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  1. No Access

    Article

    Pilot Tones Design for Channel Estimation Using Elephant Herding Optimization Algorithm in Massive MIMO Systems

    Today, the increase in the demand for mobile communication and the increasing need for data transfer have reached great dimensions. In order to meet this need, multi-input multi-output (MIMO) can be increased ...

    Necmi Taşpınar, Adem Ergeç, Burak Kürşat Gül in Wireless Personal Communications (2023)

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    Article

    Advanced SLM scheme based on discrete forest optimization algorithm for PAPR minimization in UFMC waveform

    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...

    Necmi Taşpınar, Şakir Şimşir in Wireless Networks (2021)

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    Article

    Peak-to-Average Power Ratio Reduction in Lifting Based Wavelet Packet Modulation Systems Using Differential Evolution Algorithm

    Integer wavelet transform (IWT) is an alternative to fast Fourier transform (FFT) in orthogonal frequency division multiplexing (OFDM) systems. It serves implementation flexibility and performance improvement ...

    Yüksel Tokur Bozkurt, Necmi Taşpınar in Wireless Personal Communications (2017)

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    Article

    Channel Estimation Using Radial Basis Function Neural Network in OFDM–IDMA System

    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 mul...

    Şakir Şimşir, Necmi Taşpınar in Wireless Personal Communications (2015)

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    Article

    Pilot Tones Optimization Using Artificial Bee Colony Algorithm for MIMO–OFDM Systems

    How to design the pilot tones that are used in channel estimation has a significant effect on the estimation performance. To achieve good performance in least square (LS) algorithm, we propose the artificial b...

    Muhammet Nuri Seyman, Necmi Taşpınar in Wireless Personal Communications (2013)

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    Article

    Neural Network Based Receiver for Multiuser Detection in MC-CDMA Systems

    In this paper, we present a multiuser detection technique based on artificial neural network (NN) for synchronous multicarrier code division multiple access systems over Rayleigh fading channels. To test the r...

    Necmi Taşpınar, Metin Çiçek in Wireless Personal Communications (2013)

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    Article

    Multiuser detection with neural network and PIC in CDMA systems for AWGN and Rayleigh fading asynchronous channels

    In this paper, multiuser detection in code division multiple access (CDMA) was performed by using neural network (NN) and parallel interference cancellation (PIC). Neural network is used as a front-end stage o...

    Yalçın Işık, Necmi Taşpınar in Wireless Personal Communications (2007)