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Browsing Computer Engineering by Issue Date

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Now showing items 1-20 of 174

Experimental Verification of Image Perturbation Theory as Applied to the Accuracy of Area Measurement

Hailu, Getacbew (Addis Ababa University, 1992-02)

photosensitive array, with inter-element spacing of & = 3cm is described. A mathematical formulation of perturbation applied to length & area measurement and contour detection is reviewed and presented. A description ...
Frequency Hop Spread Spectrum System Communication System

Befekadu, Endale (Addis Ababa University, 2003-01)

Among the various types of the spread spectrum systems the slow frequency hop spread spectrum system is discussed.In the transmitter the data input ,which is, text is converted to binary data by the ASCII code conversion ...
Simulation of A Mobile Radio Communication.

Haddis, Robel (Addis Ababa University, 2003-02)

The Implementation of A Simulation Environment For Mobile Communication Is Very Significant For Engineers And Researchers of A Mobile Communication Since It Enables Them To Work In A Environment That Is Almost Similar ...
Fingerprint Recognition Using Hybrid Matching Algorithm

Melese, Biniyam (2003-08)

Fingerprint matching is one of the most important problems in fingerprint recognition system. Generally, fingerprint matching algorithm can be classified into two: minutiae based and non‐minutiae based. In minutiae based ...
Quantum Detection- Optimal Quantum Receiver Performance Analysis For Free Air Channel

Oumer, Abdulrezak (Addis Ababa University, 2004-02)

T h e f u n d ame n t a l p e r f o rma n c e l imi t s o f o p t i c a l c ommu n i c a t i o n s s y s t ems o p e r a t i n g o v e r t h e f r e e - s p a c e c h a n n e l wi l l b e e x ami n e d u s i n g q u a n ...
ADAPTIVE ANTENNA ARRAY ALGORITHMS AND THEIR IMPACT ON CODE DIVISION MULTIPLE ACCESS SYSTEMS (CDMA).

Hadgu, Dereje (Addis Ababa University, 2004-03)

In mobile communications there is a need to increase the channel capacity. The increasing demand for mobile communication services without a corresponding increase in RF spectrum allocation (channel capacity) motivates the ...
Implementation of Energy-Efficient Routing Protocols for Mobile Ad hoc Networks (MANET

Girma, Dereje (Addis Ababa University, 2004-08)

The nodes in a mobile ad hoc network also form its routing infrastructure. Previous research shows that the idle power consumption in the nodes is significant, as the network interfaces on them is always on in order to ...
Evaluation of Various Routing Protocols for Mobile Ad-Hoc Networks (Manets

Awash, Etsegenet (Addis Ababa University, 2004-09)

Mobile Ad-hoc NETwork (MANET), which is a concept of mobile communication without a fixed communication infrastructure, is one of the current emerging technologies gaining much attention from both researchers and users. ...
Field Weakening Control of Pmsm

Fita, Daniel (Addis Ababa University, 2005-01)

This master thesis deals with control of PM motor with field weakening capability for electric vehicle (EV) application .A PMSM motor model has been analyzed in a drive able to control the motor both in the constant-torque ...
Incrementally Autonomous Light Weight Agent Architectures for Optimization Task

Asnake, Nardos (Addis Ababa University, 2005-03)

An agent oriented software engineering paradigm has been applied in solving engineering problems. In this work, agent architecture is developed that is suitable to solve a given problem. The system is developed progressively ...
Comparative Study of Burst Error Correcting Capability of Cyclic and Convolutional Codes on Different Channels

Desalegn, Genetu (Addis Ababa University, 2005-06)

Environmental interference and physical defects in the communication medium can cause Errors during data transmission. Coding is a method of detecting and correcting these errors to Ensure that information is transferred ...
ASSESMENT OF NEXT GENERATION NETWORK, SERVICES AND MIGRATION STRATEGIES The Case of Ethiopian Telecommunication Corporation

Abrha, Bewket (Addis Ababa University, 2005-08)

The development of telecommunication systems during the past two decades has been from the circuit switched towards the packet switched paradigm. Initially a distinction was made between telecommunications and computer ...
Source-Channel Prediction for Error Resilient Video Coding

Negash, Kibrom (Addis Ababa University, 2005-09)

Over recent decades the role of image in the communication of information has grown steadly. Advances in technologies underlying the capture, transfer, storage, and display of images as a means of communicating information ...
Speech to Text Conversion Using Amharic Characters

Tsegaye, Nebiyou (Addis Ababa University, 2005-12)

Spoken language is the primary method of human to human communication. This communication by spoken language is now extended by use of technologies such as telephony, radio, etc. These technological advancements reflect ...
Development of Computer Program and Preparation of Design Aids for Commonly Used Sections of Rc Shear Wall Systems

Mebrahtu, Kibrealem (Addis Ababa University, 2005-12)

In this paper capacity of commonly used reinforced concrete shear wall systems (rectangular, I-shaped, channel shaped, T and L-shaped) is graphically presented in order to provide design aids for the designers. When the ...
Grid Computing – Testbed and Application

Asalefew, Abyot (Addis Ababa University, 2006-03)

Grid computing, which is a type of parallel and distributed system that enables the sharing, selection, and aggregation of geographically distributed "autonomous" resources, is one of the currently emerging computing ...
Intrusion Detection System for Mobile Ad-Hoc Networks (Manets)

Desalegn, Konjit (Addis Ababa University, 2006-04)

The term wireless networking refers to technology that enables two or more computing devices to communicate using standard wireless networking protocols. Strictly speaking, any communication technology that uses such a ...
Face Recognition Using Artificial Neural Network

Endeshaw, Sentayehu (Addis Ababa University, 2006-08)

In recent years, an explosion in research on pattern recognition systems using neural network methods has been observed. Face Recognition (FR) is a specialized pattern recognition task for several applications such as ...
A survey on VLSI routing-algorithms and implementation

W /Gebriel, Fasil (Addis Ababa University, 2006-09)

VLSI (Very Large Scale Integration) physical design automation has been an area of great interest for the researchers in integrated circuit design. In earlier times physical design was done manually. The manual generation ...
Design and Simulation of Multiband Microstrip Patch Antenna for Mobile Communications

Mammo, Daniel (Addis Ababa University, 2006-09)

In this thesis work a single band microstrip patch antenna having a narrow operating bandwidth around the GSM900 band is designed. Theoretical analysis and design was performed by the Finite Difference Time Domain (FDTD) ...

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