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Copyright of SDU Journal of Engineering Sciences & Design / Mühendislik Bilimleri ve Tasarım Dergisi is the property of Journal of Engineering Sciences & Design and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In this article, the Integrated M-SIW (Microstrip-Substrate Integrated Waveguide) band-pass filter-patch antenna (IMBPF-PA) design with 5.90 GHz resonant frequency and the out-of-band suppression is presented, produced and measured for 5G applications using the CST (Computer Simulation Technology) Studio Suite program. The out-ofband frequencies in the 1.50-12.00 GHz wide operating frequency region are suppressed in the BPIGF-PA design. The antenna gain increase in the simulation results of the filter-antenna compared to the patch antenna is 0.32% and the in-band frequency range increase is 22%. In the measurement, the antenna gain increase was 0.78% and the in-band frequency range increase was 14.4%. [ABSTRACT FROM AUTHOR]

Copyright of International Journal of Engineering Research & Development (IJERAD) is the property of International Journal of Engineering Research & Development and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The non-orthogonal multiple access (NOMA) technique developed for 5G next generation communication technology which has some promises such as providing high spectral efficiency has been the key point of researches lately. A new structure has been obtained by integrating the heterogeneous NOMA technique with the multiple input multiple output (MIMO) technique, which provides high data rate. Providing transmission with more than one antenna in this structure causes problems such as high cost, system complexity and excessive power consumption. Antenna selection has been the subject of this article in order to eliminate or minimize the problem. As a result of the literature studies on this subject, it has been noticed that the maxmax-max and max-min-max antenna selection algorithms are frequently used. However, only the speed performances of the algorithms were examined and other parameters were not evaluated in the studies. Here BER, outage probability, capacity analyzes of algorithms are discussed and simulation studies are carried out using MATLAB/Simulink program. From the results obtained, it was concluded that the BER values of the user who is close to the base station are better than the user who is far away, and as the distance to the base station decreases, the BER values improve, the capacity increases and the outage probability decreases. [ABSTRACT FROM AUTHOR]

Software Defined Networking (SDN) and Network Functions Virtualization (NFV) are two key technologies underlying 5G networks. For routing traffic in a secure way in 5G networks, virtual network security functions (VNSF) that are virtualized by NFV, such as intrusion detection system and firewall etc. are deployed on the SDN architecture. In addition to routing network traffic securely via VNSFs, there are also some operational objectives (cost minimization, load balancing, etc.) that need to be considered in terms of the operation of 5G services. In this regard, in this study, it is aimed to route traffic flows according to their security needs through VNSFs which are placed in an energy-efficient manner in a 5G network where users may have different security service subscriptions. To this end, a heuristic algorithm aiming to minimize energy consumption in 5G architectures is proposed, and a novel SDN controller that forwards network traffic according to the results of the algorithm is designed and developed. As a result, it is concluded that the developed SDN controller can effectively route network traffic in terms of the QoS parameters including throughput, end-to-end latency, and packet loss rate, etc., and maximum loss rate is measured as 0.4%. [ABSTRACT FROM AUTHOR]

Today, the effects of dyes on the environment and life health are important scientific issues. In this paper, for the first time, we report the histopathological and ecotoxicological studies of Maxilon blue 5G on earthworms as very important organisms for soil structure. Earthworms was exposed to Maxilon blue 5G by direct injection method with different doses in a range of 1.0- 8000 mg L-1 for 48 h. The experimental analysis showed that some considerable morphological abnormalities in the earthworms were detected with the injection of 5000 mg L-1 and 8000 mg L-1 of Maxilon blue 5G dosages. LD50 values of Maxilon Blue 5G in earthworms’ experiments were calculated as 6324.56 mg L-1 after 48 h, and these values are the first experimental findings for the literature. The findings of the study were supported by histopathological investigations that are many severe tissue damages that were observed in the intestine and the whole body of earthworms injected with a high dosage of Maxilon blue 5G. [ABSTRACT FROM AUTHOR]

In this study, 4 port massive Multiple–Input–Multiple–Output (MIMO) antenna design has been developed in the 5G candidate frequency band. The MIMO antenna structure consists of a rectangle, a circle, and a ground plane. MIMO antenna size is 35x50x0.76mm3. According to the S11 parameter, the bandwidth of the antenna was found to be 1.1GHz. The bandwidth is high for this antenna and has an ideal value. The active reflection coefficients of the MIMO antenna were maximum -14.5dB and the envelope correlation coefficient was less than 0.017. The maximum efficiency of the antenna at 24GHz is 94.50%, 91.81% at 27GHz and, 81.81% at 28GHz. The radiation values of the developed 4-port MIMO antenna are normalized values. The design and analysis of the antenna was completed using ANSYS HFSS® computer simulator. The frequency values investigated are candidate frequency values licensed for 5G technology. The gain values from the designed antenna are 12.70B at 24GHz, 13.05dB at 27GHz and, 10.48dB at 28GHz. The gain values found have important values for the 4-port MIMO antenna. [ABSTRACT FROM AUTHOR]