权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

MIMO Wireless Networks: A Promising Rate Splitting Transceiver Architecture

MIMO 无线网络：一种有前途的速率分割收发器架构

基本信息

批准号：
EP/N015312/1
负责人：
Bruno Clerckx
金额：
$ 39万
依托单位：
Imperial College London
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2016
资助国家：
英国
起止时间：
2016 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FN015312%2F1
关键词：
MIMO Wireless Networks Promising Rate

项目摘要

Wireless communications have enabled a plethora of novel applications in recent years thanks to the continuous research efforts to increase the spectral efficiency (SE) and energy efficiency (EE) of wireless networks. Multi-antenna (MIMO) processing plays a central part towards harnessing those gains. MIMO has grown much beyond the original point-to-point channel and can nowadays refer to a diverse range of centralized and distributed deployments (e.g. multi-cell MIMO, cooperative/coordinated MIMO, distributed MIMO, massive MIMO, network MIMO).The fundamental bottleneck towards enormous spectral and energy efficiency benefits in multiuser MIMO networks lies in a huge demand for accurate channel state information at the transmitter (CSIT). This has become increasingly difficult to satisfy due to the increasing number of antennas and access points in next generation wireless networks relying on very dense heterogeneous networks and transmitters equipped with a very large number of antennas. CSIT inaccuracy results in a multi-user interference that significantly degrades the network performance.Looking backward, the problem has been to strive to apply techniques designed for perfect CSIT to scenarios with imperfect CSIT. The motivation behind this project is the following: wouldn't it be wiser to design wireless networks from scratch accounting for imperfect CSIT? In this project, we leverage recent progress in information theory and initial results by the PIs to address the above fundamental CSIT problem (and its resulting multi-user interference) by introducing a rate-splitting (RS) network architecture. Contrary to current approaches where transmission is operated in a broadcast manner with one private message per user, the approach considered consists in splitting one receiver's message into a common and a private part and superposing this common message on top of all users' private messages. The common message is decoded by all users but intended to only one of the users. Such approach has recently been found to be optimal from an information theoretic perspective in a multiuser deployment with imperfect CSIT and significant enhancements over conventional approaches in terms of spectral efficiency and power utilization have been demonstrated by the PIs. This visionary project conducted at Imperial College London and University of Edinburgh by leading experts in wireless communication theory aims at leveraging those recent findings to design and demonstrate the suitability of an RS-based MIMO wireless network architecture in a multitude of scenarios.To put together this novel wireless network solution in a credible fashion, this project focuses on designing 1) RS for a single transmission point, 2) RS for a large number of co-localized antennas (also called Massive MIMO) in microwave and millimeter-wave bands, 3) RS for a large number of distributed antennas representative of dense heterogeneous networks, 4) RS for multi-antenna relay channel and finally 5) evaluating the system level performance of RS-based networks.The project will be performed in partnership with leaders in equipment manufacturing and standardization (Toshiba and InterDigital) and in defence and emergency services (Qinetiq). The project demands a strong track record in wireless communication, MIMO signal processing, optimization, information theory and it is to be conducted in a unique research group with a right mix of theoretical and practical skills. With the above and given the novelty and originality of the topic, the research outcomes will be of considerable value to transform the future of wireless and give the industry a fresh and timely insight into the development of robust MIMO wireless networks, advancing UK's research profile of both wireless communication in the world. Its success would radically change the design of the physical layer of wireless communication systems and have a tremendous impact on standardization.

近年来，由于不断努力提高无线网络的频谱效率(SE)和能量效率(EE)，无线通信已经实现了大量的新应用。多天线(MIMO)处理在利用这些增益方面发挥着核心作用。MIMO已经远远超出了最初的点对点信道，现在可以指各种集中式和分布式的部署(如多小区MIMO、协作/协调MIMO、分布式MIMO、大规模MIMO、网络MIMO)。多用户MIMO网络中巨大的频谱和能量效率的瓶颈在于对发射端准确的信道状态信息(CSIT)的巨大需求。由于下一代无线网络中越来越多的天线和接入点依赖于非常密集的异类网络和配备了非常大量天线的发射机，这一点已经变得越来越难以满足。CSIT不准确会导致多用户干扰，从而显著降低网络性能。回过头来看，问题一直是努力将为完美CSIT而设计的技术应用于CSIT不完美的场景。这个项目背后的动机如下：考虑到不完美的CSIT，从头开始设计无线网络不是更明智吗？在这个项目中，我们利用信息论的最新进展和PI的初步结果，通过引入速率拆分(RS)网络架构来解决上述基本的CSIT问题(以及由此产生的多用户干扰)。与以每个用户一个私人消息的广播方式操作传输的当前方法相反，所考虑的方法包括将一个接收者的消息分成公共部分和私人部分，并将该公共消息叠加在所有用户的私人消息之上。公共消息由所有用户解码，但仅打算发送给其中一个用户。最近发现，在CSIT不完善的多用户部署中，从信息论的角度来看，这种方法是最优的，并且PI已经证明了在频谱效率和功率利用率方面相对于传统方法的显著增强。这个由伦敦帝国理工学院和爱丁堡大学领导的无线通信理论专家进行的富有远见的项目旨在利用这些最新的发现来设计和演示基于RS的MIMO无线网络体系结构在多种场景中的适用性。为了以可信的方式将这种新的无线网络解决方案组合在一起，该项目集中于设计1)用于单个传输点的RS，2)用于微波和毫米波频段的大量协同定位天线(也称为海量MIMO)的RS，3)用于代表密集异质网络的大量分布式天线的RS，4)用于多天线中继信道的RS，以及最后5)评估基于RS的网络的系统级性能。该项目将与设备制造和标准化(东芝和InterDigital)以及国防和紧急服务(Qinetiq)的领导者合作进行。该项目需要在无线通信、MIMO信号处理、优化、信息理论方面有良好的记录，并将在一个理论和实践技能恰当结合的独特研究小组中进行。综上所述，鉴于本课题的新颖性和原创性，研究成果将对改变无线的未来具有相当大的价值，并使业界对稳健的MIMO无线网络的发展有一个新的和及时的见解，推动英国在这两个领域的研究在世界上的地位。它的成功将从根本上改变无线通信系统物理层的设计，并对标准化产生巨大影响。