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Contact:
Email prade <AT> cs.sunysb.edu |
I am a Ph.D. candidate at the Department of Computer Science in Stony Brook University. I am affiliated with the Experimental Computer Systems Lab. My advisor is Prof. Tzi-cker Chiueh.
The underlying theme of my research at ECSL has been exploring and designing new systems. Most of the systems I have worked on are connected to wireless networks. My dissertation research, titled "A Reconfigurable Multi-hop Wireless Network Testbed", explores a novel technique for building wireless network testbed. Unlike commonly used multi-hop wireless testbeds, which are spread over large physical space, this is a multi-hop testbed on a tabletop. We are currently exploring the application of the testbed in validating different wireless network protocols.
Earlier I have worked on the design of a tool that is used for testing implementations of network protocols. The tool provides a script-based interface to specify fault events in the network, like packet drop, packet delay, and helps to study the responses of the protocol in the presence of such faults.
Some of the other systems I have worked on are a wireless video acquisition and delivery system, and a real-time Ethernet protocol for IEEE 802.11b.
MiNT: In this project, we have built a mobile, multihop, wireless network testbed based on a novel idea of miniaturizing the space requirement for such a testbed. We are exploring the use and benefits of this testbed in validating wireless network protocols, some of which were tested earlier in simulation.
VirtualWire: Testing implementations of network protocols involves introduction of network fault events, like packet drops, packet delay, by instrumenting the code. We provide a scripting language using which a user specifies such network faults to be inserted during code execution. We design the fault injection and analysis engine that inserts the faults during run-time and analyses the results based on user-specified invariants.
WiVision: The ability to deliver digital video over wireless networks is an enabling technology for many useful applications, ranging from home entertainment and security monitoring, to enterprise messaging and military reconnaissance. In this project, we have designed and implemented a complete distribution system, starting from capturing and encoding analog video signals, managing the storage of the video content for on-demand playback, and real-time broadcast of the video over wireless LAN.
LRTP: Cross-layer optimizations can deliver significant improvements to transport protocol performances in the context of ad hoc wireless networks. In this project, we are exploring the benefits of the Automatic Repeat Request mechanism in IEEE 802.11b in improving transport protocol performance. Overall, we are designing a complete link-layer aware reliable transport protocol, and compare its performance with TCP.
Wireless Rether: Delivery of multimedia over wireless LAN suffers from the lack of any guaranteed mechanism of delivery. In this project, we design a QoS mechanism for real-time delivery of multimedia traffic over wireless LAN. Wireless rether uses the idea of token passing among the contending wireless nodes to restrict access to the shared media.
MiNT: A Miniaturized Network Testbed for Mobile Wireless Research [ pdf
]
Pradipta De, Ashish Raniwala, Srikant Sharma, and Tzi-cker
Chiueh
In Proceedings of IEEE Infocom, 2005
VirtualWire: A Fault Injection and Analysis Tool for Network Protocols [ ps
]
Pradipta De, Anindya Neogi and Tzi-cker Chiueh
In Proceedings of International Conference on
Distributed Computing Systems (ICDCS), May 2003
Implementation Experiences of Bandwidth Guarantee on a Wireless LAN
[ ps ]
Srikant Sharma, Kartik Gopalan,
Ningning Zhu, Gang Peng, Pradipta De
and Tzi-cker Chiueh
In Proceedings of SPIE/MMCN2002, San Jose, CA, Jan. 2002
Quality of ServiceGuarantee on 802.11 Networks [ ps
]
Srikant Sharma, Kartik Gopalan,
Ningning Zhu, Gang Peng, Pradipta De
and Tzi-cker Chiueh
In Proceedings of 9th Hot Interconnects Symposium, Stanford
University, Aug. 2001
Design Considerations for a Multi-hop Wireless Network Testbed [ pdf
]
Pradipta De, Ashish Raniwala, Srikant
Sharma and Tzi-cker Chiueh
ECSL Technical Report, TR-175
Data Path Processing for Fast Programmable Routers. [ ps
]
Research Proficiency Exam Report, Stony Brook, Jan
2003
ECSL Technical Report, TR-127
Last Modified: 01/17/2005