Papers by Praphul Chandra
Wireless Networking: Newnes Know It All
The Newnes Know It All Series takes the best of what our authors have written to create hard-work... more The Newnes Know It All Series takes the best of what our authors have written to create hard-working desk references that will be an engineer's first port of call for key information, design techniques and rules of thumb. Guaranteed not to gather dust on a shelf!Wireless Networking: Design, Optimize, Implement delivers readers from the basics of a wireless system such as antennas and transmitters to current hot topic wireless systems and technologies. The backbone to technologies and applications such as mobile, untethered Internet access, Internet telephony, and high quality multimedia content via the Web is completely covered in this reference. Chapter 1. Basics of Wireless Communications Chapter 2. Basics of Wireless Local Area Networks Chapter 3. Radio Transmitters and Receivers Chapter 4. Radio Propagation Chapter 5. Antennas and Transmission Lines Chapter 6. Communication Protocols and Modulation Chapter 7. High-Speed Wireless Data: System Types, Standards-Based and Propri...
Wireless Security: Know It All
The Newnes Know It All Series takes the best of what our authors have written to create hard-work... more The Newnes Know It All Series takes the best of what our authors have written to create hard-working desk references that will be an engineer's first port of call for key information, design techniques and rules of thumb. Guaranteed not to gather dust on a shelf! A 360-degree view from our best-selling authors Hot topics covered The ultimate hard-working desk reference; all the essential information, techniques and tricks of the trade in one volume
The Role of Space, Homophily & Neighbor-Cohesion in the Evolution of Small Worlds
1 Contact Author 2 While intern at HP Labs, India. Abstract— Empirical studies have shown that re... more 1 Contact Author 2 While intern at HP Labs, India. Abstract— Empirical studies have shown that real world social networks exhibit properties of short path lengths (small world) & high clustering. Why is the real world small? Why do real world social networks exhibit properties of small path lengths and high clustering? We seek to address these questions in this paper. Our aim is to understand what micro-level (individual) behavior explains the emergence of macro-level (network) properties. In this paper, we explore what processes of network evolution make possible the emergence of a network which exhibits small path lengths, high clustering & log-normal degree distribution. We propose a series of network evolution models which use micro level behavior of homophily & neighbor-cohesion to explore how networks embedded in space evolve. We show that in these models small path lengths & high clustering emerge when each node behaves selfishly with only local information.
Crowdfunding Public Projects with Provision Point: A Prediction Market Approach
Crowdfunding is emerging as a popular means to generate funding from citizens for public projects... more Crowdfunding is emerging as a popular means to generate funding from citizens for public projects. This is popularly known as civic crowdfunding. In this paper, we focus on crowdfunding public projects with provision point: these are projects in which contributions must reach a predetermined threshold in order for the project to be provisioned. On web based civic crowdfunding platforms, the success of crowdfunding public projects has been somewhat mixed. In this paper, our objective is to design a mechanism that improves the success of crowdfunding public projects. In particular, we propose a class of mechanisms for crowdfunding platforms with sequentially arriving agents. This class of mechanisms induces an extensive form game for agents arriving on the platform and we show that the game has a non-empty set of sub-game perfect equilibria at which the project is fully funded. We call this new class of mechanisms Provision Point Mechanism with Securities (PPS). The novelty of PPS lie...
Mapping Web Content to Unused Broadcast Channel
Media Content-Based Control of Ambient Environment
End-point based approach for determining network status in a wireless local area network
Preventing an Unauthorized Publication of a Media Object
Electronic device having improved user interface
Dynamic call parameter switchover and graceful degradation for optimizing VoIP performance in wireless local area networks
Storing and Querying of User Feedback in a Personal Repository Accessible to a Personal Computing Device
Data Entry Apparatus And Method
Methods and apparatus to manage power consumption in wireless devices
Minimizing handoffs and handoff times in wireless local area networks
Method and System for Interfacing with Multiple Devices
Unconnected power save mode for improving battery life of wireless stations in wireless local area networks
An Incentive Based Peer-to-Peer Protocol for Anonymous Collaborative Mobile Streaming
2009 IEEE Wireless Communications and Networking Conference, 2009
ABSTRACT
Voice-Oriented Wireless Networks
Bulletproof Wireless Security, 2005
This chapter presents some of the challenges of the wireless medium. Wireless is a medium which m... more This chapter presents some of the challenges of the wireless medium. Wireless is a medium which must be shared by all terminals which wish to use it in a given geographical region. Also, wireless is inherently a broadcast medium since radio transmission cannot be “contained.” These two factors create the hidden terminal problem in the wireless medium. The exposed terminal problem is at the opposite end of the spectrum from the hidden terminal problem. Bandwidth is also the only constraint for wireless networks. The chapter provides an overview of traditional wireless networks (TWNs). These networks were designed with the aim of extending the existing wired public switched telephone network (PSTN) to include a large number of mobile nodes. The deployment of TWNs allowed users to be mobile and still make voice calls to any (fixed or mobile) phone in the world. For a long time, TWNs were the predominant example of wireless telecommunication. In the late 1990s, another wireless technology emerged: wireless local area networks (WLANs). Unlike TWNs, WLANs were designed primarily with the aim of enabling data communication in a limited geographical area. The wireless mobile ad hoc network (MANET) technology has emerged significantly in the recent years. The MANETs are designed with the aim of providing ad hoc communication.
Guiding an Image-Based Task Execution
Measuring the Interaction Value of Widgets
ABSTRACT Widgets are an increasingly popular model of web interactions, especially in mobile envi... more ABSTRACT Widgets are an increasingly popular model of web interactions, especially in mobile environments. By packaging multiple web actions into a 1-click interaction, widgets can radically simplify web interaction. In this paper, we propose a method for quantitative evaluation of the reduction in interaction complexity due to widgets. We apply our evaluation on a special class of widgets called Tasklets that model a widget as an interaction flow over websites. We then use an information theoretic definition of complexity to measure the reduction in user interaction complexity achieved by these user created widgets. Our approach is structural in nature and can thus be applied independent of the underlying semantics of the widget.
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Papers by Praphul Chandra