Introduction

This assignment aims at making the students familiar with the reactive (on-demand) routing protocols used in ad hoc networks and compare the performance of DSR and AODV protocols.

Performance Metrics used

We will evaluate the routing protocols in terms of two metrics-
1. Packet Delivery Fraction/Ratio : It is the ratio of packets delivered to that transmitted by the source.
2. Routing Load : It is the number of routing packets sent per data packet delivered.
NS2 Instructions

1. Get the tcl script from here.
2. This ....etc

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Performance Analysis of CSMA/CA protocol in IEEE 802.11 Networks using Backoff mechanism

Abstract: The distributed coordination function (DCF) in the IEEE 802.11 standard for wireless LAN is based on the Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) like medium access control protocol. This collision avoidance is implemented by means of backoff procedure which uses a rotating window mechanism. This paper presents a simulation analysis of the slot selection probabilities and the backoff mechanism. The ....etc

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ABSTRACT
Wi-Fi, which stands for Wireless Fidelity, is a radio technology that networks computers so they connect to each other and to the Internet without wires .Users can share documents and projects, as well as an Internet connection among various computer stations, and easily connect to a broadband Internet connection while traveling. By using a Wi-Fi network, individuals can network desktop computers, laptops and PDAs and share networked peripherals like servers and printers.
....etc

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An Important Technology
Cellular telephony is one of the fastest growing technologies on the planet.

Presently, we are starting to see the third generation of the cellular phones coming to the market.

New phones allow users to do much more than hold phone conversations.
Beyond Voice
Store contact information
Make task/to-do lists
Keep track of appointments
Calculator
Send/receive email
Send/receive pictures
Send/receive video clips
Get information from the internet
Play games
Integrate wit ....etc

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Mobile Ad Hoc Networks (MANETs) are networks in which all nodes are mobile and communicate with each other via wireless connections. Nodes can join or leave at anytime. There is no fixed infrastructure, all nodes are equal and there is no centralized control or overview. There are no designated routers: all nodes can serve as routers for each other, and data packets are forwarded from node to node in a multi-hop fashion.

Since a few years research interest in MANETs has been growing, and especially the design of MANET routing protocols has r ....etc

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ABSTRACT
The popularity and usefulness of the Internet seem to grow exponentially every day. As a result of this rapid growth, mobile users expect to access the Internetâ„¢s information resources and to communicate with other Internet users. However, providing efficient and reliable stream transmissions in mobile computing environments presents a significant obatacle to the development of mobile computing systems over the Intenet. this paper presents three approaches-known as Fast Retransmissions, Data Interceptions, and ....etc

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ABSTRACT
Wireless connectivity of a vast number of industrial and home applications has modest transmission data requirements, but demands reliable and secure communication using simple low-cost and low-power radio systems. In the quest for high-bandwidth, multimedia-capable wireless networks, the need for cost and power-effective radio solutions for this vast number of fairly simple applications was only recently addressed by a standardized technology.
The IEEE 802.15.4 standard and ZigBee wireless technology are d ....etc

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this is a short seminar of enabling voce over WLAN. ....etc

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PRESENTED BY
ZILLE HUMA KAMAL


REAL TIME COMMUNICATION IN WIRELESS SENSOR NETWORKS
WHAT IS A REAL TIME SYSTEM (RTS)
“A real time system is one in which the correctness of the computations not only depends on their logical correctness, but also on the time at which the result is produced”
CLASSIFICATION OF RTS
• 2 Categories of RTS:
– A Hard RTS is one in which one or more activities must never miss a deadline or timing constraints, otherwise the system fails or results in catastrophe. [ ....etc

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Respected Researcher,
I am looking for Matlab codes for routing as well as clustering in Wireless sensor networks using fuzzy logic. please share with me these codes. I shall be highly thankful to you for this. ....etc

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Performance Analysis of CSMA/CA protocol in IEEE 802.11 Networks using Backoff mechanism

Abstract: The distributed coordination function (DCF) in the IEEE 802.11 standard for wireless LAN is based on the Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) like medium access control protocol. This collision avoidance is implemented by means of backoff procedure which uses a rotating window mechanism. This paper presents a simulation analysis of the slot selection probabilities and the backoff mechanism. The ....etc

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