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Yazar "Nevşehir Hacı Bektaş Veli Üniversitesi/mühendislik-mimarlık fakültesi/elektrik-elektronik mühendisliği bölümü/telekomünikasyon anabilim dalı" için Elektrik-Elektronik Mühendisliği Bölümü Koleksiyonu listeleme

Toplam kayıt 42, listelenen: 1-20

Sonraki Sayfa

A chaotic synhronization of double convection

Bulut, Gülden Günay; Güler, Hasan (2018)

The concept of chaos is used to describe irregularity and disordianance situations in daily life, as well as to describe the complex behavior of nonlinear systems in engineering. The complex behavior of chaotic systems ...
A novel discrete cuckoo search algorithm‐based selective mapping technique to minimize the peak‐to‐average power ratio of universal filtered multicarrier signal

Şimşir, Şakir; Taşpınar, Necmi (2020)

The universal filtered multicarrier (UFMC), which has emerged as a product of the intensive studies carried out for developing alternative waveforms compatible with the oncoming fifth generation (5G) technology, has rapidly ...
A parallel implementation of seeker optimization algorithm for designing circular and concentric circular antenna arrays

Guney, Kerim; Başbuğ, Suad (2014)

In this paper, a parallel version of seeker optimization algorithm (SOA) is proposed for designing circular and concentric circular antenna arrays with the low sidelobe levels at a fixed beamwidth. The SOA is a relatively ...
A plant growth simulation algorithm for pattern nulling of linear antenna arrays by amplitude control

Guney, Kerim; Basbug, Suad (2009)

A method based on plant growth simulation algorithm (PGSA) is presented for pattern nulling by controlling only the element amplitudes of linear antenna array. The PGSA is a new and highly efficient random search algorithm ...
A quantized water cycle optimization algorithm for antenna array synthesis by using digital phase shifters

Guney, Kerim; Başbuğ, Suad (2015)

In this article, a quantized water cycle algorithm (QWCA) is used for the antenna array pattern synthesis with low side-lobe levels (SLLs) and nulls at desired directions by using four-bit digital phase shifters. In addition ...
Advanced pilot design procedure based on HS algorithm for OFDM-IDMA system

Şimşir, Şakir; Taşpınar, Necmi (2018)

The direct effect of the pilot positions to the channel estimation performance gives an opportunity for minimising the estimation errors in multicarrier transmission technologies. To this end, harmony search (HS) algorithm ...
Advanced SLM scheme based on discrete forest optimization algorithm for PAPR minimization in UFMC waveform

Taşpınar, Necmi; Şimşir, Şakir (2021)

Inherent multicarrier transmission mechanism of the universal filtered multicarrier (UFMC) waveform engenders the problem of high peak-to-average power ratio (PAPR). Since it is impossible for a nonlinear high power amplifier ...
An efficient SLM technique based on migrating birds optimization algorithm with cyclic bit flipping mechanism for PAPR reduction in UFMC waveform

Taşpınar, Necmi; Şimşir, Şakir (2020)

The peak-to-average power ratio (PAPR) is one of the most serious issues to be dwelled on, carefully, in wireless communication. It is not possible to take the advantage of multicarrier transmission strategy without handling ...
An efficient technique based on firefly algorithm for pilot design process in OFDM-IDMA systems

Taşpınar, Necmi; Şimşir, Şakir (2018)

Accurate placement of pilot tones has been a crucial task in multicarrier transmission technologies since there is a strong relation between pilot positions and channel estimation performance. Therefore, the firefly algorithm ...
An implementation of chaotic circuits with multisim-labVIEW

Bulut, Gülden Günay; Şahin, Muhammet Emin; Güler, Hasan (2017)

In last decades, chaos phenomenon and chaotic systems are defined as a nonlinear behavior have received a plenty of attention. In many areas, a chaotic system is used due to chaotic signals depend very sensitively on ...
Analysis of fault ride through capability improvement of the permanent magnet synchronous generator based on WT using a BFCL

Altan, Gencer (2021-06-12)

Recently, the number of wind farms, which is converted from wind energy to electricity, is increasing every day. Therefore, the connect wind turbines to the grid system is vital issues. A bridge type fault current limiter ...
Antenna array synthesis and failure correction using differential search algorithm

Guney, Kerim; Durmus, Ali; Başbuğ, Suad (2014)

Differential search (DS) optimization algorithm is proposed for the synthesis of three different types of linear antenna array design examples. The first group of examples is that DS algorithm is used to locate wide nulls ...
Backtracking search optimization algorithm for synthesis of concentric circular antenna arrays

Guney, Kerim; Durmus, Ali; Başbuğ, Suad (2014)

A backtracking search optimization algorithm (BSA) is proposed for the synthesis of concentric circular antenna arrays (CCAAs) with the low sidelobe levels at a fixed beamwidth. Several numerical examples of CCAA patterns ...
Bacterial foraging algorithm for null synthesizing of linear antenna arrays by controlling only the element positions

Guney, Kerim; Başbuğ, Suad (2011)

A method based on the bacterial foraging algorithm (BFA) for the pattern synthesis of linear antenna arrays with the prescribed nulls is presented. Nulling of the pattern is achieved by controlling only the element positions. ...
Bio-inspired pilot design approach based on genetic algorithm for OFDM-IDMA scheme

Taşpınar, Necmi; Şimşir, Şakir (2020)

It is well known that the efficiency of a channel estimator employing the strategy of comb-type pilot placement can be controlled by adjusting the positions of pilot tones. In this paper, by considering this situation, in ...
Channel estimation techniques in OFDM-IDMA systems

Taşpınar, Necmi; Şimşir, Şakir (2014)

In this paper, pilot based channel estimation techniques for orthogonal frequency division multiplexing-interleave division multiple access (OFDM-IDMA) systems are investigated. Least Squares (LS) and Minimum Mean Square ...
Channel estimation using an adaptive neuro fuzzy inference system in the OFDM-IDMA system

Taşpınar, Necmi; Şimşir, Şakir (2017)

In this paper, a channel estimator based on an adaptive neuro fuzzy inference system (ANFIS) is proposed for the purpose of estimating channel frequency responses in orthogonal frequency division multiplexing-interleave ...
Channel estimation using neural network in Orthogonal Frequency Division Multiplexing-Interleave Division Multiple Access (OFDM-IDMA) system

Şimşir, Şakir; Taşpınar, Necmi (2014)

In this paper, channel estimation based on neural network trained by Levenberg-Marquardt Algorithm is proposed to estimate the channel coefficients in Orthogonal Frequency Division Multiplexing-Interleave Division Multiple ...
Channel estimation using radial basis function neural network in OFDM-IDMA system

Şimşir, Şakir; Taşpınar, Necmi (Springer, 2015)

In this paper, channel estimation based on Radial Basis Function Neural Network (RBFNN) is proposed to estimate channel frequency responses in orthogonal frequency division multiplexing–interleave division multiple access ...
Chaotic systems based real-time implementation of visual cryptography using LabVIEW

Bulut, Gülden Günay; Çatalbaş, Mehmet Cem; Güler, Hasan (International Information and Engineering Technology Association, 2020)

In recent years, chaotic systems have begun to take a substantial place in literature due to increasing importance of secure communication. Chaotic synchronization which has emerged as a necessity forsecure communication ...