still significantly worse than in additive Gaussian noise, unless sufficient time diversity (hops/bit) are employed to thwart such jammers - but at a cost in performance due to coherence loss. This paper investigates use of a simple robust technique which generates a "quality" bit based on the ratio of the maximum filter output to the second largest filter output. This improves coded system performance by as much as 6 dB for a tone jammer and makes lower redundancy (time diversity) more desirable. Performance is determined for both tone and partial band noise jamming and the two are shown to be almost equal and only slightly worse than for full-band Gaussian noise in a coded system.
File Size	602373
File Format	PDF
DOI	10.1109/MILCOM.1982.4805943
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1982-10-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Jamming Gaussian noise Noise robustness Performance loss Filters Bit error rate Frequency Bandwidth Bit rate Additive noise
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in