In this paper we investigate the problem of voice communications across heterogeneous telephony systems on dual-mode (WiFi and GSM) mobile devices. Since GSM is a circuit-switched telephony system, existing solutions that are based on packet-switched network protocols cannot be used. We show in this paper that an enabling technology for seamless voice communications across circuit-switched and packet-switched telephony systems is the support of digital signal processing (DSP) techniques during handoffs. To substantiate our argument, we start wi ....etc

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Use of Honey-pots to Detect Exploited Systems Across Large Enterprise Networks



Security a serious problem

Methods for detection/protection/defense:

-Firewall: The Traffic cop
-IDS: detection and alert
These have shortcomings:

-Internal threats
-Virus laden programs
-False Positives and False negatives
....etc

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Introduction

Wireless system have been developed in an evolutionary way,ie,generation by generation over the last 20 years.
1G system is of diminishing importance.
The dominant generation are 2G,2.5G with 3G coming into use.
Pilot research has been targeted to the next generation.
One feature of next generation is the heterogeneous communication environment.
....etc

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Hi am zahra i would like to get details on matlab coding for Seamless handoff from WLAN to Cellular Network by AP’s Frequency Channel Support of wireless nodes ..My friend said matlab coding for vertical handoff decision making using genetic algorithm will be available here and now i am living at iran and i last studied in the univercity and now am doing my master degree thesis i need help on my matlab code ....etc

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i want a ppt presentation on seamless pipe manufacturing, please help me.
....etc

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SEAMLESS MOBILITY
ABSTRACT
The new trend in communication is that everyone needs to be wireless and prefer mobile communication and PDA's. The present service providers fail to provide all type of communication like GPS, INTERNET..etc. Wireless Local Area Network Seamless Voice and Data Solution is a complete end-to-end enterprise communications solution that can lower communications costs, increase user efficiencies and create new capabilities. The solution will converge wired and wire ....etc

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i want coordinated master control project i.e.,boiler follow mode and turbine follow mode
i have doubt this project o help me ..........................
....etc

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Am rema,want to know about an efficient common mode hybrid filter used in SMPS for my seminar work.


Abstract obtained from IEEE is After the study of electromagnetic interference (EMI)
mechanisms in switching mode power system (SMPS) and the soft
switch, this paper proposes a novel hybrid filter (HEF) to suppress
commend mode EMI in SMPS. The HEF consists of a passive filter
and an active filter. Matching network, which can reduce
impedance mismatching effects, is introduced in passive part. A
....etc

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MobileNAT-a New Technique For Mobility across Heterogeneous Address Spaces ....etc

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Presented By:
SuKyoung Lee*, Kotikalapudi Sriram  Kyungsoo Kim¡, JongHyup Lee*, YoonHyuk Kim¡, and Nada Golmie 

Abstract”
There are currently heterogeneous wireless access networks. A large variety of applications utilizing these networks will demand features such as real-time, high-availability and even instantaneous high-bandwidth in some cases. Therefore, it is imperative for network service providers to make the best possible use of the combined resources of available heterogeneous networks for connection su ....etc

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