学术报告:Downlink and Uplink Non-Orthogonal Multiple Access in a Dense Wireless Network

主讲嘉宾:Rose Qingyang Hu  教授

邀请人:江明教授

报告摘要:To address the ever increasing high data rate and connectivity requirements in the next generation 5G wireless network, novel radio access technologies (RATs) are actively explored to enhance the system spectral efficiency and connectivity. As a promising RAT for 5G cellular networks, non-orthogonal multiple access (NOMA) has attracted extensive research attentions. Compared with orthogonal multiple access (OMA) that has been widely applied in existing wireless communication systems, NOMA possesses the potential to further improve system spectral efficiency and connectivity capability. This talk focuses on the analytical frameworks for NOMA downlink and uplink multi-cell wireless systems that can be used to evaluate the system outage probability and average achievable rate. In the downlink NOMA system, two different NOMA group pairing schemes are considered, based on which theoretical results on outage and achievable data rates are derived. In the uplink NOMA, revised back-off power control scheme is applied and outage probability and per UE average achievable rate are derived. As wireless networks turn into more and more densely deployed, inter-cell interference has become a dominant capacity limiting factor but has not been addressed in most of the existing NOMA studies. In this paper a stochastic geometry approach is used to model a dense wireless system that supports NOMA on both uplink and downlink, based on which analytical results are derived either in pseudo-closed forms or succinct closed forms and are further validated by simulations. Numerical results demonstrate that NOMA can bring considerable system-wide performance gain compared to OMA on both uplink and downlink when properly designed.

嘉宾简介:Rose Qingyang Hu是美国犹他州立大学工程学院科研副院长、电气与计算机工程系教授。她于中国科学技术大学获得学士学位、美国纽约大学获得硕士学位、美国堪萨斯大学获得博士学位。除10余年学术研究经验外,胡教授还在北电网络、黑莓和英特尔等企业担任过技术经理、高级研究科学家和高级无线系统架构师等职,拥有超过10年的企业研发经验,积极参与了工业界的3G/4G技术研发、标准化、系统级仿真和性能评估等工作。她目前的研究兴趣包括下一代无线通信、无线网络设计与优化、物联网、云/雾计算、多媒体服务与体验质量、无线系统建模与性能分析等。她已在顶级IEEE期刊与会议发表了超过200篇学术论文,并拥有30余项专利。胡教授是IEEE通信学会的杰出讲师(2015-2018)和IEEE Globecom 2012、IEEE ICC 2015、IEEE VTC Spring 2016及IEEE ICC 2016等会议的最佳论文奖获得者,也是IEEE ICC 2018会议的技术委员会联席主席。目前,她是IEEE Transactions on Wireless Communications、IEEE Transactions on Vehicular Technology、IEEE Communications Magazine、IEEE Wireless Communications Magazine等期刊的编委,也是IEEE的高级会员及Phi Kappa Phi学会的会员。

活动时间: 
星期三, 2018/10/17 - 10:00am to 11:30am
活动地点: 
电子与信息工程学院101讲学厅

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