Informatics Publishing Limited

R. Karthikeyan ¹, A. Prasina ², Ramesh Babu ³, S. Raghavendran ⁴

Affiliations
1 Department of ECE, Velammal Institute of Technology, Tiruvalluvar District-601204, IN
2 Department of EEE, Velammal Institute of Technology, Tiruvalluvar District-601204, IN
3 Department of ECE, St. Peters University, Chennai-600054, Tamilnadu, IN
4 Department of CSE, Vel Tech Dr. RR & Dr. SR Technical University, Chennai-600062, Tamil Nadu, IN

Abstract

Presented in this paper, is an adaptive control scheme and a parameters update law based upon the Lyapunov stability theorem. It is intended for the synchronization of a new chaotic system with unknown parameters. Feed back control system for synchronization of chaotic system is proposed by using complete synchronization approach. In the proposed method, each system is constructed with MATLAB simulink blocks, and then Simulink designs are translated into System Generator design so that bitstream file used to program FPGA is obtained. Finally, the design is implemented into FPGA by downloading bitstream file into FPGA. As an application of FPGAs the synchronization of chaotic systems has been achieved. Additionally, we show the effectiveness of proposed method by the use of numerical solution.

Keywords

Chaos synchronization, Complete synchronization, Adaptive control, Lyapunov stability theorem, System generator, FPGA implementation.

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N. Gomathi ¹, S. Raghavendran ¹, P. Darwin ¹, D. Sugumaran ²

Affiliations
1 Department of Computer Science and Engineering, Vel Tech University, Chennai – 600062, Tamil Nadu, IN
2 Department of Information Technology, Vel Tech University, Chennai – 600062, Tamil Nadu, IN

Abstract

Background/Objectives: Multimedia Applications on Mobile Ad hoc Networks (MANETs) are gaining immense popularity recently due to their necessity in latest environments. Hence, multimedia applications like video streaming, video conferencing and environment monitoring must be made possible in real-time in Mobile Ad hoc Networks. Mobility of nodes, life of battery, changes in topology and protocols affect the performance of MANET. Hence providing good Quality of Service (QoS) for multimedia applications in MANET is a challenge. Methods/Statistical Analysis: The RED algorithm with video precedence called as SiViRED (Significant Video Information Random Early Detection) - AQM in the Network layer that provides service differentiation based on the pre-assigned service classes and video packet drop priority specified in packet header. This will reduce congestion and decrease delay and jitter when compared to conventional methods. Findings: Proposed a novel technique that uses a cross layer architecture in which information from application layer is used with UDPLite in Transport layer and Active Queue Management (AQM) with SiViRED in Network Layer with modified dynamic mapping in MAC layer that guarantees 14% increase in Peak Signal to Noise Ratio (PSR) and 40% decrease in delay compared to conventional methods. Application/Improvements: Developed a cross layer technique that improves the end-to-end performance of multimedia services over Mobile Ad hoc Networks.

Keywords

Delay, Jitter, Mobile Ad hoc Networks, PSNR, QoS.

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