We apply coset codes to adaptive modulation in fading channels. Adaptive modulation is a powerful technique to improve the energy efficiency and increase the data rate over a fading channel. Coset codes are a natural choice to use with adaptive modulation since the channel coding and modulation designs are separable. Therefore, trellis and lattice codes designed for additive white Gaussian nois...

The problem of performing iterative detection (ID)—a technique originally introduced for the decoding of turbo codes—for systems having parametric uncertainty has received relatively little attention in the open literature. In this paper, the problem of adaptive ID (AID) for serial and parallel concatenated convolutional codes (SCCC’s and PCCC’s or turbo codes) in the presence of carrier-phase ...

Orthogonal Variable Spreading Factor (OVSF) codes would give variable data rate transmissions for different bandwidth supplies in Wideband CDMA (WCDMA) networks. These OVSF codes are used for the channelization of codes in WCDMA. In WCDMA, effective utilization of OVSF codes has become an active area of research as the number of codes is very limited. It is a fact that the successor and predece...

This study assesses factors influencing Internal Audit Quality (IAQ) in Greece. Hand-collected data were obtained from 2013 and 2014 annual financial reports from companies such as food industries, beverage –and their subcategoriesindustries as well as fishing and distillation, listed in Athens Stock Exchange (ASE). Previous literature was chosen in order to highlight significant independent va...

The most of well-known algorithms on the basis of the "past" (processed) samples make the local properties of the image more precise and adjust some own parameters. At decoding of the image on the basis of restored samples the same decisions are taken. It is the classical adaptive scheme. In the offered proadaptive approach for tuning parameters of algorithm the prolongation of a signal is used...

This paper describes a new method of data encoding which may be used in various modern digital, computer and telecommunication systems and devices. The method permits the compression of data for storage or transmission, allowing the exact original data to be reconstructed without any loss of content. The method is characterized by the simplicity of implementation, as well as high speed and comp...

This paper describes a proposed solution for the visual code marker detection problem which is one example of object detection applications in digital image processing. The proposed approach is based on performing first image segmentation using adaptive local thresholding. Then regions of potential corners are derived using the region counting algorithm and the spatial characteristics of a corn...

We provide a Matlab package p1afem for an adaptive P1-finite element method (AFEM). This includes functions for the assembly of the data, different error estimators, and an indicator-based adaptive mesh-refining algorithm. Throughout, the focus is on an efficient realization by use of Matlab built-in functions and vectorization. Numerical experiments underline the efficiency of the code which i...

Many object-oriented information systems share an architectural style that emphasizes flexibility and dynamically configurable. Business rules are stored in a database instead of in code. The object model that the user cares about is part of the database, and the object model of the code is just an interpreter of the users’ object model. We call these systems “Adaptive Object-Models”, because t...

The high spatial resolution needed in self-consistent particle simulations can be achieved using adaptive mesh refinement techniques (AMR). In this paper the code SMOVE which is based on such an adaptive mesh is presented. It allows for accurate simulations with a high spatial resolution in the vicinity of the particle bunches. Furthermore, it offers the possibility of simulating long accelerat...