Abstract—We implement a new software-based multihop TDMA MAC protocol (Soft-TDMAC) with microsecond synchronization using a novel system interface for development of 802.11 overlay TDMA MAC protocols (SySI-MAC). SySI-MAC provides a kernel independent message-based interface for scheduling transmissions and sending and receiving 802.11 packets. The key feature of SySI-MAC is that it provides near deterministic timers and transmission times, which allows for implementation of highly synchronized TDMA MAC protocols. Building on SySI-MAC's predic ....etc

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INTRODUCTION
Most of the computer viruses that were written in the early and mid '80s were limited to self-reproduction and had no specific damage routine built into the code (research viruses)
The first publicly documented removal of a computer virus in the wild was performed by Bernd Fix in 1987.
Fred Cohen, who published one of the first academic papers on computer viruses in 1984, started to develop strategies for antivirus software in 1988 that were picked up and continued by later antivirus software developer ....etc

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Hi plz share the conclusion for antivirus ....etc

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ABSTRACT
Virus attacks and intrusion attempts have been causing lots of troubles and serious damages to almost all the computer users. Ever the day, one starts using a computer, virus infection becomes an issue of concern. One is always left in a frightened situation, worried about the security of crucial data, completion of mission critical tasks and achievement of important goals.
Antivirus software currently available is particularly suitable for detecting and eliminating known viruses. This traditional concept is becoming obsolete beca ....etc

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hello plz can i get a ppt on dis topic.i really need it urgently.thanx alot ....etc

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sir...
please send me the MATLAB code for energy consumption in S-MAC and Token BAsed MAC Protocol. on my mail id ([email protected])


Anjali Varshney ....etc

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sir
i am the student of M.tech.and i am working on wireless sensor network MAC protocols.
please send me the MATLAB coding for average packet latency in T-MAC and S-MAC protocols.on my mail id...([email protected]).

Anjali Varshney ....etc

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Commwarrior mobile antivirus
ABSTRACT

Commwarrior-A is the first known mobile phone virus capable of replicating via MMS messages, which captured the world's attention in March 2005. The virus, originally targeted at Symbian Series 60 smart phones, failed to result in an epidemic. However, its ability to propagate via Multimedia Messaging Service messages (MMS) worried some experts at the time of its discovery.
Until the arrival of Commw ....etc

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Z-MAC: A Hybrid MAC for Wireless Sensor Networks

Presented By:-
Subodh Kumar Gond
Roll. No. 08EC6415
M.Tech. 1st Year
Telecommunication System Engineering


Introduction

What is MAC
-Controlling access to the channel
What is Z-MAC

- A Hybrid MAC which Combine the strengths of CSMA and TDMA while offsetting their weakness.

- The main feature of Z-MAC is its adaptability to the level of contention in the network .

CSMA (Carrier Sense Multiple Access)
¢ ....etc

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Abstract—The pervasive adoption of IEEE 802.11 radios in the past decade has made possible for the easy Internet access from a vehicle, notably drive-thru Internet. Originally designed for the static indoor applications, the throughput performance of IEEE 802.11 in the outdoor vehicular environment is, however, still unclear especially when a large number of fast-moving users transmitting simultaneously. In this paper, we investigate the performance of IEEE 802.11 DCF in the highly mobile vehicular networks. We first propose a simple yet accu ....etc

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