Abstract: Ultra Wideband or UWB is a technique based on transmitting very-short-duration pulses, often of duration of only nanoseconds or less. This allows it to deliver data rates in excess of 100 Mbit/s, while using a small amount of power and operating in the same bands as existing communication systems without producing significant interference.

UWB technology offers great opportunities for short-range wireless multimedia communications and networking. Unlike conventional wireless systems, which use narrowband modulated carrier waves to transmit information, Ultra-Wideband transmits over a wide band of radio spectrum, using a series of very narrow and low-power pulses. The combination of broader spectrum, lower power and pulsed data means that Ultra-Wideband causes significantly less interference than conventional narrowband radio solutions while safely coexisting with other wireless technologies in the market.

The distinct advantages of UWB communication that make it a strong candidate for future communication systems (both military and civilian) are: exceptional multi-path immunity, potential for substantially less power consumption than conventional systems, inherently secure, highly resistant to interference and exceptionally high spatial capacity.

The talk will start with the basics of UWB and go on to discuss the current state of the art in UWB communications. The talk will also cover transceiver design issues for UWB systems. The presentation will end with some future directions related to the research, development and killer applications for UWB systems.

PLENARY LECTURE 2

Solving Network Optimisation Problems

Professor Milos Seda

Brno University of Technology

Faculty of Mechanical Engineering

Institute of Automation and Computer Science

Czech Republic

Email: seda@fme.vutbr.cz

Abstract: Finding the shortest path between two positions or between all pairs of points is a fundamental problem in transportation, routing, robot motion planning, and communications applications.

The second application area, investigated here, is focused on problems of finding minimal networks connecting a set of given points in the plane using either only straight connections between pairs of points (minimum spanning tree) or allowing the addition of auxiliary points to the set to obtain shorter spanning networks (minimum Steiner tree).

The purpose of this presentation is also to introduce special geometric structures of computational geometry – Voronoi diagram and Delaunay triangulation, and show typical examples of their efficient applications, e.g. in finding the Euclidean minimum spanning tree, Euclidean minimum Steiner tree and collision-free motions in robotics.

Finally, we deal with the All-Pairs Shortest Paths Problem and Steiner tree problem on a graph in which a fuzzy number, instead of a real number, is assigned to each edge. We propose a modification of the shortest paths approximation based on the fuzzy shortest paths (FSP) evaluations. Since a fuzzy min operation using the extension principle leads to nondominated solutions, we propose another approach to solving the FSP using Cheng's centroid point fuzzy ranking method.

PLENARY LECTURE 3

The International Scientific Dialogue in Computer Science

Professor Nikos E. Mastorakis

Military Inst. of University Education

Hellenic Naval Academy

Terma Hatzikyriakou 18539,

Piraeus, GREECE

http://www.wseas.org/mastorakis

SESSION: Network Management and Optimization
Chair: Petrica Pop, Young-Chul Shim

A new approach to generalized network design problems	Petrica Pop, Corina Pop Sitar, Nicolae Pop, Ioana Zelina	540-316
Topological Design of a K-Connected Communication Network	S. Latha, S. K. Srivatsa	540-351
Measuring Non-Ionizing Electromagnetic Fields from a Specific Direction	D. Stratakis, A. Miaoudakis, N. Farsaris, T. Xenos, V. Zacharopoulos	540-174
Comparative Study of blocking mechanisms for Packet Switched Omega Networks	Dimitris Vasiliadis , George Rizos , Leonidas Tsiantis, S. V. Margariti	540-169
Wireless LAN and Power Line Communication platform for e-Learning multimedia system in underdeveloped area in Lombok Island	Achmad Rully, Urano Yoshiyori, Agung Untoro, Tetsuo Fujisaki, Hidehiro Kanemitsu, Ye Kyaw Thu	540-405
Energy efficient geocast protocol for sensor networks	Young-Chul Shim	540-326

Saturday, February 17, 2007

SESSION: Microelectronics and Optoelectronics

Chair: Lucian Jurca, Aloka Sinha

Comparison of RF Inductor Performance Evaluation Methods	Maria Drakaki, Alkis A. Hatzopoulos, Stylianos Siskos, Dimitrios K. Papakostas	540-314
Low Glitch Current-Steering DAC with Split Input Code	Mircea Tomoroga, Lucian Jurca, Mircea Ciugudean, Corneliu Toma	540-357
Design and Optimization of ÷8/9 Divider in PLL Frequency Synthesizer with Dynamic Logic (E_TSPC)	Ali Rahnamaei, Adel Akbarimajd, Asadollah Torabi, Mina Vajdi	540-119
Fractional Fourier Transform based Key Exchange for Asymmetric Key Cryptography	Aloka Sinha	540-145
Impact of MOSFET parameters on its parasitic capacitances	Nebi Caka, Milaim Zabeli, Myzafere Limani, Qamil Kabashi	540-130
An efficient method to calculate the free distance of convolutional codes	Ranjan Bose	540-142
All-Optical Arithmetic Unit Based On The Hardlimiters	Tamer A. Rahman, Mohamed K. Ahmed, El Sayed M. Saad.	540-321
An Experiment on Internet Based Telemetry	Z. Saleem, N. Khan, C. C. Hoong	540-161
A Nonlinear Model for a Turbo Compressor using Fuzzy Logic Approach	F. Laaouad, A. Hafaifa, K. Laroussi	541-396

SESSION: Measurements and Parameterization in Electronics

Chair: Farzin Emami, Jyri Rajamaki

Frequency response of a WG-SACM-APD InGaAs/InP structure	Farzin Emami, Mozaffareddin Ferdowsiyan Tehrani	540-408
Determination of the Parameters of the Skin-Electrode Impedance Model for ECG Measurement	C. Assambo, A. Baba, R. Dozio, M. J. Burke	540-318
LaureaPOP Indoor Navigation Service for the Visually Impaired in a WLAN Environment	Jyri Rajamaki, Petri Viinikainen, Julius Tuomisto, Thomas Sederholm, Miika Saamanen	540-157
Optimal Polarity for Dual Reed-Muller Expressions	Khalid. Faraj, A.E.A. Almaini	540-407

Sunday, February 18, 2007

SESSION: Wireless and Mobile Communications I

Chair: Jong-Moon Chung, Charles Sarraf

A Cooperative MIMO Mobile Multihop Relay for Cellular Networks	Jong-Moon Chung, Hyung-Weon Cho, Ki-Yong Jin, Min-Hee Cho, Ho Kim	540-329
Media Independent Handover in Broadband Mobile Networks	Jong-Moon Chung, Jae-Han Seol, Sang-Hyouk Choi	540-331
Improving JPEG 2000 Images Delivery over GPRS Mobile Networks	Charles M. Sarraf, Rihab M. Wakim	540-413
A Clustering Method for Energy Efficient Routing in Wireless Sensor Networks	Taewook Kang, Jangkyu Yun, Hoseung Lee, Icksoo Lee, Hyunsook Kim, Byunghwa Lee, Byeongjik Lee, Kijun Han	550-408
An Energy Efficient Clustering Method for Wireless Sensor Networks	Ilgyu Jung, Byunghwa Lee, Namkoo Ha, Keuchul Cho, Yoonjae Choi, Minho Choi, Byeongjik Lee, Kijun Han	550-413
An Efficient Topology Configuration Scheme for Wireless Sensor Networks	Jaetak Chung, Keuchul Cho, Hyunsook Kim, Minho Choi, Jinsuk Pak, Namkoo Ha, Byeongjik Lee, Kijun Han	550-444

SESSION: Wireless and Mobile Communications II

Chair: France Sevsek, Lucian Jurca

Dynamic Bandwidth Reservation for Multimedia and Data Applications In Mobile Wireless Cellular Networks	Khaja Kamaluddin, Mohammed Yousoof	540-337
Comparative Study of Service Discovery Protocols for ad-hoc networks	George Rizos , Dimitris Vasiliadis , Elefterios Stergiou, S. V. Margariti	540-168
FPGA implementation of viterbi decoder	S. Hema, V. Suresh Babu, P. Ramesh	540-139
Airborne Video Transmission for Naval and Coast Guard Applications	Nikos J. Farsaris, Thomas D. Xenos, Peter P. Stavroulakis	540-406
A novel approach to remote sensing and control	Rahul Pandhi, Mayank Kapur, Shweta Bansal, Asok Bhattachrya	540-280
Data Security Key Establishement in AODV	Monis Akhlaq, M. Noman Jafri, Muzammil A. Khan, Baber Aslam	540-253
An Adaptive TXOP Allocation in IEEE 802.11e WLANs	Yoonjae Choi, Byeongjik Lee, Jinsuk Pak, Icksoo Lee, Hoseseung Lee, Jangkyu Yoon, Kijun Han	550-439

Monday, February 19, 2007

SESSION: Digital Circuits

Chair: France Sevsek, Jong-Moon Chung

Reference clock-less 1.6Gb/s clock and data recovery circuit using oversampling method	Kang-Jik Kim, Il-Do Jeong, Seong-Ik Cho, Hang-Geun Jeong	540-370
2 Variable Reed Muller Binary Decision Diagrams	Pauline Oh, A.E.A. Almaini	540-244
An Area-efficient DLL based on a Merged Synchronous Mirror Delay Structure for Duty Cycle Correction	Seok-Yong Hong, Seong-Ik Cho, Hang-Geun Jeong	540-327
CCII-based TCXO using a Thermistor Network	Soon Jai Yi, Hang Geun Jeong, Seong Ik Cho	540-328

Publisher’s Note
Please be advised that a paper written by Omar Essa has been removed from the database.
The article has been removed because Omar Essa made extended plagiarism in his original paper
from:
Hans L. Cycon, Thomas C. Schmidt, Matthias Wδhlisch and Mark Palkow,
Henrik Regensburg, "A Distributed Multimedia Communication System and its
Applications to E-Learning", In: IEEE International Symposium on Consumer
Electronics, IEEE UKRI Consumer Electronics Chapter, pp. 425--429, IEEE
Press, 2004.
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1375982

Therefore WSEAS has removed the article from the database with immediate effect.