Zoran Bojkovic

Network Selection Algorithm for Heterogeneous Wireless Environment

Service delivery in a heterogeneous wireless environment requires the selection of an optimal radio access network. In order that users could be always connected through the optimal network, it is necessary to develop an adequate model for its selection. This paper presents the proposal of optimal network selection algorithm in wireless heterogeneous environment that is based on TOPSIS method when solving the multicriteria analysis. The wireless networks in this model represent the alternatives, while the network parameters (available bandwidth, quality of service level, security level, data transfer cost) are considered as the criteria for determining the optimal network.

Introduction to Multimedia Communications: Applications, Middleware, Networking

A comprehensive resource on multimedia communications. Covers recent trends and standardization activities in multimedia communications, such as layered structures, underlying theories and the current best design techniques. Describes the convergence of various technologies including communications, broadcasting, information technology, and home electronics, and emerging new communication services and applications resulting from the growth of the Internet and wireless technologies. Please go to www-ee.uta.edu/dip for additional information.

Wireless Multimedia Communications: Convergence, DSP, QoS, and Security

With the rapid evolution of multimedia communications, engineers and other professionals are generally forced to hoard a plethora of different texts and journals to maintain a solid grasp on essential ideas and techniques in the field. Wireless Multimedia Communications provides researchers and students with a primary reference to help readers take maximum advantage of current systems and uncover opportunities to propose new and novel protocols, applications, and services. Extract the Essentials of System Design, Analysis, Implementation A complete technical reference, the text condenses the essential topics of core wireless multimedia communication technologies, convergence, QoS, and security that apply to everything from networking to communications systems, signal processing, and security. From extensive existing literature, the authors distill the central tenets and primary methods of analysis, design, and implementation, to reflect the latest technologies and architectural concepts. The book addresses emerging challenges to inform the system standardization process and help engineers combat the high error rates and stringent delay constraints that remain a significant challenge to various applications and services. Keep Pace with Detailed Techniques to Optimize Technology The authors identify causes of information loss in point-to-point signal transmission through wireless channels, and then they discuss techniques to minimize that loss. They use examples that illustrate the differences in implementing various systems, ranging from cellular voice telephony to wireless Internet access. Each chapter has been carefully organized with the latest information to serve dual purposes as an easy-to-reference guide for professionals and as a principal text for senior-level university students.

Wireless Multimedia Communication Systems: Design, Analysis, and Implementation

Rapid progress in software, hardware, mobile networks, and the potential of interactive media poses many questions for researchers, manufacturers, and operators of wireless multimedia communication systems. Wireless Multimedia Communication Systems: Design, Analysis, and Implementation strives to answer those questions by not only covering the underlying concepts involved in the design, analysis, and implementation of wireless multimedia communication systems, but also by tackling advanced topics such as mobility management, security components, and smart grids. Offering an accessible treatment of the latest research, this book: Presents specific wireless multimedia communication schemes that have proven to be useful Discusses important standardization processing activities regarding wireless networking Includes wireless mesh and multimedia sensor network architectures, protocols, and design optimizations Highlights the challenges associated with meeting complex connectivity requirements Contains numerous figures, tables, examples, references, and a glossary of acronyms Providing coverage of significant technological advances in their initial steps along with a survey of the fundamental principles and practices, Wireless Multimedia Communication Systems: Design, Analysis, and Implementation aids senior-level and graduate-level engineering students and practicing professionals in understanding the processes and furthering the development of todays wireless multimedia communication systems.

Internet Protocol Multimedia Subsystem for Mobile Services

This work describes the support for Internet protocol multimedia subsystem (IMS) in mobile communication services. An architecture for accessing multimedia services together with IMS layered service is presented. IMS within universal mobile telecommunication system (UMTS) core network is analyzed, too. The second part deals with an approach for the interoperability between IMS and Web services within the IMS domain through the session management techniques, based on the existing session initiation protocol (SIP) management mechanism.

Face Detection Approach in Neural Network Based Method for Video Surveillance

Neural networks are adaptive information processing systems that offer attractive solutions for video surveillance. This application aims at identifying particular patterns. Also, MPEG-4 standard profiling strategy in facial animation guarantees that the standard can provide adequate solutions for video surveillance. The main goal of this presentation is to provide face detection for video surveillance using neural network based method. After providing the corresponding architecture for face detection, the emphasize is on the detector which is trained with multilayer back propagation neural networks. Three different face representations are taken into account, i.e. pixel representation, partial profile representation and eigenface representation. Based on this, three independent sub-detectors are generated. The detection rates are measured. The circle at about 94% indicates the position where the neural network achieves the optimal performance

Network selection in heterogeneous environment: A step toward always best connected and served

Service delivery in a heterogeneous wireless environment requires the selection of an optimal access network. In order for users to be always connected through the optimal available network, it is necessary to develop an adequate technique for its selection. This paper deals with network selection concept as a perspective approach to the always best connected and served paradigm in heterogeneous wireless environment. It provides a survey on fundamental aspects of network selection process and mainly focuses on decision making mechanisms. After presenting the related standards, the perspective vertical handover approaches from the open literature are analyzed and compared. The paper concludes with a case study related to the influence of traffic conditions on network selection, which reveals the advantages of the always best connected and served concept.

Emerging of Mobile Ad-Hoc Networks and New Generation Technology for Best QOS and 5G Technology

Enhancing in performance, strong bandwidth utilization and merging of MANET (3G) and 4G make a plate- form to get best Quality of services. Purpose of this research is to understand the functioning of ad hoc networks and implement proposed routing protocols for mobile ad hoc networks. After analyzing the existing QOS framework with respect to the dynamic and rapidly changing behavior of ad hoc networks. This research attempts to present some of the fundamental routing issues such as decentralization, bandwidth, MANETS delay in DSR and AODV, data delivery ratio in intermediate nodes in static and dynamic position and resource constrained in ad hoc network. Routing of data packets between source to destination is difficult task, So to overcome on these problems we have to extend and evaluate proposed routing protocols (AODV and DSR) suitable for mobile ad hoc networks for best QoS, In order to prove its correctness and efficiency evaluation of the proposed protocols should be done theoretically and implemented through simulation using OPNET simulator. The research will compares the statistics of ad hoc routing protocols by different researches with different simulating tools. 5G can be achieved by making a revolutionary attempt on the basis of this research ideology (merging of ad hoc and cellular technology under 4G umbrella with user centric concept wirelessly with multi terminals at a time), which will assure optimization in the next generation technology.

H.264/AVC standard: A proposal for selective intra- and optimized inter-prediction

This paper seeks to provide a selective intra-prediction and optimized inter-prediction methods in H.264/AVC standard. In order to reduce the temporal and spatial redundancy more effectively, motion compensation uses variable block sizes, while directional intra-prediction investigates all available coding modes to decide the best one. When the rate-distortion (R-D) optimization technique is used, an encoder finds the coding mode having minimum R-D cost. Due to the large number of coding modes combinations, the decision process requires extremely high computation. To reduce the complexity, selective intra-prediction and optimized inter-prediction method for Standard Definition and High Definitions test sequences is proposed, when P and B pictures are analyzed. Simulation results show that the coding time is reduced more than 15% in average, depending on Quantization Parameter (QP) values, when reducing the number of intra- and inter-candidate modes. However, there is negligible loss in term signal-to-noise ratio (SNR), until bit rate values slightly fluctuate depending on QP values.

Invariant image recognition experiment with Trace transform

This paper presents the deals with the problem of invariant image recognition. The design of invariant image recognition system based on the Trace transform is presented. The basics of Trace transform, functional and triple features is briefly presented. Developed invariant image recognition system performance was evaluated in experiments with recognition of original images and their different modifications.