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Northumbria University
(16 results)-
White Papers
Free-Space Optical Communication in Atmospheric Turbulence Using DPSK Subcarrier Modulation
May 10, 2007, 12:00am PDT
The bit error rate (BER) expression and performance of free-space optical communication link in clear but turbulent atmosphere using subcarrier intensity modulation (SIM) with differential phase...
Provided by Northumbria University
-
White Papers
MIMO Free-Space Optical Communication Employing Subcarrier Intensity Modulation in Atmospheric Turbulence Channels
June 3, 2009, 12:00am PDT
This paper analyse the error performance of transmitter/receiver array Free-Space Optical (FSO) communication system employing Binary Phase Shift Keying (BPSK) Subcarrier Intensity Modulation...
Provided by Northumbria University
-
White Papers
Virtual Reality and 3D Modeling in Built Environment Education
October 23, 2007, 12:00am PDT
This paper builds upon previous research on the integration of Virtual Reality (VR) within the built environment curriculum and aims to investigate the role of Virtual Reality and...
Provided by Northumbria University
-
Whitepapers
Multimodal Biometric Person Recognition System Based on Fingerprint & Finger-Knuckle-Print Using Correlation Filter Classifier
May 24, 2012, 12:00am PDT
Biometrics is an effective technology for personnel identity recognition, but uni-modal biometric systems which use a single trait for recognition will suffer from problems like noisy sensor data,...
Provided by Northumbria University
-
Whitepapers
Making Early Predictions of the Accuracy of Machine Learning Applications
December 6, 2012, 12:00am PST
The accuracy of machine learning systems is a widely studied research topic. Established techniques such as cross-validation predict the accuracy on unseen data of the classifier produced by...
Provided by Northumbria University
-
White Papers
The Bit Error Performance of Diffuse Indoor Optical Wireless Channel PPM System Employing Artificial Neural Networks for Channel Equalization
August 5, 2009, 12:00am PDT
The Bit Error Rate (BER) performance of a Pulse Position Modulation (PPM) scheme for non Line-Of-Sight (LOS) indoor optical links employing channel equalization based on the Artificial Neural...
Provided by Northumbria University
-
White Papers
Channel Estimation for Indoor Diffuse Optical OFDM Wireless Communications
July 31, 2008, 12:00am PDT
Pilot insertion for channel estimation in Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique for broadband/high data rate wireless communications. In indoor diffuse optical...
Provided by Northumbria University
-
White Papers
SOA Gain Uniformity Improvement Employing a Non-Uniform Biasing Technique for Ultra-High Speed Optical Routers
May 4, 2010, 12:00am PDT
In this paper, the authors propose a non-uniform biasing technique to improve the uniformity of the Semiconductor Optical Amplifier (SOA) gain for ultra-high speed applications. In ultra-high...
Provided by Northumbria University
-
White Papers
Performance Evaluation of Radio-Over-Fibre Systems Using Mach-Zehnder Modulator
August 18, 2010, 12:00am PDT
This paper investigates the Bit Error Rate (BER) performance of a Radio-over-Fibre (RoF) system utilizing the Binary Phase Shift Keying (BPSK) and quadrature phase shift keying (QPSK) at a Radio...
Provided by Northumbria University
-
White Papers
Free-Space Optical Communication Employing Polarization Shift Keying Coherent Modulation in Atmospheric Turbulence Channel
April 22, 2010, 12:00am PDT
A binary Polarization Shift Keying (2PolSK) scheme with a coherent heterodyne receiver for a Free Space Optical (FSO) link through atmospheric turbulence channel is proposed and discussed. The...
Provided by Northumbria University
-
White Papers
Performance of the Wavelet Transform-Neural Network Based Receiver for DPIM in Diffuse Indoor OpticalWireless Links in Presence of Artificial Light Interference
June 1, 2009, 12:00am PDT
Artificial Neural Network (ANN) has application in communication engineering in diverse areas such as channel equalization, channel modeling, error control code because of its capability of...
Provided by Northumbria University
-
White Papers
Optimum Design of a Probe Fed Dual Frequency Patch Antenna Using Genetic Algorithm
April 29, 2009, 12:00am PDT
Patch antennas are used in many communication systems as they are compact, have low profile and their manufacturing costs are reduced by using printed circuit technology. The main disadvantage of...
Provided by Northumbria University
-
White Papers
A Novel Chaotic Encryption Technique for Secure Communication
December 15, 2008, 12:00am PST
In this paper, a novel chaotic encryption technique is proposed to realize a secure communication system. In the proposed method, the message signal to be transmitted is first encrypted using a...
Provided by Northumbria University
-
White Papers
Current Optical Technologies for Wireless Access
June 10, 2009, 12:00am PDT
The objective of this paper is to describe recent activities and investigations on Free-Space Optics (FSO) or optical wireless and the excellent results achieved within SatNEx an EU-framework 6th...
Provided by Northumbria University
-
White Papers
Performance of Diffused Indoor Optical Wireless Links Employing Neural and Adaptive Linear Equalizers
March 4, 2008, 12:00am PST
This paper presents a comparative study of two equalizers, the adaptive linear and the neural equalizer for indoor Optical Wireless (OW) links. Three modulation schemes representative of a range...
Provided by Northumbria University
-
White Papers
Transmitter Distribution for MIMO Visible Light Communication Systems
June 2, 2011, 12:00am PDT
In the future, buildings will be lit using solid state lighting, particularly white Light Emitting Diodes (LEDs). Solid state lighting is a rapidly expanding area of research due to the...
Provided by Northumbria University
-
Whitepapers
Making Early Predictions of the Accuracy of Machine Learning Applications
December 6, 2012, 12:00am PST
The accuracy of machine learning systems is a widely studied research topic. Established techniques such as cross-validation predict the accuracy on unseen data of the classifier produced by...
Provided by Northumbria University
-
Whitepapers
Multimodal Biometric Person Recognition System Based on Fingerprint & Finger-Knuckle-Print Using Correlation Filter Classifier
May 24, 2012, 12:00am PDT
Biometrics is an effective technology for personnel identity recognition, but uni-modal biometric systems which use a single trait for recognition will suffer from problems like noisy sensor data,...
Provided by Northumbria University
-
White Papers
Transmitter Distribution for MIMO Visible Light Communication Systems
June 2, 2011, 12:00am PDT
In the future, buildings will be lit using solid state lighting, particularly white Light Emitting Diodes (LEDs). Solid state lighting is a rapidly expanding area of research due to the...
Provided by Northumbria University
-
White Papers
Performance of Diffused Indoor Optical Wireless Links Employing Neural and Adaptive Linear Equalizers
March 4, 2008, 12:00am PST
This paper presents a comparative study of two equalizers, the adaptive linear and the neural equalizer for indoor Optical Wireless (OW) links. Three modulation schemes representative of a range...
Provided by Northumbria University
-
White Papers
Current Optical Technologies for Wireless Access
June 10, 2009, 12:00am PDT
The objective of this paper is to describe recent activities and investigations on Free-Space Optics (FSO) or optical wireless and the excellent results achieved within SatNEx an EU-framework 6th...
Provided by Northumbria University
-
White Papers
A Novel Chaotic Encryption Technique for Secure Communication
December 15, 2008, 12:00am PST
In this paper, a novel chaotic encryption technique is proposed to realize a secure communication system. In the proposed method, the message signal to be transmitted is first encrypted using a...
Provided by Northumbria University
-
White Papers
Optimum Design of a Probe Fed Dual Frequency Patch Antenna Using Genetic Algorithm
April 29, 2009, 12:00am PDT
Patch antennas are used in many communication systems as they are compact, have low profile and their manufacturing costs are reduced by using printed circuit technology. The main disadvantage of...
Provided by Northumbria University
-
White Papers
Performance of the Wavelet Transform-Neural Network Based Receiver for DPIM in Diffuse Indoor OpticalWireless Links in Presence of Artificial Light Interference
June 1, 2009, 12:00am PDT
Artificial Neural Network (ANN) has application in communication engineering in diverse areas such as channel equalization, channel modeling, error control code because of its capability of...
Provided by Northumbria University
-
White Papers
Free-Space Optical Communication Employing Polarization Shift Keying Coherent Modulation in Atmospheric Turbulence Channel
April 22, 2010, 12:00am PDT
A binary Polarization Shift Keying (2PolSK) scheme with a coherent heterodyne receiver for a Free Space Optical (FSO) link through atmospheric turbulence channel is proposed and discussed. The...
Provided by Northumbria University
-
White Papers
Performance Evaluation of Radio-Over-Fibre Systems Using Mach-Zehnder Modulator
August 18, 2010, 12:00am PDT
This paper investigates the Bit Error Rate (BER) performance of a Radio-over-Fibre (RoF) system utilizing the Binary Phase Shift Keying (BPSK) and quadrature phase shift keying (QPSK) at a Radio...
Provided by Northumbria University
-
White Papers
SOA Gain Uniformity Improvement Employing a Non-Uniform Biasing Technique for Ultra-High Speed Optical Routers
May 4, 2010, 12:00am PDT
In this paper, the authors propose a non-uniform biasing technique to improve the uniformity of the Semiconductor Optical Amplifier (SOA) gain for ultra-high speed applications. In ultra-high...
Provided by Northumbria University
-
White Papers
Channel Estimation for Indoor Diffuse Optical OFDM Wireless Communications
July 31, 2008, 12:00am PDT
Pilot insertion for channel estimation in Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique for broadband/high data rate wireless communications. In indoor diffuse optical...
Provided by Northumbria University
-
White Papers
The Bit Error Performance of Diffuse Indoor Optical Wireless Channel PPM System Employing Artificial Neural Networks for Channel Equalization
August 5, 2009, 12:00am PDT
The Bit Error Rate (BER) performance of a Pulse Position Modulation (PPM) scheme for non Line-Of-Sight (LOS) indoor optical links employing channel equalization based on the Artificial Neural...
Provided by Northumbria University
-
White Papers
Virtual Reality and 3D Modeling in Built Environment Education
October 23, 2007, 12:00am PDT
This paper builds upon previous research on the integration of Virtual Reality (VR) within the built environment curriculum and aims to investigate the role of Virtual Reality and...
Provided by Northumbria University
-
White Papers
MIMO Free-Space Optical Communication Employing Subcarrier Intensity Modulation in Atmospheric Turbulence Channels
June 3, 2009, 12:00am PDT
This paper analyse the error performance of transmitter/receiver array Free-Space Optical (FSO) communication system employing Binary Phase Shift Keying (BPSK) Subcarrier Intensity Modulation...
Provided by Northumbria University
-
White Papers
Free-Space Optical Communication in Atmospheric Turbulence Using DPSK Subcarrier Modulation
May 10, 2007, 12:00am PDT
The bit error rate (BER) expression and performance of free-space optical communication link in clear but turbulent atmosphere using subcarrier intensity modulation (SIM) with differential phase...
Provided by Northumbria University
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