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Title: Methods and apparatuses for self-generating fault-tolerant keys in spread-spectrum systems

Abstract

Self-generating fault-tolerant keys for use in spread-spectrum systems are disclosed. At a communication device, beacon signals are received from another communication device and impulse responses are determined from the beacon signals. The impulse responses are circularly shifted to place a largest sample at a predefined position. The impulse responses are converted to a set of frequency responses in a frequency domain. The frequency responses are shuffled with a predetermined shuffle scheme to develop a set of shuffled frequency responses. A set of phase differences is determined as a difference between an angle of the frequency response and an angle of the shuffled frequency response at each element of the corresponding sets. Each phase difference is quantized to develop a set of secret-key quantized phases and a set of spreading codes is developed wherein each spreading code includes a corresponding phase of the set of secret-key quantized phases.

Inventors:
; ;
Issue Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1229725
Patent Number(s):
9215587
Application Number:
14/163,723
Assignee:
Battelle Energy Alliance, LLC
Patent Classifications (CPCs):
H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04B - TRANSMISSION
H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04L - TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
DOE Contract Number:  
AC07-05ID14517
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Jan 24
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Moradi, Hussein, Farhang, Behrouz, and Subramanian, Vijayarangam. Methods and apparatuses for self-generating fault-tolerant keys in spread-spectrum systems. United States: N. p., 2015. Web.
Moradi, Hussein, Farhang, Behrouz, & Subramanian, Vijayarangam. Methods and apparatuses for self-generating fault-tolerant keys in spread-spectrum systems. United States.
Moradi, Hussein, Farhang, Behrouz, and Subramanian, Vijayarangam. Tue . "Methods and apparatuses for self-generating fault-tolerant keys in spread-spectrum systems". United States. https://www.osti.gov/servlets/purl/1229725.
@article{osti_1229725,
title = {Methods and apparatuses for self-generating fault-tolerant keys in spread-spectrum systems},
author = {Moradi, Hussein and Farhang, Behrouz and Subramanian, Vijayarangam},
abstractNote = {Self-generating fault-tolerant keys for use in spread-spectrum systems are disclosed. At a communication device, beacon signals are received from another communication device and impulse responses are determined from the beacon signals. The impulse responses are circularly shifted to place a largest sample at a predefined position. The impulse responses are converted to a set of frequency responses in a frequency domain. The frequency responses are shuffled with a predetermined shuffle scheme to develop a set of shuffled frequency responses. A set of phase differences is determined as a difference between an angle of the frequency response and an angle of the shuffled frequency response at each element of the corresponding sets. Each phase difference is quantized to develop a set of secret-key quantized phases and a set of spreading codes is developed wherein each spreading code includes a corresponding phase of the set of secret-key quantized phases.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {12}
}

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