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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 ...
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Article
Bidirectional intensity modulated/direct detection optical OFDM WDM-PON system
In this paper, we have evaluated a bidirectional wavelength division multiplexing passive optical network (WDM-PON) employing intensity modulated/direct detection optical orthogonal frequency division multiple...
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Chapter and Conference Paper
PSO and GA-Based RA Schemes for 5G Networks for D2D Communication
Device-to-device D2D communication is considered one of the most important technologies in 5G networks. Throughput of the network increases when using the D2D communication, and the increase is evident in the ...
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Article
An improved PTS scheme based on a novel discrete invasive weed optimization algorithm for PAPR reduction in the UFMC signal
Multicarrier transmission strategy provides great benefits in wireless communication technology. For this reason, all of the waveform contenders proposed for the fifth generation and beyond technologies are bu...
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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...
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Article
Pilot tones design using particle swarm optimization for OFDM–IDMA system
Since the channel estimation performance is directly affected by the pilot positions, it has been a major task in multicarrier transmission schemes to adjust the pattern of pilot distribution for the purpose o...
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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 ...
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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...
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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...
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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...
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Article
Down Syndrome Diagnosis Based on Gabor Wavelet Transform
Down syndrome is a chromosomal condition caused by the presence of all or part of an extra 21st chromosome. It has different facial symptoms. These symptoms contain distinctive information for face recognition...
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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...
