This paper presents the hardware verification process of a Singular Value Decomposition (SVD) based OFDM channel estimator. The design has been implemented on a Virtex-II Pro FPGA board and synthesized for an ASIC in 130 nm technology. The design has been verified using the Agilent HP 16822A system consisting of a Logic Analyzer and Pattern Generator. The design has been tested for three different set of random test vectors and worked correctly up to 110 MHz. The verification result shows that successful hardware implementation is possible for this sort of novel, advanced channel estimation strategies, even though no prior implementation and verification of such estimation strategies have been known. Along with the verification process, the paper gives a brief introduction of a SVD based channel estimator and also discusses the hardware synthesis report.
This paper discusses a prototype that will harvest available RF waves in urban areas especially from 700 MHz to 6 GHz. The harvested energy, which of very low magnitude, is later amplified to a suitable value for the use in consumer appliances, especially for mobile devices. It will increase the mobility of the device and allow to use the unused electromagnetic wave for daily purposes, thus reducing the pressure on national power grid in a broad sense. In addition describes efficient methods for extracting DC power from electromagnetic radiation.
This paper discusses a comparison between 3-element and 5-element Yagi-Udaantenna to find out the best antenna for power harvesting from available RF waves in urbanareas. The antenna will extract available RF waves from environment. The harvested energyfrom the chosen antenna, which of very low magnitude is later amplified to a suitable valuefor the use in consumer appliances, especially for mobile devices. It will increase the mobilityof the device and allow using the unused electromagnetic wave for daily purposes, thusreducing the pressure on national power grid in a broad sense. Additionally, this paperdiscusses the antenna structure and methods for extracting DC power from electromagneticradiation.
Automatic Number Plate Localization and Recognition (ANPR) is a method that uses template matching on images to read the number plate of vehicles. This paper presents a robust method of license plate localization, segmentation and recognition of the character present in the located plate using an algorithm, which is based on pixel. The whole process has been designed in such a way that it can detect the conventional English number plate and can also detect Bengali alphanumeric number plate with adjoined Bengali letter by an easy and efficient algorithm which is robust to work and less time consuming. The ANPR systems are largely recommended for security system like traffic monitoring, electronic toll collection, and surveillance device and safety supervision. This whole system has been developed using MATLAB R2009a.
Wireless Sensor Network (WSN) has touched our daily life and is getting developed day by day. Recently new WSN are designed to monitor environment or bio-organic purposes. Application of WSN technology cannot be limited within home appliances; it can also be used in Industrial application. Now a day’s Industries use expensive wired LAN network in order to monitor. In this paper a cost effective wireless Industrial appliances monitoring system has been designed and implemented. The implemented system can be used to collection data or monitor industrial machineries and equipment through web server and take necessary actions based on the received data of temperature or humidity. The implemented system is cost effective and simpler than existing systems and utilizes Tree networking approach and uses NRF protocol in combination of router to upload data to the web server.
In this paper the relative permittivity response of some nanometals such as Gold (Au), Silver(Ag), Copper(Cu), Aluminum (Al) and Nickel(Ni) are investigated at optical frequencies. The permittivity response is necessary because the optical response of the metal nanoantenna highly depends on the permittivity of the metals. The surface plasma response largely depends on the permittivity response at optical frequency. This relative permittivity response also playsan important role in the design process of a nanoantenna. This paper represents the permittivity response at the frequency range of 20–300 THz (the wavelength range of 3–15 μm).
To achieve the future demand of high data rates and high gain with better efficiency, two nano Microstrip patch antennas were designed with nickel and silver substrates. The operating or resonance frequency selected for the two antennas was 0.25 THz or 250 GHz. The main reason behind designing the antenna at 250 GHz is that the frequency range is completely free. The rectangular shape of the patch was selected because of the simplicity of dimension calculation. The transmission line model was taken for the analytical purpose. It is the simplest model of all other models. The values of patch width and length were calculated. The height of the antenna was taken too small for better performance. To operate the antennas at desired 250 GHz some dimensions were varied. Directivity of 16.37 dBi was found for the Nickel substrate patch antenna and 17.37 dBi directivity was found for the Silver substrate patch antenna.
This project describes the design, simulation and manufacturing procedure of an Unmanned Ground Vehicle (UGV) surveillance robot which can be operated with a remote manually within a range of 600 meter in open space. The wireless controller is based on Radio Frequency. It has been designed following the design of a tank robot but it is not exactly like the traditional tank robot. It can rotate 360 degree and can tilt 180 degree and after that it can still work normally. This robot can monitor condition of the place like temperature and presence of natural gas. A camera is attached with this robot with which it can observe the condition of the site through internet. It also contain a coil gun with which it can attack enemy within a range of 10 fit and has also obstacle detector to protect itself.
In this paper we have simulated the 16 QAM communication systems considering the channel as AWGN and sketch bit error rate of the system versus Eb/No and then applied (15,11,1) BCH code. The above results are being compared with the theoretical performance, we have used MATLAB for all the cases. Due to mobile movement in the channel, the uncoded system affecting Doppler Spread was considered and the bit error rate of the system was drawn for maximum mobile speed of 42.3 Km/Hour. After applying coding we have discussed the above results. At last we have integrated an interleaver for the system to improve the coded performance results and compared the overall performance.
Energy is the basic demand for the evolution of the advanced globe. The energy extracted from force is called potential energy which has visually no fuel expense. Thus, utilization of this energy can reduce the overall cost and can increase the output productivity. This project utilizes the force created from vehicle hump as an alternative and recyclable energy source. Electricity is generated by substituting the conventional speed breakers with a special one consisting of simple mechanisms. For this purpose, two generation methods are used: one is the mechanical unit and another is the piezoelectric unit. As the vehicles pass over the speed breaker, it sets about acting as they spin the rollers which are linked to a DC generator which rotates to generate electricity. A rack and pinion mechanism is provided which transfers the vertical movement to a DC generator for electricity generation. In addition, embedded piezo materials convert pressure directly into electricity. This method is an efficient resource to produce electricity as the numbers of electric vehicles on the road are increasing day by day. Likewise, the cost of manufacture of the model is low. A bypass system consisting of these units can effectively recycle the energy exerted by the vehicles and in case of electric vehicles, feeding them back with wireless power transfer method. Additionally, it can be placed at the entrance of parking lots and any other situation where traffic density usually occurs.
Agriculture is the essential source of livelihood for people in Bangladesh. It plays major part in economy of the nation. In Bangladesh about 75% of population depends upon agriculture and one third of the country’s income comes from agriculture. Issues concerning agriculture have been continuously ruining the improvement of the nation. But at present due to movement of individuals from countryside to urban there is obstacle in agriculture. On the other hand, the conventional methods need manual intervention. So, farmers need to go to field to monitor the field which is time consuming. If famers can save the monitoring time, then they would be able to invest the time in other works and can earn more. The only solution is smart agriculture to overcome the issues by modernizing the traditional method of agriculture. Subsequently the paper aims at making agriculture smart utilizing computerization and IoT based technologies. The highlighting structures of this project includes smart IoT based solar powered system to perform tasks, soil moisture sensing, water level sensing, temperature sensing, humidity sensing, surveillance camera, birds and enemies scaring etc. Besides, it incorporates smart irrigation with smart control and cleverly decision making based on precise real-time field information. Monitoring of all these operations will be through mobile application or computer connected to internet and the system will be performed by interfacing sensors, camera and Wi-Fi module with Arduino and Raspberry Pi.
Patient negligence and harassment have become a common phenomenon now-a-days. To reduce this incident “Smart Surveillance and Automation system for patient” have been built. The system’s aim is to provide the patient security while maintain the patient’s privacy as well as provide an automated bed at a cheap price. This surveillance system starts recording once it detects a face and it also has a facial expression recognition system installed that recognizes the caregiver’s expression. This feature can detect up to seven expressions (anger, disgust, happy, sadness, being surprised, fear and neutral). This feature allows this system to also be a performance evaluator if desired by the person hiring the caregiver. This surveillance system is built with the technology of Computer vision. Python language and its library such as numpy, keras has been used to program the detection of face and facial expression. This system also starts recording the audio if the system cannot detect a face but detects a loud noise. To provide further security it also has a panic button that can alert the patient’s relative that he is in danger. The bed that is also a part of the system can move its upper side to provide comfort for the patient. This automated bed should ease some pressure on the caregiver as the patients can do the movement with the bed by themselves. As this is a prototype model further development is needed to add new feature in order to improve this systems efficiency and fortify the security provided by the system.
Nafiz Ahmed Chisty
Associate Professor &
Head In-Charge (UG), Department of EEE,
Faculty of Engineering
American International University Bangladesh (AIUB)
408/1, Kuril, Kuratoli Road