ABSTRACT
We propose a CDMA-based power controlled medium accessprotocol for mobile ad hoc networks (MANETs). Unlikepreviously proposed protocols, ours accounts for the multipleaccess interference (MAI), thereby addressing the notoriousnear-far problem that undermines the throughputperformance in MANETs. Channel-gain information obtainedfrom overheard RTS and CTS packets over an outof-band control channel is used to dynamically bound thetransmission power of mobile terminals in the vicinity ofa receiver. By properly estimating the requi ....etc

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Wireless MAC Protocol Using Implicit Pipelining (Java)
IEEE Transactions on Mobile Computing, Vol. 5, No. 3,


Abstract: In distributed multiple access control protocols, two categories of overhead are usually associated with contention resolution. One is channel idle overhead, where all contending stations are waiting to transmit. Another is collision overhead, which occurs when multiple contending stations attempt to transmit simultaneously. Either idle overhead or collision overhead being large, contention resolution algorithm wo ....etc

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Abstract
The Seminar study focusses on Power Controlled MAC layer in Ad Hoc Networks. A
detailed study of the various challenges involved for deploying power control ad hoc networks
is carried out. Methods to overcome the problems are studied. This seminar provides a
comparative study of the different approaches for power control to achieve a high channel
utilization and energy saving.
1 Introduction
A Mobile Ad hoc network (MANET) is a multihop wireless network where a group of nodes co-operate to maint ....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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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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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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MAC-Layer Anycasting in Ad Hoc Networks



INTRODUCTION
Wireless Ad hoc networks are infrastructureless multi-hop
networks in which nodes behave as mobile routers. Routing
protocols attempt to choose “optimal” routes based on some optimality
criteria (e.g., number of hops). However, in the process
of selecting an optimal route, the routing protocol is often faced
with the decision to choose between two equally good routes.
Ties are often broken rando ....etc

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Abstract
Wireless ad hoc networks provide a new dimension to computing by allowing a group of portable devices to talk to each other without any additional infrastructure and have been the focus of research in the area of wireless networks. CDMA has been gaining popularity as the multiaccess technique and is part of many wireless standards now. In this project we present techniques to improve performance of the CDMA based wireless ad hoc systems and present results based on extensive simulations. The resource utilization of network in ....etc

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Presented by:
Amit Agrawal


Wireless LAN Simulation- IEEE 802.11 MAC Protocol
Project Goals
• MATLAB simulation
- DCF (Distributed Coordination Function)
- No Propagation Delay
• Performance Analysis
- Number of Nodes
- Range
- Packet Size
- RTS/CTS
DCF
• DCF
- CSMA/CA is a DCF
• Salient features
- Medium sharing through CSMA/CA
- Allows one to use the medium
- Random Back off interval before retransmission
- Refinement – RTS/CTS packets
[b ....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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