15800

14106

كارشناسي ارشد

برق

اصفهان : دانشگاه صنعتي اصفهان

1399

سيزده، 75ص.: مصور، جدول، نمودار

فروغ السادات طباطبا

مهدي نادري سوركي

محمد صادق فاضل، احسان يزديان

1399/07/12

كتابنامه

برق

مهندسي برق و كامپيوتر

1399/07/12

2637820

Resource Allocation for mmWave NOMA Networks Considering Human Blockages Foad Barghikar f barghikar@ec iut ac ir July 28 2020 Department of Electrical and Computer Engineering Isfahan University of Technology Isfahan 84156 83111 IranDegree Master of Science Language FarsiSupervisor Foroogh S Tabataba Assist Prof fstabataba@cc iut ac ir AbstractIn this thesis a novel framework for optimizing the resource allocation in a millimeter wave non orthogonalmultiple access mmWave NOMA communication for crowded venues is proposed Unfortunately mmWavecommunications suffer from severe blockage caused by obstacles such as the human body especially in a denseregion In this regard a detailed method for modeling blockage events in the in venue scenarios is introduced Due to the line of sight link blockage in the highly populated regions multiple mmWave access points areconsidered in different locations The resource allocation problem in this network is expressed in the form ofan optimization problem to maximize the network sum rate however this problem is proven to be NP hard In this regard a three stage low complex solution is proposed to solve the problem In the first stage a userscheduling algorithm i e modified worst connection swapping MWCS is proposed Then in the secondstage the antenna allocation problem is solved using a meta heuristic algorithm called simulated annealing Inthe third stage to maximize the network sum rate and guarantee the quality of service constraints a non convexpower allocation optimization problem is solved by adopting the difference of convex programming approach The simulation results show that under the blockage effect the proposed mmWave NOMA scheme performson average 23 better than the conventional mmWave orthogonal multiple access OMA scheme In addition the proposed solution s performance is close to the optimal value while reducing complexity by about 96 Moreover the number of required mmWave access points needs to be chosen based on a tradeoff between theblockage probability and co channel interference KeywordsMillimeter wave communications non orthogonal multiple access resource allocation multiple access point human blockage massive multiple input multiple output

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مهدي نادري سوركي

محمد صادق فاضل، احسان يزديان