当前位置: X-MOL 学术IEEE J. Sel. Area. Comm. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Guest Editorial Special Issue on Next Generation Multiple Access—Part II
IEEE Journal on Selected Areas in Communications ( IF 16.4 ) Pub Date : 2022-04-15 , DOI: 10.1109/jsac.2021.3139737
Yuanwei Liu , Shuowen Zhang , Zhiguo Ding , Robert Schober , Naofal Al-Dhahir , Ekram Hossain , Xuemin Shen

As the long-term evolution (LTE) system is reaching maturity and the fifth-generation (5G) systems are being commercially deployed, researchers have turned their attention to the development of next-generation wireless networks. Compared to current wireless networks, on the one hand, next-generation wireless networks are expected to achieve significantly higher capacity, extremely low latency, ultra-high reliability, as well as massive and ubiquitous connectivity for supporting diverse disruptive applications (e.g., virtual reality (VR), augmented reality (AR), and industry 4.0). On the other hand, the evolution toward next-generation wireless networks requires a paradigm shift from the communication-oriented design to a multi-functional design, including communication, sensing, imaging, computing, and localization. Looking back at the history of wireless communication systems, multiple access (MA) techniques have been key enablers. From the first generation (1G) to the fifth generation (5G), orthogonal multiple access (OMA) schemes are mainly employed, where multiple users are allotted in orthogonal frequency/time/code resources, and the uplink transmission of the code code-division multiple-access (CDMA) uses non-orthogonal code resources. However, given the enormous challenges and diverse services of next-generation wireless networks, which significantly differ from that in current and previous wireless networks, existing MA schemes may not be applicable. As a result, a fundamental issue is the design of next-generation multiple access (NGMA) techniques. The key concept of NGMA is to enable a very large number of users/devices to be efficiently, flexibly, and intelligently connected with the network over the given wireless radio resources to not only satisfy stringent communication requirements but also realize heterogeneous functions. The investigation of NGMA is still in the infancy stage, and extensive research efforts have to be devoted to areas, including but not limited to 1) the development of new MA schemes, such as non-orthogonal multiple access (NOMA) and space division multiple access (SDMA), which are capable of achieving higher bandwidth efficiency and higher connectivity compared with conventional MA schemes; 2) the development of innovative techniques, such as reconfigurable metasurfaces, random access, advanced modulation, and channel coding, which are beneficial to the overall design of NGMA; and 3) the exploitation of advanced machine learning (ML) tools and big data techniques for providing effective solutions to address newly emerging NGMA problems.

中文翻译:

关于下一代多路访问的客座社论特刊——第二部分

随着长期演进(LTE)系统的成熟和第五代(5G)系统的商业部署,研究人员将注意力转向了下一代无线网络的发展。与当前的无线网络相比,一方面,下一代无线网络有望实现显着更高的容量、极低的延迟、超高的可靠性以及海量和无处不在的连接,以支持各种颠覆性应用(例如,虚拟现实) (VR)、增强现实 (AR) 和工业 4.0)。另一方面,向下一代无线网络的演进需要从面向通信的设计转变为多功能设计,包括通信、传感、成像、计算和定位。回顾无线通信系统的历史,多路访问 (MA) 技术已成为关键推动因素。从第一代(1G)到第五代(5G),主要采用正交多址接入(OMA)方案,为多个用户分配正交频/时/码资源,码分码上行传输多址接入 (CDMA) 使用非正交码资源。然而,鉴于下一代无线网络的巨大挑战和多样化的服务,与当前和以前的无线网络有很大不同,现有的 MA 方案可能不适用。因此,一个基本问题是下一代多路访问 (NGMA) 技术的设计。NGMA 的关键概念是使大量用户/设备能够高效、灵活、在给定的无线电资源上与网络智能连接,既满足严格的通信要求,又实现异构功能。NGMA 的研究仍处于起步阶段,需要在以下领域进行广泛的研究,包括但不限于 1) 开发新的 MA 方案,例如非正交多址 (NOMA) 和空分多址接入(SDMA),与传统的MA方案相比,能够实现更高的带宽效率和更高的连接性;2)创新技术的发展,如可重构超表面、随机访问、高级调制和信道编码,有利于NGMA的整体设计;
更新日期:2022-04-19
down
wechat
bug