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An analog scrambling scheme which does not expand bandwidth, Part I: Discrete time

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1 Author(s)

The problem of scrambling a discrete-time analog sequence for the purpose of privacy encoding is studied. A large family of linear orthogonal invertible scrambling transformations is described that result in a negligible expansion of bandwidth and can therefore serve as building blocks in a secure communication system.

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Information Theory, IEEE Transactions on  (Volume:25 ,  Issue: 3 )