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Electrical and Computer Engineering

2006

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Articles 841 - 864 of 864

Full-Text Articles in Engineering

An Enhancement Of Decimation Process Using Fast Cascaded Integrator Comb (Cic), Rozita Teymourzadeh, Masuri Othman Dec 2005

An Enhancement Of Decimation Process Using Fast Cascaded Integrator Comb (Cic), Rozita Teymourzadeh, Masuri Othman

Dr. Rozita Teymourzadeh, CEng.

The over sampling technique has been shown to increase the SNR and is used in many high performance system such as in the ADC for audio and DAT systems. This paper presents the design of the decimation and its VLSI implementation which is the sub-component in the over sampling technique. The design of three main units in the decimation stage that is the Cascaded Integrator Comb (CIC) filter, the associated half band filters and the droop correction are also described. The Verilog HDL code in Xilinx ISE environment has been derived to describe the CIC filter properties and downloaded in …

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An Overview Of The Decimation Process And Its Vlsi Implementation, Rozita Teymourzadeh, Masuri Othman Dec 2005

An Overview Of The Decimation Process And Its Vlsi Implementation, Rozita Teymourzadeh, Masuri Othman

Dr. Rozita Teymourzadeh, CEng.

Digital Decimation process plays an important task in communication system. It mostly is applied in transceiver when the frequency reduction is required. However, the decimation process for sigma delta modulator is considered in this research work. The proposed design was simulated using MATLAB software and implemented by hardware description language in Xilinx environment. Furthermore, the proposed advance arithmetic unit is applied to improve the system efficiency.

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An Improved Recursive And Non-Recursive Comb Filter For Dsp Applications, Rozita Teymourzadeh, Masuri Othman Dec 2005

An Improved Recursive And Non-Recursive Comb Filter For Dsp Applications, Rozita Teymourzadeh, Masuri Othman

Dr. Rozita Teymourzadeh, CEng.

The recursive and non-recursive comb filters are commonly used as decimators for the sigma delta modulators. This paper presents the analysis and design of low power and high speed comb filters. The comparison is made between the recursive and the non-recursive comb filters with the focus on high speed and saving power consumption. Design procedures and examples are given by using Matlab and Verilog HDL for both recursive and non-recursive comb filter with emphasis on frequency response, transfer function and register width. The implementation results show that non-recursive comb filter has capability of speeding up the circuit and reducing power …

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Vlsi Implementation Of Cascaded Integrator Comb Filters For Dsp Applications, Rozita Teymourzadeh, Masuri Othman Dec 2005

Vlsi Implementation Of Cascaded Integrator Comb Filters For Dsp Applications, Rozita Teymourzadeh, Masuri Othman

Dr. Rozita Teymourzadeh, CEng.

The recursive comb filters or Cascaded Integrator Comb filter (CIC) are commonly used as decimators for the sigma delta modulators. This paper presents the VLSI implementation, analysis and design of high speed CIC filters which are based on a low-pass filter. These filters are used in the signal decimation which has the effect on reducing the sampling rate. It is also chosen because its attractive property of both low power and low complexity since it dose not required a multiplier. Simulink toolbox available in Matlab software which is used to simulator and Verilog HDL coding help to verify the functionality …

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Chapter 7 Impact Of Interconnecting Issue Of Pv/Wes With Eu On Their Reliability Using A Fuzzy Scheme, Dr. Adel A. Elbaset Dec 2005

Chapter 7 Impact Of Interconnecting Issue Of Pv/Wes With Eu On Their Reliability Using A Fuzzy Scheme, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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Chapter 5 Operation Control Strategy And Simulation Of Wtg Interconnected With Eu, Dr. Adel A. Elbaset Dec 2005

Chapter 5 Operation Control Strategy And Simulation Of Wtg Interconnected With Eu, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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Chapter 4 Design Of Wes Interconnected With Eu, Dr. Adel A. Elbaset Dec 2005

Chapter 4 Design Of Wes Interconnected With Eu, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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Definations, Dr. Adel A. Elbaset Dec 2005

Definations, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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Abstract English, Dr. Adel A. Elbaset Dec 2005

Abstract English, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

Abstract of Ph. D. Thesis Study of Interconnecting Issues of Photovoltaic/Wind Hybrid System with Electric Utility Using Artificial Intelligence By Eng. Adel A. Elbaset Submitted to Electrical Engineering Dept., Faculty of Engineering, Elminia University The overall objective of PV and WES are to obtain electricity from the sun and wind that are cost competitive and even advantageous with respect to other energy sources. The global average insolation i.e. horizontal global and wind speed in Egypt are relatively good. The design of photovoltaic wind en¬ergy system hybrid power system (PV/WES HEPS) has many difficulties if we take all economical and technical …

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Chapter 1 Introduction And Previous Work, Dr. Adel A. Elbaset Dec 2005

Chapter 1 Introduction And Previous Work, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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Power Point, Chapter 1, Dr. Adel A. Elbaset Dec 2005

Power Point, Chapter 1, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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Arabic Abstract, Dr. Adel A. Elbaset Dec 2005

Arabic Abstract, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

ملخص الرسالة "دراسة قضايا ربط نظام مختلط من منظومة فوتوفولتية و منظومة رياح مع شبكة كهربية بإستخدام الذكاء الاصطناعي" يشهد العالم إرتفاعاًَ ملحوظاَ في أسعار الوقود الحفري منذ نهاية القرن الماضي وحتي الاّن ، ويزداد هذا الإرتفاع والتناقص في المخزون يوماَ بعد يوم. ولهذا فقد إتجهت أنظار الباحثين في مجال توليد القدرة الكهربية إلي التوسع في إستغلال مصادر الطاقة الغير تقليدية وبصفة خاصة مصادر الطاقة الجديدة والمتجددة. وتعتبر الطاقة الجديدة والمتجددة من الطاقة التي لا تنضب بالاستخدام لأنها تعتمد علي مصادر طبيعية متجددة ، ومن أمثلة هذه المصادر الشمس، والرياح، والمد والجزر، حرارة باطن الأرض …………..الخ. ولقد أصبح استغلال هذه …

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Examining Committee, Dr. Adel A. Elbaset Dec 2005

Examining Committee, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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References, Dr. Adel A. Elbaset Dec 2005

References, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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Power Point, Chapter 3, Dr. Adel A. Elbaset Dec 2005

Power Point, Chapter 3, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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Power Point, Chapter 2, Dr. Adel A. Elbaset Dec 2005

Power Point, Chapter 2, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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A_ Cover, Dr. Adel A. Elbaset Dec 2005

A_ Cover, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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Contents, Dr. Adel A. Elbaset Dec 2005

Contents, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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Computer Programs, Dr. Adel A. Elbaset Dec 2005

Computer Programs, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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Chapter 8 Conclusions And Suggestions For Future Work, Dr. Adel A. Elbaset Dec 2005

Chapter 8 Conclusions And Suggestions For Future Work, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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Chapter 3 Operation Control Strategy And Simulation Of Pv System Interconnected With Eu, Dr. Adel A. Elbaset Dec 2005

Chapter 3 Operation Control Strategy And Simulation Of Pv System Interconnected With Eu, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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Chapter 6 Design And Control Strategy Of Pv/Wes Heps Interconnected With Eu, Dr. Adel A. Elbaset Dec 2005

Chapter 6 Design And Control Strategy Of Pv/Wes Heps Interconnected With Eu, Dr. Adel A. Elbaset

Dr. Adel A. Elbaset

No abstract provided.

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An Overview Of Mac Protocols With Directional Antennas In Wireless Ad Hoc Networks, Hong-Ning Dai, Kam-Wing Ng, Min-You Wu Dec 2005

An Overview Of Mac Protocols With Directional Antennas In Wireless Ad Hoc Networks, Hong-Ning Dai, Kam-Wing Ng, Min-You Wu

Hong-Ning Dai

Although directional antennas have been used in mobile communications systems for quite a long time, realistic applications of directional or smart antennas in wireless ad hoc network have emerged just in recent years. Directional antennas provide numerous benefits, such as higher gains, increased transmission range and low interferences. Wireless medium access schemes play a crucial role in ensuring the efficient and fair sharing of wireless resources. Therefore there are many research work on mechanisms at the wireless medium access layer by using directional antennas. The new features of MAC with directional antennas can cause not only location dependent carrier sensing …

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Controlled Generation Of Hard And Easy Bayesian Networks: Impact On Maximal Clique Size In Tree Clustering, Ole J. Mengshoel, David C. Wilkins, Dan Roth Dec 2005

Controlled Generation Of Hard And Easy Bayesian Networks: Impact On Maximal Clique Size In Tree Clustering, Ole J. Mengshoel, David C. Wilkins, Dan Roth

Ole J Mengshoel

This article presents and analyzes algorithms that systematically generate random Bayesian networks of varying difficulty levels, with respect to inference using tree clustering. The results are relevant to research on efficient Bayesian network inference, such as computing a most probable explanation or belief updating, since they allow controlled experimentation to determine the impact of improvements to inference algorithms. The results are also relevant to research on machine learning of Bayesian networks, since they support controlled generation of a large number of data sets at a given difficulty level. Our generation algorithms, called BPART and MPART, support controlled but random construction …

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