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On the Structure of Optimal Real-Time Encoders and Decoders in Noisy Communication

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1 Author(s)
Teneketzis, D. ; Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI

The output of a discrete-time Markov source must be encoded into a sequence of discrete variables. The encoded sequence is transmitted through a noisy channel to a receiver that must attempt to reproduce reliably the source sequence. Encoding and decoding must be done in real-time and the distortion measure does not tolerate delays. The structure of real-time encoding and decoding strategies that jointly minimize an average distortion measure over a finite horizon is determined. The results are extended to the real-time broadcast problem and a real-time variation of the Wyner-Ziv problem

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Information Theory, IEEE Transactions on  (Volume:52 ,  Issue: 9 )