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Title: Design, Implementation, and Evaluation of a Hybrid DS/FFH Spread-Spectrum Radio Transceiver

Abstract

In recent years there has been great interest in using hybrid spread-spectrum (HSS) techniques for commercial applications, particularly in the Smart Grid, in addition to their inherent uses in military communications. This is because HSS can accommodate high data rates with high link integrity, even in the presence of significant multipath effects and interfering signals. A highly useful form of this transmission technique for many types of command, control, and sensing applications is the specific code-related combination of standard direct-sequence modulation with "fast" frequency-hopping, denoted hybrid DS/FFH, wherein multiple frequency hops occur within a single data-bit time. In this paper, we present the efforts carried out at Oak Ridge National Laboratory toward exploring the design, implementation, and evaluation of a hybrid DS/FFH spread-spectrum radio transceiver using a single Field Programmable Gate Array (FPGA). The FPGA allows the various subsystems to quickly communicate with each other and thereby maintain tight synchronization. We also investigate various hopping sequences against robustness to interference and jamming. Experimental results are presented that show the receiver sensitivity, radio data-rate/bit-error evaluations, and jamming and interference rejection capabilities of the implemented hybrid DS/FFH spread-spectrum system under widely varying design parameters.

Authors:
 [1];  [1];  [1];  [2]
  1. ORNL
  2. Pacific Northwest National Laboratory (PNNL)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
Work for Others (WFO)
OSTI Identifier:
1162080
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: Military Communications Conference (MILCOM'14), Baltimore, MD, USA, 20141006, 20141008
Country of Publication:
United States
Language:
English
Subject:
Hybrid spread-spectrum; direct-sequence; frequency-hopping; interference; jamming; data rate; hopping sequence; Field Programmable Gate Array (FPGA); direct digital synthesizer; receiver sensitivity

Citation Formats

Olama, Mohammed M, Killough, Stephen M, Kuruganti, Teja, and Carroll, Thomas E. Design, Implementation, and Evaluation of a Hybrid DS/FFH Spread-Spectrum Radio Transceiver. United States: N. p., 2014. Web.
Olama, Mohammed M, Killough, Stephen M, Kuruganti, Teja, & Carroll, Thomas E. Design, Implementation, and Evaluation of a Hybrid DS/FFH Spread-Spectrum Radio Transceiver. United States.
Olama, Mohammed M, Killough, Stephen M, Kuruganti, Teja, and Carroll, Thomas E. 2014. "Design, Implementation, and Evaluation of a Hybrid DS/FFH Spread-Spectrum Radio Transceiver". United States. https://www.osti.gov/servlets/purl/1162080.
@article{osti_1162080,
title = {Design, Implementation, and Evaluation of a Hybrid DS/FFH Spread-Spectrum Radio Transceiver},
author = {Olama, Mohammed M and Killough, Stephen M and Kuruganti, Teja and Carroll, Thomas E.},
abstractNote = {In recent years there has been great interest in using hybrid spread-spectrum (HSS) techniques for commercial applications, particularly in the Smart Grid, in addition to their inherent uses in military communications. This is because HSS can accommodate high data rates with high link integrity, even in the presence of significant multipath effects and interfering signals. A highly useful form of this transmission technique for many types of command, control, and sensing applications is the specific code-related combination of standard direct-sequence modulation with "fast" frequency-hopping, denoted hybrid DS/FFH, wherein multiple frequency hops occur within a single data-bit time. In this paper, we present the efforts carried out at Oak Ridge National Laboratory toward exploring the design, implementation, and evaluation of a hybrid DS/FFH spread-spectrum radio transceiver using a single Field Programmable Gate Array (FPGA). The FPGA allows the various subsystems to quickly communicate with each other and thereby maintain tight synchronization. We also investigate various hopping sequences against robustness to interference and jamming. Experimental results are presented that show the receiver sensitivity, radio data-rate/bit-error evaluations, and jamming and interference rejection capabilities of the implemented hybrid DS/FFH spread-spectrum system under widely varying design parameters.},
doi = {},
url = {https://www.osti.gov/biblio/1162080}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 2014},
month = {Wed Jan 01 00:00:00 EST 2014}
}

Conference:
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