Full-Dimension Massive MIMO Technology for Fifth Generation Cellular Networks

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

Full dimension (FD) multiple-input multiple-output (MIMO) technology has recentlyattracted substantial research attention in the 3rd Generation PartnershipProject (3GPP) as a promising technique for the next-generation of wireless communicationnetworks. FD-MIMO scenarios utilize a planar two-dimensional (2D) activeantenna system (AAS) that not only allows a large number of antenna elements tobe placed within feasible base station (BS) form factors, but also provides the abilityof elevation beamforming.This dissertation presents the elevation beamforming analysis for cellular networksutilizing FD massive MIMO antenna arrays. In particular, two architecturesare proposed for the AAS - the uniform linear array (ULA) and the uniform circulararray (UCA) of antenna ports, where each port is mapped to a group of verticallyarranged antenna elements with a corresponding downtilt weight vector. To supportFD-MIMO techniques, this dissertation presents two di erent 3D ray-tracing channelmodeling approaches, the ITU based `antenna port approach' and the 3GPP technicalreport (TR) 36.873 based `antenna element approach'. The spatial correlation functions(SCF)s for both FD-MIMO arrays are characterized based on the antenna portapproach. The resulting expressions depend on the underlying angular distributionsand antenna patterns through the Fourier series coe cients of the power spectra andare therefore valid for any 3D propagation environment. Simulation results investigatethe performance patterns of the two arrays as a function of several channel andarray parameters.The SCF for the ULA of antenna ports is then characterized in terms of thedowntilt weight vectors, based on the more recent antenna element approach. Thederived SCFs are used to form the Rayleigh correlated 3D channel model. All theseaspects are put together to provide a mathematical framework for the design of elevationbeamforming schemes in single-cell and multi-cell scenarios. Finally, thisdissertation proposes to use the double scattering channel to model limited scatteringin realistic propagation environments and derives deterministic equivalents of thesignal-to-interference-plus-noise ratio (SINR) and ergodic rate with regularized zeroforcing(RZF) precoding. The performance of a massive MIMO system is shown to belimited by the number of scatterers. To this end, this dissertation points out futureresearch directions.

روابط وملفات

التعريف والنوع

رقم الوثيقة

ff4a1b71-eb83-4a8b-9cf5-5ff60508d66c

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل دكتوراة

نوع الملف

pdf text

أسماء الملفات

1698841_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":" Qurrat-Ul-Ain","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"Mohamed-Slim","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

English

المصدر والدورية

اسم المصدر

Full-Dimension Massive MIMO Technology for Fifth Generation Cellular Networks

المحتوى والصفحات

عدد الصفحات

0

كلمات الباحثين

beamforming , Massive MIMO , spatial correlation

إشراف وإعداد

الإشراف

Mohamed-Slim

الإعداد

Qurrat-Ul-Ain

الاقتباسات الببليوغرافية