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Browsing Elektronik ve Haberleşme Mühendisliği Bölümü by Issue Date

Browsing Elektronik ve Haberleşme Mühendisliği Bölümü by Issue Date

Now showing items 1-20 of 115

Performance analysis of detection techniques in direct sequence code division multiple access (DS-CDMA) communication systems

Alat, Gökçen (2004-01)

DS-CDMA is a new technology providing significant progress in wireless communication. Each user is distinguished by a unique spreading code to modulate an information signal. There are two factors limiting a DS- CDMA system: ...
The application of BDW method to the plane diffraction problem from PEC half plane

Ali, Aysha (2006-08-28)

Diffraction is a phenomenon by which wavefronts of propagating waves bend in the neighborhood of obstacles. Diffraction around apertures is described approximately by the diffraction wave method. Diffraction problems are ...
VHF data technology in air traffic services

Bellikli, Ahmet Eren (2006-09-11)

In this thesis, we have introduced communication, navigation and surveillance system?s working principles and bottlenecks based on working performances used in Air Traffic Control systems. We investigated the possible ...
Multiuser detection in cdma system and its simulation in Matlab

Çakır, Burhan (2007-05-31)

In this thesis, we investigated performance of uncoded and with convolutional coded direct sequence code division multiple access (DS-CDMA) with decorrelating detection communication systems in additive white Gauss noise ...
General optical beam formulation and their propagation in atmospheric optical telecommunication links

Yazıcıoğlu, Canan (2007-06-12)

In this thesis, we have developed a general source beam to combine many types of different beams such as Bessel, Bessel Gaussian, Laguerre, Laguerre Gaussian, Ince Gaussian, dark hollow, bottle, super Gaussian, Lorentz, ...
Effects of beam types in the performance of free space optics systems

Tatgın, Deniz (2008)

Bu tezde, birçok hüzme tipini birleştiren bir genel ışık kaynağı formülü geliştirildi. Genel kaynak ışık hüzmesi formulünde farklı paremetre setleri kullanılarak, farklı ışık hüzmelerinin kaynak denklemleri elde edildi. ...
Public safety communication services requirement and their applications in the Turkish geographic structure

Usta, Mesut Bedri (2008-01-17)

Türkiye is a country which may face with many natural and social disasters due to the geography surrounding it. In this context, fast and effectual intrusion to the disasters is vital for the comfort and prosperity of the ...
Diffraction of the packet-like and nondiffracting propagating beams by an obstacle in the atmosphere

Kara, Mustafa (2008-06-11)

This thesis takes two different solutions of homogenous wave equation into consideration. These solutions are named as packet-like solution and non-diffracting beam.First of all the propagation of these waves in the ...
Diffraction of electromagnetic waves by impedance slits and strips

Coşkun, Galip Çağlar (2008-06-11)

In this thesis, diffraction process of electromagnetic waves by strips and slits will be examined by using the methods of the physical optics (PO) and modified theory of physical optics (MTPO) that have impedance boundary ...
Analysis and observation on quality of service for data networks of turkish telecommunication infrastructure

Demirel, Mustafa (2008-06-20)

In this thesis, Jitter, Delay and Packet Loss values are measured for different points on TT IP/MPLS Backbone and compared with acceptable values. Measurements are made by using TT’s Alcatel 7750-SR12 devices which run in ...
Effects of beam types in the performance of free space optics systems

Tatgin, Deniz (2008-09-19)

In this thesis, a general light source beam formula is developed which combines many beam types. Using different parameter sets in the general source beam formula, we obtained different beam’s source equations. Using Matlab, ...
Use of leds as future light sources

Demirel, K. Volkan (2009-06-17)

LEDS are conventionally used as indicators in control panels, and also for light sources in low power optic communication applications. Recently, high power and more efficient LEDs have appeared on the market. This study ...
Design of mobile DVB-T single frequency network(SFN) to cover İstanbul-Ankara highway

Özgün, Hüseyin (2009-09-01)

In this thesis, it is aimed to implement a DVB-T Single Frequency Network (SFN) for mobile reception which will cover the populated area of İstanbul, the İstanbul-to-Ankara-Highway, E-5 Road and the populated area of Ankara ...
500MHz-2GHz broadband power amplifier design by non-linear modeling methods

Ünal, Gökalp (2009-09-01)

This thesis presents the design methods of 500MHz-2GHz broadband RF power amplifier. First of all, RF power transistor technologies are searched and the most suitable one is chosen according to its operation of frequency ...
Regulation and competition aspects of wimax services in Turkey

Tilkioğlu, Ahmet Kerem (2009-09-01)

In recent years, especially the last decade, Broadband Wireless Access (BWA) Services have been rapidly developed and deployed to the world step by step. Nowadays, this development leads authorities to the field of ...
Field measurement of 3g base station

Has, Ahmet Can (2010-01-18)

3G mobile communication systems launched after some hardware and software changes on existing systems. After these changes operators have new services for subscribers. In this thesis, our target is to find problems, which ...
Iterative decoding of block codes

Genç, Fatih (2010-09-01)

Error control coding is vital for digital communication. With the advent of turbo codes a huge interest on iterative decoding aroused recently. Although iterative decoding reduces bit error rate (BER) significantly, it ...
Nonuniform currents flowing on a perfectly conducting cylinder

Başdemir, Hüsnü Deniz (2010-09-02)

In this thesis, we applied physical theory of diffraction method to the perfectly electric conducting cylinder for investigation of the scattering fields. Physical optics method was used for obtain the uniform scattering ...
Heating effect of electromagnetic fields on human head at gsm frequencies

Türk, Afşar (2010-09-02)

This thesis investigates the heating effect of electromagnetic fields on human head at GSM (Global System for Mobile Communications) frequencies. First of all, existing structure was studied. In this work, the existing ...
Radar cross section of a conducting flat plate by the method of modified theory of physical optics

Çınar, Ayşe Tila (2010-09-02)

In this thesis, reflected scattered fields from a conducting rectangular flat plate, and its edges and corners are observed, calculated and analyzed by using the Method of Modified Theory of Physical Optics. In the ...

Now showing items 1-20 of 115

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Browsing Elektronik ve Haberleşme Mühendisliği Bölümü by Issue Date

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