On the capacity of the wiretap channel with generalized feedback

It is well-known that feedback does not increase the capacity of point-to-point memoryless channels, however, its effect in secure communications is not fully understood yet. In this work, an achievable scheme for the wiretap channel with generalized feedback -based on joint source-channel coding- i...

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Bibliographic Details
Main Authors: Bassi, German, Piantanida, Pablo, Shamai, Shlomo
Format: Conference Proceeding
Language:English
Subjects:
Channels
Decoding
Encoding
Feedback
Gaussian
Information theory
Joints
Manganese
Noise
Noise measurement
Zinc
Online Access:Request full text
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Summary:It is well-known that feedback does not increase the capacity of point-to-point memoryless channels, however, its effect in secure communications is not fully understood yet. In this work, an achievable scheme for the wiretap channel with generalized feedback -based on joint source-channel coding- is presented. This scheme recovers previous results, thus it can be seen as a generalization and unification of several results in the field. Additionally, the Gaussian wiretap channel with noisy feedback is analyzed, and the scheme achieves positive secrecy rates even in unfavorable situations where the eavesdropper experiences a much better channel than the legitimate user.
ISSN:2157-8095
2157-8117
DOI:10.1109/ISIT.2015.7282636