Publication:
Code shift keying based joint radar and communications for EMCON applications

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Authors
Tedesso, Thomas W.
Romero, Ric
Subjects
Radar embedded communications
Digital communications
Signal processing
Estimation
Advisors
Date of Issue
2018-05
Date
Publisher
Elsevier Ltd.
Language
Abstract
Due to the explosion in the demand for broadband wireless services by consumers, wireless network service providers require increased frequency allocations from an already crowded frequency spectrum. In an effort to satisfy the increased frequency spectrum requirements of wireless communications networks, several methods have been proposed to allow communication systems and radars to co-exist within the same bandwidth or adjacent frequency bands while minimizing or preventing mutual interference. Most methods explored in the literature focus on the use of cognitive sensing and dynamic spectrum allocation. Other proposed methods to prevent mutual interference between radar and communications systems focus on waveform design. In this manuscript, a dual function communication and radar system with EMCON applications is investigated that uses Gold or Kasami codes in a code shift keying digital modulation scheme. The use of both binary phase shift keying (BPSK) and quaternary phase shift keying (QPSK) to modulate the code bits is investigated. The communications signal is used as the radar signal to implement a pseudo-random BPSK or QPSK coded radar. The symbol error rate (SER) of the communication system is determined through Monte Carlo simulations and compared to an SER upper bound for M-ary frequency shift keying. The radar signal’s periodic autocorrelation function (PACF) and periodic ambiguity function are also examined demonstrating the schemes potential for use in a low probability of intercept radar application. The radar signal’s characteristics are compared when using pseudo-random BPSK and QPSK modulations.
Type
Article
Description
The article of record as published may be found at http://dx.doi.org/10.1016/j.dsp.2018.05.013
Series/Report No
Department
Electrical and Computer Engineering (ECE)
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Center for Cyber-Warfare at Naval Postgraduate School
Funder
Format
9 p.
Citation
Tedesso, Thomas W., and Ric Romero. "Code shift keying based joint radar and communications for EMCON applications." Digital Signal Processing (2018).
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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