We show that, in any typical transform coding systems, there is always a linear relationship between the coding bit rate and the percentage of zeros among the quantized transform coefficients, denoted by . Based on Shannon’s source coding theorem, a theoretical justification is provided for this linear source model. The physical meaning of the model parameter is also discussed. We show that it ...

A new measure called average code word length of order is defined and its relationship with Renyi's entropy of order is discussed. Using some coding theorems are proved under the condition Refer ences

We present a noiseless source coding problem in a broadcast environment and supply a simple solution to this problem. A transmitter wishes to transmit a binary random vector to receivers, where receiver is only interested in the component A source encoding is a binary sequence which is chosen by the transmitter. The expected time at which the receiver determines (with probability one) is denote...

Information theoretic security characterizes the fundamental limitations of unconditional security against computationally unbounded adversaries. In this chapter, secure distributed compression in the presence of eavesdropper(s) is considered from the information theoretic security perspective. Basic models and fundamental results are summarized for lossless and lossy source compression. Distri...

The separation of the information in a vector into order (a permutation) and value (a multiset) is studied. We formulate rate-distortion problems in which order is irrelevant, for which we give conclusive results in cases where the set size approaches infinity. Conversely, we present a distortion measure on partial orders and source coding techniques based on partial orders. Multiple partial or...

The fundamental limits of “systematic” communication are analyzed. In systematic transmission, the decoder has access to a noisy version of the uncoded raw data (analog or digital). The coded version of the data is used to reduce the average reproduced distortion D below that provided by the uncoded systematic link and/or increase the rate of information transmission. Unlike the case of arbitra...

Format: ePub / PDF / Kindle This book provides a global understanding of source coding with an overview of practical coding schemes for speech, music and images. The first section covers background, theoretical material. It shows how source coding...

We consider a simple communication network model and focus on a single source-destination pair to exploit the interconnection between Source Coding and Parallel Routing. We consider a Distortion Measure that combines signal reconstruction fldelity with network delay and we pose the problem of minimizing this Measure by jointly choosing the Encoder Parameters and the Routing Parameters. We look ...

The method of speech coding CELP is extensively used in much voice communication-, multimedia-, video conference and other systems. There are a lot of papers related to CELP coding characteristics improvement for a better speech quality after decoding. Most of the papers are dedicated to lower the rate of CELP coded speech transmission. One problem related to low rate CELP speech transmission w...