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A source coding problem for sources with additional outputs to keep secret from the receiver or wiretappers (Corresp.)

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1 Author(s)

A new source coding problem is considered for a one-way communication system with correlated source outputs{XY}. One of the source outputs, i.e.,{X}, must be transmitted to the receiver within a prescribed distortion tolerance as in ordinary source coding. On the other hand, the other source output, i.e.,{Y}, has to be kept as secret as possible from the receiver or wiretappers. For this case the equivocation-distortion functionGamma ast(d)and the rate-distortion-equivocation functionRast (d,e)are defined and evaluated. The former is the maximum achievable equivocation of{Y}under the distortion tolerancedfor{X}, and the latter is the minimum rate necessary to attain both the equivocation toleranceefor{Y}and the distortion tolerancedfor{X}. Some examples are included.

Published in:

Information Theory, IEEE Transactions on  (Volume:29 ,  Issue: 6 )

Date of Publication:

Nov 1983

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