Yazar "Kurnaz, Cetin" için listeleme
-
Approach for determining the optimum pilot placement in orthogonal frequency division multiplexing systems
Engiz, Beguem Korunur; Kurnaz, Cetin; Sezgin, Hatice (Inst Engineering Technology-Iet, 2015)One of the major concerns in wireless communications is multipath fading that causes some adverse effects and significantly limits the performance of a system. To overcome these effects in orthogonal frequency division ... -
Assessment of short/long term electric field strength measurements for a pilot district
Kurnaz, Cetin; Yildiz, Dogan; Karagol, Serap (De Gruyter Poland Sp Zoo, 2018)The level of electromagnetic radiation (EMR) exposure increases day by day as natural consequences of technological developments. In recent years, the increasing use of cellular systems has made it necessary to measure and ... -
Characterization of Indoor and Outdoor Electric Field Strength Levels at Hospitals
Kurnaz, Cetin; Aygun, Tulay (Ieee, 2018)In this study, electrical field strength (E) level measurements were conducted in indoor and outdoor at seven hospitals in the city center of Samsun/Turkey. E measurements were made with Narda SRM-3006 electromagnetic field ... -
Comprehensive radiofrequency electromagnetic field measurements and assessments: a city center example
Kurnaz, Cetin; Mutlu, Mustafa (Springer, 2020)In this study, radiofrequency electromagnetic field (RF-EMF) measurements were carried out between 2016 and 2018 in one the largest provinces of Turkey; measurement results are compared with the limit values determined by ... -
Describing the Optimum Pilot Symbol Interval via Curve Fitting Methods in OFDM System
Engiz, Begum Korunur; Kurnaz, Cetin; Sezgin, Hatice (Ieee, 2014)Increasing demand on higher data rates, makes multi carrier systems popular. Orthogonal frequency division multiplexing (OFDM), a form of multicarrier modulation, has been widely applied in wireless communication systems ... -
Detection of High Level Cholesterol in Blood with Iris Analysis
Gul, Burak Kursat; Kurnaz, Cetin (Ieee, 2016)Iris, as well as being very useful in the area of identification can provide information about the health status of the organs and tissue in the body. Determination of high cholesterol in the blood, like many other diseases, ... -
Determination of the Optimum Pilot Density for an OFDM System over Empirical Channels
Engiz, Begum Korunur; Kurnaz, Cetin; Sezgin, Hatice (Ieee, 2013)In orthogonal frequency division multiplexing (OFDM) systems, in order to overcome distortion caused by multipath fading, channel estimation is performed. Pilot symbol assisted channel estimation is effectual way to obtain ... -
Determination of the relationship between sodium ring width on iris and cholesterol level
Kurnaz, Cetin; Gul, Burak Kursat (Gazi Univ, Fac Engineering Architecture, 2018)The sodium ring, which is one of the symptoms of high cholesterol, is a colored ring close to the whiteness formed around the iris. The examination of this ring and its follow up can be considered as an alternative to ... -
Determination of the Sources of Electric Field Strength in a Medium by Artificial Neural Network
Kurnaz, Cetin; Engiz, Begum Korunur; Kayhan, Gokhan (Ieee, 2017)This study aims to determine total electric field strength (E) levels and its main sources in Samsun city center. To reach this goal extensive E and band selective E measurements were performed using Narda SRM 3006. The ... -
Determination of TV White Space Spectrum Availability in Samsun Turkey
Kurnaz, Cetin; Engiz, Begum Korunur; Albayrak, Zafer Emre (Ieee, 2016)In this study, available Television White Space (TVWS) spectrums were measured and evaluated in Samsun Turkey. The measurements were performed within 470 MHz -790 MHz band, at ten locations which are differently distanced ... -
Distribution Fitting for Long Term Electric Field Strength Measurements
Kurnaz, Cetin; Engiz, Begum Korunur (Ieee, 2017)As a result of the enormous increase in usage of wireless systems; electromagnetic radiation (EMR) sources in residential areas as well as the exposed EMR levels has increased significantly. Therefore this study aims to ... -
The Effect of Pilot Density for MIMO-OFDM System over Doubly Selective Fading Channels
Ercan, Seda Ustun; Kurnaz, Cetin (Ieee, 2014)In MIMO-OFDM system which allows high data rate communications in order to increase system performance channel state information (CSI) is needed. CSI is determined by using channel estimation algorithms and then channel's ... -
The Effect of Wireless Radio Channel on WCDMA System with Paralel Interference Cancellation
Kose, Ugur; Ozen, Adil Emre; Kurnaz, Cetin (Ieee, 2015)In CDMA based systems with the use of multiuser detection (MUD) methods the effects of multiple access interference (MAI) can be decreased and system performance can be increased. One of these methods which is parallel ... -
An Empirical Modeling of Electromagnetic Pollution on a University Campus
Kurnaz, Cetin (Applied Computational Electromagnetics Soc, 2018)In this study, electric field strength (E) levels were measured on Ondokuz Mayis University's Kurupelit Campus and Faculty of Medicine Hospital in Samsun, Turkey between years 2013-2015. 840 short term and two long term ... -
An Empirical Study: the Impact of the Number of Users on Electric Field Strength of Wireless Communications
Kurnaz, Cetin; Engiz, Begum Korunur; Kose, Ugur (Oxford Univ Press, 2018)As a result of the drastic increase in the number of mobile device users, there is considerable public debate about possible health hazards especially due to base stations and Wi-Fi access points. For this reason, in this ... -
Evaluating Exposure to Short and Long Term Electromagnetic Fields in a Hospital
Kurnaz, Cetin; Aygun, Tulay (Ieee, 2018)In this study, short and long term electromagnetic field measurements were conducted in a hospital in Samsun city center; whether there is a risk or not for patients and employees were investigated. E measurements were ... -
The Impact of Coding and Noise on Iris Recognition System Performance
Gul, Burak Kursat; Kurnaz, Cetin (Ieee, 2016)The use of biometric recognition system that use the humans' specific characteristics electronically is increasing every day. Iris recognition system is a very effective and popular biometric recognition system. The system ... -
Investigating MC-CDMA System Performance Using Measurement-Based Channel Models
Kurnaz, Cetin; Goekalp, Huelya (Ieee, 2008)This paper investigates the performance of the downlink in Multi Carrier CDMA (MC-CDMA) systems using a channel model from in-the-field propagation measurements. Results are presented also for channel models having ... -
Investigating the Effect of Number of Users on Signal Strength Level and Throughput for Wi-Fi System
Kurnaz, Cetin; Engiz, Begum Korunur; Kose, Ugur (Ieee, 2017)In this study, the effect of the number of users in a Wi-Fi access point on signal strength and throughput is investigated. For this purpose, measurement environment was set as including one Wi-Fi access point, needed ... -
Investigating the relation between optimum guard interval and channel delay spread for a MC-CDMA system
Kurnaz, Cetin; Gokalp, Hulya (Tubitak Scientific & Technical Research Council Turkey, 2012)This paper demonstrates a novel approach to determining the optimum guard interval for a multicarrier code division multiple access (MC-CDMA) system. Analytical expressions for useful and interference power are derived as ...
