Abstract:

A digital audio broadcasting system that is capable of providing a large number of high quality stereophonic channels to mobile receivers in an environment with severe multipath delay and fading. Optimum combination of frequency and time diversity to guarantee robust performance in the mobile channel, with its multipath delay and frequency-selective fading effects. The system is based upon a dynamic single channel per carrier assignment of each stereo channel to many carriers. Inter symbol interference degradations caused by multipat ....etc

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sir, this is my academic project.. i want to know how to encrypt image..? is it possible to encrypt image using AES algorithm..?

how can we generate digital signature for image authentication..?
help me.. ....etc

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This article is presented by:
HONG Jingxin
Communication Engineering Department of Xiamen University

A New Forward-Secure Digital Signature Scheme
ABSTRACT
In this paper, the widely used ECC digital signature scheme ECDSA is advanced, and a new forward-secure digital signature scheme is proposed in order to reform the limitations of ECDSA. In the new scheme, although the digital signature s private key is under the control of a one-way function and continually ....etc

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Digital-to-Analog Analog-to-Digital
Data Handling Systems
Both data about the physical world and control signals sent to interact with the physical world are typically analog or continuously varying quantities.
In order to use the power of digital electronics, one must convert from analog to digital form on the experimental measurement end and convert from digital to analog form on the control or output end of a laboratory system.
Digital-to-Analog Conversion
When data is in binary form, the 0's and 1's may be of s ....etc

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A/D and D/A Conversion,analog to digital and digital to analog

Data Converter impacts the factor for the performance of the overall radio design
Requirements: very high sampling rates, high number of effective quantization bits, an operating bandwidth of several Ghz, a large spurious-free dynamic range, a reasonable price
DAC and ADC converters
Sampling and Quantization
Nyquist Zones
Aliasing
Bandpass filtering uses image to translate bandpass signals to baseband
Errors occurs in Quantization
Quanti ....etc

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hi..we want the project abstract of lcd based digital alarm clock with digital thermometer using 8051/89c51..
....etc

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to get information about the topic digital voltmeter full report refer the page link bellow
http://seminarsprojects.net/Thread-digital-voltmeter ....etc

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detailed working of a DIGITAL NOCTURNAL NUISANCE using logic gates ....etc

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digital clock using 8051 advantages and disadvantages

Digital clock displays the time using numbers. This circuit is used in many applications like cars, railway stations, houses, offices, etc. in order to provide accurate time and date. In this type of applications, normally we use RTC (Real Time Clock) ICs to display the time and date accurately. This circuit displays the time on LCD. For this clock, we can set the time at any instant. Here the clock works in 24 hour mode and the RTC chip is configured by programming 8051 controller.

Circui ....etc

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APPLICATIONS OF DIGITAL OBJECT COUNTER USING LDR & IC 555 MONOSTABLE MULTIVIBRATOR ....etc

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