پديد آورنده :
روحاني، پريسا
عنوان :
بررسي بازده انرژي در سيستم هاي مخابراتي رله در حضور خطاي تخمين كانال
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده برق و كامپيوتر
صفحه شمار :
سيزده، 79ص.: مصور، جدول، نمودار
استاد راهنما :
فروغ السادات طباطبا
توصيفگر ها :
شبكه هاي همكارانه , تخصيص بهينه توان
تاريخ نمايه سازي :
1394/05/19
استاد داور :
علي محمد دوست حسيني
تاريخ ورود اطلاعات :
1396/10/04
رشته تحصيلي :
برق و كامپيوتر
دانشكده :
مهندسي برق و كامپيوتر
چكيده فارسي :
به فارسي و انگليسي
چكيده انگليسي :
Energy Efficiency Evaluation Of Relay Communication Systems In Presence Of Channel Estimation Error Parisa Rouhani parisa rouhani@ec iut ac ir Date of Submission April 25 2015 Isfahan University of Technology Department of Electrical and Computer Engineering Degree M Sc Language FarsiSupervisor Foroogh S Tabataba fstabataba@cc iut ac ir AbstractDue to rapidly increasing energy consumption of wireless communication systems more and moreenergy is consumed in wireless communication systems Therefore nowadays energy consump tion in wireless communication systems is an important issue and researchers are looking to findsolutions to increase energy efficiency EE in green wireless communication systems Coopera tive communication is one way that can increase EE In wireless networks relaying is supposed tobe a low energy consumption technique since the long distance is divided to several short distancetransmissions Therefore relaying protocols can increase EE Most detection techniques and opti mization methods in cooperative networks assume that perfect channel state information is available While in practical situations the estimates of the channels may only be known and for acquiring suchknowledge a fraction of power and bandwidth have to be spent for channel estimation using pilotsymbols Moreover considering circuit power in power consumption model is one of the importantissues in practical systems In long distances transmission power dominates circuit power so we canneglect circuit power consumption Therefore for example in wireless sensor networks the averagedistance between nodes is less than ten meters so in these networks we have to consider circuit powerconsumption Without considering circuit power EE is monotonically decreases with increasing SE However with considering circuit power with increasing SE EE first increases and then decreases Most previous results in this area assume that perfect CSI is available Instead in this thesis wehave considered imperfect CSI condition for both the source relay and relay destination channels Power allocation between pilot and data symbols is investigated to maximize EE for one way and
استاد راهنما :
فروغ السادات طباطبا
استاد داور :
علي محمد دوست حسيني
