16050

14333

كارشناسي ارشد

مخابرات سيستم

اصفهان : دانشگاه صنعتي اصفهان

1399

پانزده، 89ص. : مصور، جدول، نمودار

محمدجواد اميدي

علي‌محمد دوست حسيني، فروغ‌السادات طباطبا

1399/09/09

كتابنامه

مهندسي برق

مهندسي برق و كامپيوتر

1399/09/19

2652699

3D Position Planning of Unmanned Aerial Vehicle Base Station UAV BS for Coverage Maximization in Wireless Communication Systems Majid Fouladgar m fouladgar@ec iut ac ir September 5 2020 Department of Electrical and Computer Engineering Isfahan University of Technology Isfahan 84156 83111 IranDegree Master of Science Language FarsiSupervisor Mohammad Javad Omidi Assoc Prof omidi@iut ac ir AbstractWith increasing advancement of wireless communication systems and development of new applications withhigh data rate requirements in fifth generation wireless communication systems and beyond the data trafficon cellular networks will increase significantly On the other hand the extension of the concept of Internet ofthings IoT in wireless communication networks is possible only by easy and global access to wireless com munications Therefore the design of next generation wireless communication networks requires the definitionof innovative solutions to improve existing cellular networks as well as the possibility of communications inall situations even in the event of unforeseen events The use of unmanned aerial vehicle UAV is consideredas a proposed solution to improve wireless communication networks Specifications of UAVs including fastdeployment and 3D location adjustment have defined a variety of applications for them in next generationwireless communications systems One of the roles for UAVs is to use them as an aerial base station UAV BS Compared to the terrestrial type the aerial base station has higher flexibility and ease of use in different con ditions However the adjustable height and characteristics of the aerial wireless communication channel havemade the three dimensional location designation of the UAV BS as an important challenge in the use of thistype of base station In this thesis we study the three dimensional location of UAV BS in the system withoutterrestrial base station by maximizing the coverage of users and due to the limitation of its transmission power For this purpose we first separate the height dimension from the other two dimensions of the UAV BS locationand obtain its optimal value by a method based on maximizing the coverage radius of this type of base stationin different urban environments Then determining the UAV BS horizontal location is expressed in the form ofan optimization problem with the aim of maximizing user coverage This problem is non convex and NP hardin terms of complexity Therefore a suboptimal numerical method is proposed to solve it In this method bychanging the discrete binary variable to a continuous variable the problem is solved numerically by satisfyingthe constraints of the transmission power limitation and the UAV BS location range After solving this problem by determining the appropriate range for the continuous variable the users coverage and the UAV BS horizon tal location are determined The simulation results show the performance of this system and the effectivenessof the UAV BS maximum transmission power and the required data rate of users KeywordsUnmanned Aerial Vehicle Unmanned Aerial Vehicle Base Station Aerial Wireless Communication Channel User Coverage

محمدجواد اميدي

علي‌محمد دوست حسيني، فروغ‌السادات طباطبا