Abstract— Computational Private Information Retrieval (cPIR) protocols allow a client to retrieve one bit from a database, without the server inferring any information about the queried bit. These protocols are too costly in practice because they invoke complex arithmetic operations for every bit of the database. In this paper, we present pCloud, a distributed system that constitutes the first attempt toward practical cPIR. Our approach assumes a disk-based architecture that retrieves one page with a single query. Using a striping technique, ....etc

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1. Mobile Phone Signal Jammer for GSM, CDMA and 3G Networks with Prescheduled
2. Implementation of high sensitive GSM signal detector with audio visual alert indication
3. Implementation of model Radar target direction identifier with remote station alert system
4. Study of Parabolic Antenna for Direct to Home Communication
5. PC to Microcontroller Secured Data Communication using Fiber Optic communication
6. Ultrasonic Target Range Estimation using SONAR Technology
7. Implementation of data and voice communication from PC to GSM network ....etc

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....etc

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Introduction
In recent years, Broadband technology has rapidly become an established, global commodity required by a high percentage of the population. The demand has risen rapidly, with a worldwide installed base of 57 million lines in 2002 rising to an estimated 80 million lines by the end of 2003. This healthy growth curve is expected to continue steadily over the next few years and reach the 200 million mark by 2006. DSL operators, who initially focused their deployments in densely-populated urban and metropolitan areas, are now challenged ....etc

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Introduction
In recent years, Broadband technology has rapidly become an established, global commodity required by a high percentage of the population. The demand has risen rapidly, with a worldwide installed base of 57 million lines in 2002 rising to an estimated 80 million lines by the end of 2003. This healthy growth curve is expected to continue steadily over the next few years and reach the 200 million mark by 2006. DSL operators, who initially focused their deployments in densely-populated urban and metropolitan areas, are now challenged ....etc

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Microwave Remote Sensing

(MRS)

What is microwave remote sensing?
A special application of microwave communications technologies for the purpose of collecting geophysical information about targets (objects and media) without making physical contact.
Microwave reflections or emissions from earth materials bear no direct relationship to their counterparts in the visible portions of the spectrum.

How does Microwave Remote Sensing work?
There is an interaction between the EM waves and matter.
The target imposes a modulation on the EM ....etc

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sir,
i want to know which type of viva questions will pose on microwave and optical communication lab ....etc

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I want optical nd microwave lab viva questions
....etc

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can you provide me the ppt on microwave communication in railway

can you provide me ppt on microwave communication in railways...
ppt on microwave communication in railways ....etc

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Worldwide Interoperability for Microwave Access. In the rap.idly-evolving sphere of wireless technology, WiMAX is. the next generation in wireless access to the Internet with speeds that are equivalent to cable or DSL connections. While Wi-Fi focused on providing wireless LAN and Internet access, WiMAX is geared to deliver broadband access over a range of 10 t6 50 kIn at speeds varying from 10 to 70 Mbps. There are two main types of WiMAX: Fixed WiMAX and Mobile WiMAX.



Similar to cellular networks, the WiMAX service is provided through ....etc

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