sir i need ppt for simulation and bit error rate analysis of 4g ofdm systems by using different modulation schemes like qam,qpsk,bpsk ....etc

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The bit error rate (BER) expressions of 16-phase shifting (PSK) and 16-quadrature amplitude modulation (QAM) are obtained analytically in the presence of a phase error. By averaging over the phase error statistics, the performance penalty can be analyzed analytically as a function of the phase error variance. Phase error variations leading to a signal-to-noise ratio of 1 dB per bit penalty at BER = 10 (-4) have been found 8.7 x 10 (-2) rad (2), 1.2 x Rad (2), 2.4 x 10 (-3) rad (2), 6.0 x 10 (-4) rad (2) and 2.3 x 10 (-3) rad (2) ) For binary, q ....etc

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Benton Highsmith Calhoun, Member, IEE, and Anantha P. Chandrakasan, Fellow, IEE

Abstract
Low-voltage operation for memories is attractive because of lower leakage power and active energy, but the challenges of SRAM design tend to increase at lower voltage. This paper explores the limits of low-voltage operation for traditional six transistor (6 T) SRAM and proposes an alternative bitcell that functions to much lower voltages. Measurements confirm that a 256-kb 65-nm SRAM test chip using the proposed bitcell operates into ....etc

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Hey refer this page for more details on A Fully Distributed Proactively Secure Threshold Multi Signature Scheme

http://seminarsprojects.net/Thread-a-fully-distributed-proactively-secure-threshold-multisignature-scheme--5880 ....etc

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I need a mat lab code corresponding the spectrum access channel from primary user to secondary user to demonstrate that code to UG students please send the code for that ....etc

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Introduction

This report presents three main topics we investigated as part of a project to build a Booth encoded multiply/accumulate VLSI chip. The original scope of work included synthesizing VHDL code using the Mentor Graphics tools. Exemplar was the VHDL compiler. Leonardo Spectrum was the synthesizer. Since my team, which included Kevin Delaney, did not meet a Mosis deadline our chip funding was lost. Since we did not actually fabricate a chip, we cannot discuss the success of our results. Likewise, VHDL synthesis using the Exemp ....etc

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A Fully Distributed Proactively Secure Threshold-Multisignature Scheme



INTRODUCTION
IN distributed systems it is sometimes necessary for users
to share the power to use a cryptosystem , . The
system secret is divided up into shares and securely stored
by the entities forming the distributed cryptosystem. The
main advantage of a distributed cryptosystem is that the
secret is never computed, reconstructed, or stored in a
single location, making the secret more difficu ....etc

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quality threshold clustering algorithm implementation source code

Abstract

Quality Threshold Clustering (QTC) is an algorithm for partitioning data, in fields such as biology, where clustering of large data-sets can aid scientific discovery. Unlike other clustering algorithms, QTC does not require knowing the number of clusters a priori, however, its perceived need for high computing power often makes it an unattractive choice. This paper presents a thorough study of QTC. We analyze the worst case complexity of the algorithm and discuss metho ....etc

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matlab code energy based spectrum sensing in cognitive radio energy threshold based algorithm

ABSTRACT

Spectrum sensing is the basic and essential mechanisms of Cognitive Radio (CR) to find the unused spectrum. This paper presents an overview of CR architecture, discusses the characteristics and benefits of a CR. Energy detection based spectrum sensing has been proposed and used widely because it doesn't require transmitted signal properties, channel information, or even the type of modulation. In this paper, a survey of energy detector over ....etc

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threshold multisignature source code

Threshold Multi signature Scheme Project:
The main aim of this abstract is presenting secure and efficient way of Threshold multi signature scheme. The fundamental properties are defined in this scheme consist the all properties of the multi signature and thresh hold group signatures.

Existing System:

For the generation of digital signature more shareholders are required. The shareholders must contribute equally to produce valid digital signatures.The scheme consist the all properties of the multi signat ....etc

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