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Articles by J. Martin Leo Manickam
Total Records ( 3 ) for J. Martin Leo Manickam
  R.K. Jeyachitra and J. Martin Leo Manickam
  Researchers propose and develop a simple and new reconfigurable millimeter-wave photonic transversal filter featuring high quality windowing property. The filter design is based on spectrum slicing of a broadband optical source by two cascaded fabry-perot filters. It shows the overall filter passband frequency response at millemeterwave band. This is obtained by properly choosing different free spectral range of two fabry-perot filters in cascaded configuration. The simulated results are presented to show that the overall filter free spectral range is 41.1 GHz. The 3 dB bandwidth is 50 MHz. It shows excellent side lobe suppression. A high quality factor of 822 has been reported. Reconfigurability of the filter is achieved by employing multiple apodization profile with two fabry-perot filters in cascaded form. The reconfigured frequency response of the filter is demonstrated for different windowing profiles and the results are tabulated. The results show high quality response of the filter. The advantage of this configuration is that a high performance filter is obtained without the need of any suppression of passband RF-spectral distortion which makes the system as simple and cost effective. It can be used for high density telecommunication networks and millemeterwave photonic communication systems.
  A. Punitha and J. Martin Leo Manickam
  Vehicular Ad-hoc Network (VANET) is a network where vehicles within the network can communicate with each other using the help of the road side equipment. There are wide applications using VANET and hence has emerged as an important technology in the automobile industry. Since, VANET is very helpful in providing the real time traffic information to the vehicle users, offering notification related to the post crash, street hassle handling and traffic vigilance ability, it is widely used and in good demand. But, VANETs are prone to several threats due to its security related challenges like reduced tolerance for error, very high mobility, etc and high rate of attacks like eavesdropping, impersonating, session hijacking on the vehicular network. Hence, safety is a high priority in VANET. In this study, we develop a group authentication mechanism to securely form a group of vehicle that can communicate with each other efficiently.
  J. Martin Leo Manickam and S. Shanmugavel
  Many of the proposed routing security solutions for the Mobile Ad hoc Networks (MANET) requires cryptographic techniques or a secret association between the communicating entities. These security solutions work well for the anticipated attacks but fails for unanticipated attacks. In this study, a Resiliency Oriented Secure (ROS) routing protocol for MANET is proposed. Present proposed protocol is a secure extension of AODV, in which each node suspects routing packet based on update time interval in its route table entry and confirms it with local neighbors. The evaluation results show that present protocol has better performance than Ad hoc On demand Distance Vector (AODV) routing protocol under attack in terms of delivery ratio, routing overhead ratio, average end-to-end delay and average route acquisition latency.
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