Statistical Mechanics of Source Coding with a Fidelity Criterion

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Strong converses in source coding relative to a fidelity criterion

Abstracf -Two strong converses are obtained for an abstract alphabet stationary ergodic source coded relative to an appropriate fidelity criterion. It is shown that given a distortion rate point ( D , R ) , which lies below the rate distortion curve, 1) block codes that operate at rate level R must encode sample source blocks at a rate exceeding D with probability tending to one as block length...

متن کامل

On tree coding with a fidelity criterion

This paper reexamines Jelinek’s proof that tree codes can be used to approach the rate-distortion bound. It is shown that the branching process used in Jelinek’s proof is not a (strict-sense) branching process (SSBP) when the source is asymmetric. Branching processes with random environments (BPWRE) are introduced and used to extend the proof to general discrete-time memoryless sources. The the...

متن کامل

Statistical Mechanics of Optimal Networked Source Coding

We consider a large scale network of autonomous sensors each equipped with a local encoder and a local decoder. The nodes collaborate to reproduce a distributed source using a multiple description code (MDC). Each local encoder is a side encoder of MDC, producing one of the many descriptions and broadcasts its encoding to all its neighbors via an unreliable network. Each local decoder reconstru...

متن کامل

Hierarchical Guessing with a Fidelity Criterion

In an earlier paper, we studied the problem of guessing a random vector X within distortion D, and characterized the best attainable exponent E(D; ) of the th moment of the number of required guesses G(X) until the guessing error falls below D. In this paper, we extend these results to a multi-stage, hierarchical guessing model, which allows for a faster search of a codeword vector at the encod...

متن کامل

Zero-Error Source Coding with Maximum Distortion Criterion

Let finite source and reproduction alphabets X and Y and a distortion measure d : X ×Y → [0,∞) be given. We study the minimum asymptotic rate required to describe a source distributed over X within a (given) distortion threshold D at every sample. The problem is hence a min-max problem, and the distortion measure is extended to vectors as follows: for x ∈ X, y ∈ Y, d(x, y) = maxi d(xi, yi). In ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Progress of Theoretical Physics Supplement

سال: 2005

ISSN: 0375-9687

DOI: 10.1143/ptps.157.197