EFFECT OF CWND AND RTO IN THE PERFORMANCE OF WIRELESS NETWORKS
Published In: INTERNATIONAL CONFERENCE ON ADVANCED COMPUTING, COMMUNICATION AND NETWORKS
Author(s): ABHI SHAH , DAIVIK BHATT , DIPEN KHATRI
Abstract: In this paper we describe a ns based simulation analysis of TCP performance over a hybrid network with first link as a wireless link. The latter choice is for understanding performance issues with better clarity. The effect of wireless errors on different TCP parameters resulted into end to end performance degradation of TCP is investigated. Based on the analysis of the basic MAC loss recovery mechanism, we are able to show impact of delay introduced by MAC loss recovery over the performance of TCP. With increased MAC loss recovery duration TCP is unable to conceive maximum of available bandwidth over a network. In addition, it also describe that adaption in CWND will improve the performance of wireless networks. All above simulation results clearly show a) scope for improving MAC loss recovery and b) requirement of tuning between TCP and MAC loss recovery, particularly for retransmission mechanism.
- Publication Date: 03-Jun-2011
- DOI: 10.15224/978-981-07-1847-3-1027
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MINIMUM-ORDER OBSERVERS FOR HYBRID WIND TURBINE AND FUEL CELL SYSTEM
Published In: 1ST INTERNATIONAL CONFERENCE ON ADVANCES IN COMPUTER, ELECTRONICS AND ELECTRICAL ENGINEERING
Author(s): B.JAGANATHAN , NEELAM SHIVHARE , R.SNEHA , S.ARCHANA , S.PAVITHRA
Abstract: Renewable Energy Sources are the upcoming energy sources, for they are readily available. The performance of these sources depends upon the available input. A continuous monitoring of the output which is also dependent upon the state variables of the source model (state model) is necessary. It thus, necessitates the incorporation of an observer in the existing system which estimates the state variables continuously. This paper proposes a novel method of designing a minimum order observer for a wind turbine, which further feeds a PMSG. This observer estimates the state variables of the wind turbine and compares this with the state variables of the actual plant model. This in turn generates a control vector which further provides the necessary control actions so that the output of the wind turbine is optimized to an acceptable extent. Two different configurations are made use for the simulation. The plant model alone in its closed loop form and the plant with the designed minimum order o
- Publication Date: 12-Mar-2012
- DOI: 10.15224/978-981-07-1847-3-720
- Views: 0
- Downloads: 0