پديد آورنده :
علي اصغري، محسن
عنوان :
بهينه‌سازي حداقل نرخ داده حسگرها با طراحي توأم شكل‌دهي پرتو انرژي و مسيريابي داده‌ها
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان : دانشگاه صنعتي اصفهان
صفحه شمار :
يازده، 74ص.: مصور رنگي)، جدول، نمودار
استاد راهنما :
حسين سعيدي، فروغ السادات طباطبا
توصيفگر ها :
شبكه‌هاي حسگر بي‌سيم , انتقال توان بي‌سيم , شكل دهي پرتو انرژي , مسيريابي , برداشت انرژي
استاد داور :
نغمه سادات مؤيديان، محمد صادق فاضل
تاريخ ورود اطلاعات :
1399/07/28
دانشكده :
مهندسي برق و كامپيوتر
تاريخ ويرايش اطلاعات :
1399/07/28
چكيده انگليسي :
Optimization of Minimum Data Rate of Sensors by Jointly Design of Energy Beamforming and Data Routing Mohsen Aliasghari m aliasghari@ec iut ac ir Isfahan University of Technology Department of Electrical and Computer Engineering Degree M Sc Language Farsi Supervisors Dr Hossein Saidi Dr Foroogh S TabatabaAbstract With the rapid development of wireless communications wireless devices are becoming more popular in everyday life Currently wireless devices usually rely on internal batteries to power However due to the limited battery capacity thelifetime of these devices are limited In addition for low power devices such as sensors used in the internet of things sincethe number of sensors is very high and sensors may be located in some dangerous or hard access places it may be hardor impossible to replace or charge the batteries Therefore achieving wireless charging of wireless devices has become amajor issue On the other hand given that the battery capacity of wireless devices are limited the use of wireless powertransfer and energy harvesting from radio frequency signals by these devices is a solution to solve the problem of the batterycapacity limitation In wireless power transfer using radio frequency signals the source transfers power wirelessly to thewireless devices and they use this power to extract the energy they need to exchange information To increase the powerextraction beamforming methods are used in the power transmitter Moreover it is very important to consider the quality ofservice and fairness among users It takes a lot of energy to transmit information over long distances but wireless sensorshave limited energy For this reason the sensors can send their information to the neighboring sensors and by cooperation deliver the sensor information to the destination In this method it is very important to find the path that has the least energyconsumption Optimal routing algorithms is one of the useful solutions that can be used to reduce energy consumption In this study we randomly place a number of sensors in an area and wirelessly send energy to the sensors via a chargerstation After extracting the energy the sensors will send their information to the sink The goal of this optimization is tomaximize the minimum rate of the sensors so that we have an everlasting wireless sensor network In the proposed systemmodel we send the energy to sensors using energy beamforming in downlink and sensors will transmit their informationusing the harvested energy The harvested energy is limmited to the considered battery capacity In uplink considering theRayleigh channel and pathloss between the sensor nodes we calculate the channel capacity using Shannon equation and useit in the optimization problem We simulate the system and discuss the effects of the number of charger antennas the rangeof sensors battery capacity and channel capacity on the minimum data rate of sensors The results show that increasing thebattery capacity or channel capacity as well as increasing the sensors range increases the minimum rate of the sensors
استاد راهنما :
حسين سعيدي، فروغ السادات طباطبا
استاد داور :
نغمه سادات مؤيديان، محمد صادق فاضل
