Large-Scale MIMO in C-RAN

为了满足未来十年对宽带无线服务快速增长的需求，国际标准机构为第五代（5G）无线系统制定了一系列令人印象深刻的目标。在缩写为IMT-2020下，这些目标要求成倍增加数据速率、单位面积用户容量和服务质量（QoS），从而实现无缝连接，将人与物聚集在智能网络城市中。为了满足这些要求，需要在通信模型堆栈的所有级别上实现重大的技术进步，特别是在物理层。在此背景下，我们提出了未来三年内进行的尖端研究计划，旨在为5G挑战的关键子集提供可行的工程解决方案。具体来说，我们将寻求开发和研究改进的传输和信号处理方案，用于在云无线电接入网络（C-RAN）下运行的大规模多输入多输出（MIMO）系统。提出的研究沿着两个主要途径进行阐述：（1）用于大规模MIMO的混合预编码/解码设计;（2）C-RAN下的MIMO操作。将在复杂性、带宽和功率效率方面寻求改进，同时将在代表5G网络的操作条件下表征性能。这项研究计划得到了我们的工业赞助商InterDigital Canada的大力支持，并与公司工程师一起精心制作。根据我们目前的协议，InterDigital将拥有我们团队开发的新技术的主要使用权，并有机会招募在该项目下接受培训的顶级HQP。反过来，来自公司的关键反馈将帮助我们保持竞争优势，并沿着更具挑战性的方向推进我们的研究。拟议的研究旨在帮助InterDigital在C-RAN内开发大规模MIMO领域的知识产权，预计这将是5G的关键技术。因此，我们的合作将为加拿大创造新的机会，帮助我国保持其作为信息部门全球领导者的地位。

To meet the rapidly increasing demand for broadband wireless services over the next decade, internationalstandard bodies have set forth an impressive list of goals for the fifth generation (5G) of wireless systems.Under the acronym IMT-2020, these call for multi-fold increase in data rate, user capacity per unit area, andQuality of Service (QoS), allowing seamless connections that will bring together people and objects in a smartnetworked city. To fulfill these requirements, significant technological advances are needed at all levels of thecommunication model stack, but especially at the physical layer. Within this context, we propose acutting-edge program of research, to take place over the next three years and aimed at providing viableengineering solutions to a critical subset of 5G challenges. Specifically, we will seek to develop and investigateimproved transmission and signal processing schemes for large-scale Multiple-Input Multiple-Output (MIMO)systems operating under a Cloud Radio Access Network (C-RAN). The proposed research is articulated alongtwo main avenues: (1) Hybrid precoding/decoding design for large-scale MIMO; (2) Operation of massiveMIMO under C-RAN. Improvements will be sought in terms of complexity, bandwidth and power efficiency,while performance will be characterized under conditions of operation representative of 5G networks. Thisproposed research program is strongly supported by our industrial sponsor, InterDigital Canada, and has beencarefully crafted with company engineers. Under our current agreement, InterDigital will have primary accessto the new technologies developed by our team, as well as the opportunity to recruit top HQPs trained underthis project. In turns, critical feedbacks from the company will help us maintain a competitive edge andadvance our research along more challenging avenues. The proposed research is intended to help InterDigitaldevelop intellectual property in the area large-scale MIMO within C-RAN, foreseen as a key enablingtechnology for 5G. Our collaborative work will thus create new opportunities for Canada, helping our countryto maintain its position as a global leader in the information sector.