Performance of Orthogonal Fingerprinting Codes under Worst-Case Noise

Abstract:
We study the effect of the noise distribution on the error probability of the detection test when a class of randomly rotated spherical fingerprints is used. The detection test is performed by a focused correlation detector, and the spherical codes studied here form a randomized orthogonal constellation. The colluders create a noise-free forgery by uniform averaging of their individual copies, and then add a noise sequence to form the act ....etc

[:=Read Full Message Here=:]

In optical networks three multiple access tech. are used WDMA, TDMA, CDMA. In CDMA we need more and more orthogonal codes. It is different from normal orthogonal codes as that are bypolar where as in optical domin thing are unipolar. So this needs one new codes which have less weight. For this thing few techniques are available and we have to develop new one ....etc

[:=Read Full Message Here=:]

Orthogonal Frequency Division Multiplplexing

Multi Carrier Modulation is a technique for data transmission by dividing a high bit rate data stream is several parallel low bit ]rate data streams and using these low bit rate data streams to modulate several carriers. Multi Carrier Transmission has a lot of useful properties such as delay spread tolerance and spectrum efficiency that encourage their use in untethered broadband communications. OFDM is a multi carrier modulation technique with densely spaced sub carriers tha ....etc

[:=Read Full Message Here=:]

Abstract
Mobile Ad Hoc Network (MANET) consists of a collection
of wireless mobile hosts without the required intervention of any
existing infrastructure or centralized access point such as base
station. The dynamic topology of MANET allows nodes to join and
leave the network at any point of time. Wireless MANET is
particularly vulnerable due to its fundamental characteristics such
as open medium, dynamic topology, distributed cooperation and
constrained capability. In this paper we simulate the blackhole
attack which is one of ....etc

[:=Read Full Message Here=:]

Orthogonal Frequency Division Multiplexing


1. INTRODUCTION
1.1. Introduction:-
Orthogonal Frequency Division Multiplexing (OFDM) is one of the latest modulation techniques used in order to combat the frequency-selectivity of the transmission channels, achieving high data rate without inter symbol interference. The basic principle of OFDM is gaining a wide spread popularity within the wireless transmission community. Furthermore,
OFDM is one of the main techniques proposed to be employed in ....etc

[:=Read Full Message Here=:]

Abstract:

This paper presents a novel approach for calculating a probabilistic worst-case response-time for messages in the Controller Area Network (CAN). CAN uses a bit-stuffing mechanism to exclude forbidden bit-patterns within a message frame. The added bits eliminate the forbidden patterns but cause an increase in frame length. How much the length is increased depends on the bit-pattern of the original message frame.
Traditional response-time analysis methods assume that all frames have a worst-case number of stuff-bits. This introduces ....etc

[:=Read Full Message Here=:]

hello

I am Fasca doing ME in computer.My project is based on the biometric system ie. periocular biometrics in visible spectrum with some alterations in algorithms to give more performance by using the technology matlab.
So for reference can u send some ppt and coding based on this project ....etc

[:=Read Full Message Here=:]

Abstract:
Orthogonal Frequency-Division Multiple Access (OFDMA) is a multi-user version. Multiple access is achieved in OFDMA by assigning subsets of subcarriers to individual users. This allows simultaneous low data rate transmission from several users, OFDM is sometimes referred to as discrete multi-tone modulation, instead of a single carrier being modulated, a large number of evenly spaced subcarriers are modulated using some m-ary of QAM. This is a spread-spectrum technique that increases the efficiency of data communications by increasin ....etc

[:=Read Full Message Here=:]

To get full information or details of salt and pepper noise removal by median type noise detectors and detail preserving regularization please have a look on the pages

http://seminarsprojects.net/Thread-salt-and-pepper-noise-removal-by-median-type-noise-detectors-and-detail-preserving

http://seminarsprojects.net/Thread-salt-and-pepper-noise-removal-by-median-type-noise-detectors-and-detail-preserving?pid=84244&mode=threaded

if you again feel trouble on salt and pepper noise removal by median type noise detectors and detail preserving regu ....etc

[:=Read Full Message Here=:]

Orthogonal Frequency Division Multiplexing (OFDM)

ABSTRACT
Orthogonal Frequency Division Multiplexing (OFDM) has recently gained a lot of attention and is a promising candidate for future wireless multimedia communications due to it is resistive to frequency-selective fading and its flexibility for handling multiple data rates for Fourth Generation (4G) wireless systems also it promises data rates up to 10Mbps. A variation of OFDM is Multi-Carrier CDMA (MC-CDMA), in which an OFDM technique and CDM ....etc

[:=Read Full Message Here=:]