AffiliationUniv Arizona, Dept Elect & Comp Engn
Univ Arizona, Dept Biomed Engn & Elect & Comp Engn
Keywordsspread spectrum communication
code division multiple access
direct sequence spread spectrum signals
spread spectrum communications
direct sequence SS
compressive detection framework
compressive measurement kernels
DSSS signal structure
noncooperative compressive detection techniques
MetadataShow full item record
PublisherINST ENGINEERING TECHNOLOGY-IET
CitationLiu, Feng; Marcellin, Michael W.; Goodman, Nathan A.; Bilgin, Ali: 'Compressive detection of direct sequence spread spectrum signals', Electronics Letters, 2018, 54, (24), p. 1379-1381, DOI: 10.1049/el.2018.6280 IET Digital Library, https://digital-library.theiet.org/content/journals/10.1049/el.2018.6280
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AbstractIn spread spectrum (SS) communications, the input signal is spread over a wider bandwidth to avoid interference or interception. One of the most common SS techniques is direct sequence SS (DSSS). In this Letter, the authors propose non-cooperative compressive detection techniques for DSSS signals. The proposed compressive detection framework allows the use of random as well as designed measurement kernels. A technique for designing compressive measurement kernels which exploit DSSS signal structure and non-uniform usage of spreading codes is proposed. Theoretical and simulation results are provided to compare the performance of the proposed methods with their conventional counterparts.
VersionFinal accepted manuscript
SponsorsDefense Advanced Research Projects Agency (DARPA) Knowledge Enhanced Compressive Measurements Project (KECoM) [N66001-10-1-4079]
Showing items related by title, author, creator and subject.
Spread Spectrum Signal Detection from Compressive MeasurementsMarcellin, Michael W.; Goodman, Nathan A.; Bilgin, Ali; Lui, Feng; University of Arizona (International Foundation for Telemetering, 2013-10)Spread Spectrum (SS) techniques are methods used to deliberately spread the spectrum of transmitted signals in communication systems. The increased bandwidth makes detection of these signals challenging for non-cooperative receivers. In this paper, we investigate detection of Frequency Hopping Spread Spectrum (FHSS) signals from compressive measurements. The theoretical and simulated performances of the proposed methods are compared to those of the conventional methods.
Compressive Measurement of Spread Spectrum SignalsBilgin, Ali; Liu, Feng; Bilgin, Ali; Marcellin, Michael W.; Vasic, Bane (The University of Arizona., 2015)Spread Spectrum (SS) techniques are methods used in communication systems where the spectra of the signal is spread over a much wider bandwidth. The large bandwidth of the resulting signals make SS signals difficult to intercept using conventional methods based on Nyquist sampling. Recently, a novel concept called compressive sensing has emerged. Compressive sensing theory suggests that a signal can be reconstructed from much fewer measurements than suggested by the Shannon Nyquist theorem, provided that the signal can be sparsely represented in a dictionary. In this work, motivated by this concept, we study compressive approaches to detect and decode SS signals. We propose compressive detection and decoding systems based both on random measurements (which have been the main focus of the CS literature) as well as designed measurement kernels that exploit prior knowledge of the SS signal. Compressive sensing methods for both Frequency-Hopping Spread Spectrum (FHSS) and Direct Sequence Spread Spectrum (DSSS) systems are proposed.
THE CO-EXISTENCE OF SPREAD SPECTRUM RANGING SIGNAL IN INDIAN NATIONAL SATELLITE-1B (INSAT-IB) WITH TV OR SCPC CHANNELSLal, P.M.C.; Palsule, V.S.; Kumar, Pramod; Indian Space Research Organization (International Foundation for Telemetering, 1986-10)Spread Spectrum Systems have the potential of sharing the frequency spectrum with broadcasting, telephony and data communications services due to their low power density signalling. The study of feasibility of co-existence of Direct Sequence Spread Spectrum ranging signal with TV or SCPC carriers in a common satellite transponder is presented in this paper. The suitability of this type of ranging for Indian National Satellite-IB (INSAT-IB) system from Master Control Facility (MCF), Hassan, India has been examined. The mutual interference effects between spread spectrum ranging signal and TV or SCPC services through various sizes of earth stations in INSAT network have been calculated. The study indicates that simultaneous accurate range measurement by spread spectrum technique from control earth station is possible without any significant degradation in signal quality of TV or SCPC services.