Design of multi-band millimeter wave antenna for 5G smartphones

The design of a millimeter wave (mmW) antenna for the 5G mobile applications is presented in this paper. The designed antenna has dimensions of 10×10×0.245 mm³. This includes the copper ground plane. The resonance of the proposed mmW antenna lies within the range of 33 GHz and 43 GHz. These frequency bands are covering the 5G proposed band in terms of the signal speed, data transmission, and high spectral efficiencies. Computer simulation technology (CST) software is used to simulate the proposed 5G antenna including the characteristics of S-parameters, gain, and radiation pattern. Simulation results show that the return loss at resonant frequencies goes -22 dB, which satisfies the requirements of 5G mobile technology.

GIF IMAGE HARDWARE COMPRESSORS

Increasing requirements for data transfer and storage is one of the crucial questions now. There are several ways of high-speed data transmission, but they meet limited requirements applied to their narrowly focused specific target. The data compression approach gives the solution to the problems of high-speed transfer and low-volume data storage. This paper is devoted to the compression of GIF images, using a modified LZW algorithm with a tree-based dictionary. It has led to a decrease in lookup time and an increase in the speed of data compression, and in turn, allows developing the method of constructing a hardware compression accelerator during the future research.

Industrial Internet of Things - Control of Industry Simulation Through Different Protocols

In past few years there is a great demand for internet of things (IoT), It has become an important part of smart technologies. There have been many researches going-on in internet of things in both academics and industries. IoT using in industries is also known as Industrial Internet of Things (IIoT). Where smart sensors are used along with IoT are used. This research work is done to identify the best protocol for high-speed data transmission with no loss of data to prevent command lag between mobile controller and industry. In this research a soda filling Industry simulation with 3 different plants was controlled through a mobile application through different protocols with 4 different features of data transfer. The time of data sending and receiving from application and ESP32 controller are stored in a log. The speed of data transfer of all different protocols is compared. From the final result, ThingSpeak is an optimum protocol for this application which is 36% faster than HTTP in single data transfer and 39% faster than MQTT in continuous data transfer.

Design and Implementation of Travelling Wave Electrode Silicon Mach Zehnder Modulator based Plus-Shaped PN Junction Phase Shifter for Data Centre Application

Silicon Mach-Zehnder modulator (SMZM)is fit to high-contrast optical modulation in wide ranges ofspectral along 50 Gbaud symbol rates. Some times itsefficiency is lower in wavelength about 1.31 μm than 1.55μm, it can decrease the Phase Shifter (PS) efficiency andoccupies large amount of data rates. In this manuscript,the plus-shaped PN junction Phase Shifter (PS) isproposed. The major aim of the proposed work is to createan optimum CD type plus-shaped PS including lesser VπL.Silicon MZM including proposed PS can satisfy thehigher-speed data transmission requirement on theapplications of inter with intra data centre. The objectiveof this method is to increase the modulation efficiency(ME) by decreasing the optical loss for higher-speed datarate (DR). To get greater efficiency of modulation, the Pdoped region width and the thickness of doped regions arediffer under slabs. The simulation analysis of circuit-levelis executed in the proposed PS acquired at travelling waveelectrode (TWE) silicon Mach Zehnder modulator. In 80Gbps, the 12.39 dB maximal extinction ratio along8.67×10-8 bit error rate (BER) was acquired in VπLπ of1.05 V.cm for 3.5 mm PS length. The measured intrinsicbandwidth of 3 dB denotes ~38 GHz, whereas thetransmission energy per bit denotes 1.71pJ/bit. Moreexamines are carried out to recognize the maximalcommunication distance using proposed PS under SMZMfor the requirements of data centre.

Một Giải Pháp Bảo Mật Dữ Liệu PCI-Express Sử Dụng Công Nghệ FPGA

Abstract—With high-speed data transmission such as PCI-Express, the cryptographic intervention in the transmission line, which does not affect the data transmission process but still ensures the data transmission rate of the protocol, will be the foundation to develop cryptographic applications using PCI-Express protocol. In this article, a technical solution to capture the data packet of the PCI-Express protocol using FPGA technology will be presented. Using the standard library of PCI-Express on the computer to connect to the FPGA board, on which organizing the data according to the standard of PCI-Express protocol, at the same time to cryptographic intervening on the line. Thus, plaintext will be transmitted from the computer to the FPGA board via PCI-Express interface, then it will be organized, cryptographic intervened and transmitted back to the computer.Tóm tắt—Với đường truyền dữ liệu tốc độ cao như PCI-Express, việc can thiệp mật mã vào trong đường truyền để không ảnh hưởng đến quá trình truyền dữ liệu mà vẫn đảm bảo được tốc độ truyền dữ liệu của giao thức mang lại sẽ là cơ sở để phát triển các ứng dụng mật mã sử dụng giao thức PCI-Express. Trong bài báo này sẽ trình bày một giải pháp kỹ thuật bắt gói tin dữ liệu của giao thức PCI-Express sử dụng công nghệ FPGA. Sử dụng bộ thư viện chuẩn PCI-Express trên máy tính để thực hiện kết nối tới bo mạch FPGA, qua đó trên FPGA thực hiện tổ chức dữ liệu theo chuẩn giao thức PCI-Express, đồng thời tổ chức can thiệp mật mã trên đường truyền. Như vậy, dữ liệu rõ sẽ được truyền từ máy tính xuống bo mạch FPGA thông qua giao tiếp PCI-Express, sau đó được tổ chức, can thiệp mật mã và truyền lại cho máy tính.

OPTIMIZATION OF THE STRUCTURE OF A MULTI-FREQUENCY MODEM

The paper considers the solution to the problem of increasing the spectral efficiency of a digital transmission system with multifrequency modulation and optimal finite signals that do not cause intersymbol interference in various channels of a multifrequency modem. Applying the method of multi-frequency data transmission based on two-dimensional signal processing, high-speed data transmission is organized over frequency-limited communication channels based on wired technologies of the xDSL standard. The well-known and new modem, which is superior in efficiency to similar modems, are presented. In this paper, the modernization of a multifrequency modem with optimal finite signals based on quadrature amplitude modulation (QAM) is considered. The peculiarity of this structure is as follows: the use of new, synthesized optimal finite OFS-2 signals with increased noise immunity; in the application of the new structure of the multi-frequency modem MFM3; in the use of a frequency-limited GCS in the UEP DCS at the reception in order to compensate for the amplitude and phase distortions introduced by it. Comparative results of calculations of the spectral-energy efficiency of the considered multi-frequency modulated modem MFM3 with OFS-2 and narrow-band subcarriers are illustrated by the graphs in Fig. and presented in Table . Implementation of the new modem in digital telecommunications systems will significantly increase their spectral efficiency. The proposed approach can be used to organize high-speed data transmission over frequency-limited communication channels based on wired technologies of the xDSL standard. For the first time, an adaptive multi-channel digital transmission system with a new multi-frequency modem and new optimal second-type finite signals with increased spectral and energy efficiency has been developed, taking into account optimal estimates of the parameters of the direct communication channel transmitted via the feedback channel and used both in transmission (in the modulator) and reception (in the demodulator).