Informatics Publishing Limited

B. Sathyabama ¹, S. Vydehi ²

Affiliations
1 Dr. SNS Rajalakshmi College of Arts and Science, Chinnavedampatti, Coimbatore – 641 049, IN
2 Department of Computer Science, Dr. SNS Rajalakshmi College of Arts and Science, Chinnavedampatti, Coimbatore – 641 049, IN

Abstract

Video streaming is made possible through the invention of wireless technologies. This paper deals with a mobile network for video streaming is established on the roads by making each vehicle on the road as end terminal. This is accomplished by adding some communication equipment to each vehicle. The underlying mobile technology used is Bluetooth. Since Bluetooth is limited for high data rate applications, the best compression algorithms MPEG4 are used, as it provides very low bit-rates. To transmit video frames (I frames in MPEG4) without any error, Bluetooth protocol stack is optimized in its link layer. Bluetooth can make adhoc networks whenever two Bluetooth enabled devices are within the 100m range. For road safety application, Video camera and Bluetooth enabled handheld computer, are mounted in the front part of the automobiles. Each vehicle has video signal, which depicts what are the things in front of it. This video is compressed using MPEG4.This video is streamed between vehicles wirelessly. This video gives the information what is happening in front up to 100m even that view is obstructed by the vehicle in front so that accidents can be reduced. Secondly, Global Positioning Systems can be used to drive the vehicle in the mist conditions is also envisioned.

Keywords

Bluetooth, MPEG4, Piconets, Road Safety, Global Positioning System (GPS).

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B. Sathyabama ¹, S. Malarkkan ²

Affiliations
1 Area of Low Power VLSI Design in Sathyabama University, Chennai, IN
2 Manakula Vinayagar Institute of Technology, Puducherry, IN

Abstract

One of the significant factors for evaluating the circuit performance is transistor sizing. Thus for offering better evaluation, an optimal size of transistor is required. The purpose of the optimization is to reduce the power-delay product or the energy requirement by the circuit. The power and delay are mainly based on the size of transistor. There are many technique exists for optimizing the size of transistor for reducing the power consumption. But all these techniques resulted in poor performance for larger transistors. To overcome those demerits, genetic algorithm is used. Genetic algorithm has the capacity of minimizing the search problem complexity uses the transistor sizing which is usually a type of search problem in the large multidimensional search space for energy reduction. This technique shows better performance when compared to the Hybrid Tree Structure technique. For further improving the performance, a modified genetic algorithm is proposed in this paper for determining the transistor size which in turn leads to better reduction of power consumption.

Keywords

Transistor Sizing, Power Optimization, Modified Genetic Algorithm.

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