Information theory aspects of spread-spectrum communications

A novel definition of a spread-spectrum system as a communications system in which the Fourier bandwidth is much greater than the Shannon bandwith (the number of dimensions of signal space used per second) is proposed. Six different communication systems are analyzed in terms of this definition. It...

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Bibliographic Details
Published inProceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) pp. 16 - 21 vol.1
Main Author Massey, J.L.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1994
Subjects
Bandwidth
Baseband
Capacity planning
Communication systems
Electromagnetic compatibility
Information theory
Passband
Signal processing
Spread spectrum communication
Stochastic processes
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Summary:A novel definition of a spread-spectrum system as a communications system in which the Fourier bandwidth is much greater than the Shannon bandwith (the number of dimensions of signal space used per second) is proposed. Six different communication systems are analyzed in terms of this definition. It is shown that there is a fundamental difference between the bandwidth expansion due to coding and due to "spectrum spreading". It is further shown that spectrum spreading plays no role in increasing the capacity of the system, but can perform other useful roles such as providing low probability of interception of the signal, good electromagnetic compatibility, and a multiple-access capability.< >
ISBN:0780317505
9780780317505
DOI:10.1109/ISSSTA.1994.379621