The Research and Implementation of USB Communication Interface Circuit Based on FPGA

2012 ◽  
Vol 220-223 ◽  
pp. 2032-2035 ◽  
Author(s):  
Cai Hong Wang ◽  
Guang Feng Jin

This paper puts forward the design of communication system based on FPGA. USB controller CY7C68013 is widely used for its faster data transmission rate and diverse interface way which provide a simple and seamless connecting interface for the ATA, FPGA and DSP . This paper introduces the basic working principles of the controllers, and uses its affiliate FIFO method in order to produce corresponding control signal in FPGA with VHDL. It realizes fast data transmission between PC and FPGA through USB. Test results shows that the scheme transmission speed fast, data accurate, and can be extended to other need through the USB fast data transmission system.

Author(s):  
Sapna Gupta ◽  
Gursharan Kaur ◽  
Ridima Mittal ◽  
Dev Garg

Over the years, the overdependence on Wireless Fidelity (Wi-Fi) for data transmission necessitated the need for an alternate and more reliable means of communication, hence, Light Fidelity (Li-Fi). It involves the use of Light Emitting Diode to transmit data by blinking (i.e. switching them on and off) at a speed not noticeable to the eye. This paper proposed the development of the Li-Fi system using off the shelf electronic components. This would make the system an indispensable means of communication in the nearest future. This data transmission system is different from those in existence because expensive components were not in the design, invariably reducing the overall cost of the implementation. Keywords: Light Fidelity (Li-Fi), Wireless Fidelity (Wi-Fi) Optical communication, Telecommunication


Aviation ◽  
2008 ◽  
Vol 12 (1) ◽  
pp. 18-21
Author(s):  
Wu Zijuan

Probability failure in operation as well as error probability at fixed frequency band, number of users, and data transmission speed have been analyzed. Santrauka Išnagrinėta aptarnavimo atmetimo tikimybė bei klaidų tikimybė fiksuotų dažnių juostose, abonentų skaičiaus ir informacijos perdavimo greičio nustatyme.


2013 ◽  
Vol 310 ◽  
pp. 596-600 ◽  
Author(s):  
Xiao Guang Li

In order to overcome the disadvantages of small broadband, low transmission rate, network delay and high error rate in the locomotive real-time data transmission. A new wireless real-time data transmission system is designed by using nRF24L01 based on USB2.0.Which includes CY7C68013A chip of CYPRESS company and nRF24L01 wireless module, gives communication principle interface electrics circuit between CY7C68013A chip and nRF24L01 wireless module, focus on the hardware and software designs according to practical application and analyze real-time of the data during transporting. An algorithm for reducing real-time data error rate is developed to achieve efficient real-time data transmission. Experiments proved that the system is easy to control and works stably to perform reliable wireless real-time data transmission.


2011 ◽  
Vol 219-220 ◽  
pp. 436-440 ◽  
Author(s):  
Qi Sheng Zhang ◽  
Ming Deng ◽  
Qi Wang ◽  
Yong Qiang Feng ◽  
Rui Yang

As an expendable profiler in marine environment, XCP (Expendable Current Profiler) is mainly to measure current speed, direction and temperature. The paper is to research dynamic sinking data transmission technique for XCP. Data transmission medium is a varnished wire with diameter of 0.1mm, length of 1,800m and two parallel wires. Transmission characteristics of varnished wires can be tested by experiment and computation. The paper is to research and design a kind of base band transmission system and analyze its characteristics and performance. By utilizing digital base band signaling transmission technique, indoor and marine testing results show that designed data transmission system can reach 1,800m on varnished wires with diameter of 0.1mm if XCP probe sinks dynamically by speed of 4m/s and transmission speed is 2,400bps.


2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Tao Ge ◽  
Xiaolong Wu

With the rapid development of the global online advertising industry, computational advertising was born. As an advertising model that combines technology and calculation with online advertising decision-making, it is based on a given advertising request, takes into account the advertising context and user characteristics, selects the best match from the potential advertising library through calculation, and then runs deliver ads to target audiences. This article aims to start from the technical level of big data, accurately place online advertisements, and evaluate the effects of advertisements. The sample collection method and statistical analysis method are used to collect samples and set up a data transmission system based on BD-MQ. The experimental results of the research show that there is almost no profit in the study of advertising time between 4 and 8 o’clock, and the users who watched at 16 o’clock reached 34.7%, 18–20 o’clock reached 68.7%, 20–22 o’clock reached 80.1% of the peak, and 22–24 o’clock returned to 40.2%. Compared with the data transmission system based on ActiveMQ, the data transmission system based on BD_MQ designed in the thesis has a speed advantage of about 5%–10%, and the transmission rate changes for a single data with different sizes are more stable. The larger the total amount of data transmitted, the higher the average rate; the larger the single data packet, the higher the average rate. When the size of a single data packet is around 100 kB, the transmission rate reaches the maximum. The research on the precise placement and effect evaluation of online advertising has been completed well.


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