This paper describes some of the most promising segment-based coding techniques which have been investigated in the course of the MPEG-4 standardization process. Padding methods aim at extending arbitrarily shaped image segments to a regular block grid such that common hybrid block-based coding techniques can be applied. A simple and efficient padding technique employing low-pass extrapolation ...

This paper describes a video coding algorithm that combines new ideas in motion estimation wavelet l ter design and wavelet based coding techniques A mo tion compensation technique using image warping and over lapped block motion compensation OBMC is employed to reduce temporal redundancies in a given image sequence This combined motion model has the advantage of repre senting more complex moti...

The 5th generation (5G) mobile communication system requires high throughput for high quality user experience. In this paper, a novel Hybrid Automatic Repeat Request (HARQ) scheme based on packet coding is proposed. The idea is that a parity block is transmitted when code block error rate (CBER) of all turbo code blocks of transmission packet is less than or equal to the threshold of P0 and gre...

In this letter, a switched transmission technique is presented that can provide the orthogonal frequency division multiplexing (OFDM) systems with additional diversity gain. The space-time block coding (STBC) and space-frequency block coding (SFBC) are considered for the transmission of the OFDM signals. A proper coding scheme is selected based on the estimated normalized delay spread and norma...

We address the biometric authentication setup where the outcomes of biometric observations received at the verification stage are compared with the sample data formed at the enrollment stage. The result of comparison is either the acceptance or the rejection of the identity claim. The acceptance decision corresponds to the case when the analyzed values belong to the same person. A possible solu...

When certain control parameters of nervous cell models are varied, complex bifurcation structures develop in which the dynamical behaviors available appear classified in blocks, according to criteria of dynamical likelihood. This block structured dynamics may be a clue to understand how activated neurons encode information by firing spike trains of their action potentials.

The Layered Coding Transport (LCT) Building Block provides transport level support for reliable content delivery and stream delivery protocols. LCT is specifically designed to support protocols using IP multicast, but it also provides support to protocols that use unicast. LCT is compatible with congestion control that provides multiple rate delivery to receivers and is also compatible with cod...

Block truncation coding (BTC) divides an image into blocks having given size and then encodes each block by two representative gray levels and a bit-pattern. In this work a modi"ed scheme of BTC is proposed where the computed representative gray levels are the bias and the contrast in each block. Secondly, instead of determining bit-pattern for each block, an optimum bit-pattern is selected fro...

Demonstrates that the current optional coding scheme does provide material gains, refuting claims made in C802.16a-02/59. [Results forthcoming] Purpose Defend BTC from claims made in C802.16a-02/59 Notice This document has been prepared to assist IEEE 802.16. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this doc...

Over the last couple of years a number of spacetime block codes have been proposed for use in multiple transmit antennas systems. In this article we propose a method to extend any space-time code constructed for m transmit antennas to m p transmit antennas through GroupCoherent Codes (GCC). GCC make use of very limited feedback from the receiver (as low as one bit). In particular the scheme can...