CIF:Small: Asynchrony and Limited Feedback in Next Generation Multiple Access

CIF:Small：下一代多路访问中的异步和有限反馈

• 批准号: 2328075
• 负责人: Hamid Jafarkhani
• 金额: $ 60万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-12-01 至 2026-11-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2328075&HistoricalAwards=false
• 关键词: CIF; Small; Asynchrony; Limited; Feedback

Wireless communications have become an integral part of modern society, with significant impact in improving the quality of life. The applications of wireless communications in different parts of the economy and their use in creating and expanding new businesses have created a tremendous demand for higher data throughputs. The unmet need for higher transmission data rates requires designing more efficient wireless communication networks. To increase the efficiency of the next generation of wireless networks, the concurrent transmission of different users using the same resources is unavoidable. Understanding how to deal with asynchrony and limited feedback in the next generation of communication systems, as pursued in this project, is essential for designing the wireless networks of the future. The project will also integrate its findings into coursework and educational initiatives in next-generation wireless networks.Existing wireless communication standards heavily rely on orthogonal multiple access systems in which each user is allocated orthogonal time/frequency/code resources. This is not suitable for massive connectivity and simultaneous transmission of a huge amount of data. Therefore, more efficient multiple access methods that allow multiple users to simultaneously access the same wireless resources have been proposed as a remedy. The paradigm shift from orthogonal multiple access to other possible multiple access designs that are, for example, non-orthogonal and grant-free is dubbed next generation multiple access (NGMA). While perfect synchronization and channel state information assumptions may be reasonable for orthogonal multiple access, such assumptions are neither realistic nor desirable for NGMA systems. Therefore, there is an unmet need to revisit the role of asynchrony and limited channel state information in NGMA systems as considered in this project. Analyzing the performance and the design of different NGMA systems with asynchronous transmission and limited feedback will be performed in this project.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

无线通信已成为现代社会不可或缺的一部分，对提高生活质量具有重大影响。无线通信在经济的不同部分中的应用以及它们在创建和扩展新业务中的使用已经产生了对更高数据吞吐量的巨大需求。对更高传输数据速率的未满足的需求要求设计更高效的无线通信网络。为了提高下一代无线网络的效率，使用相同资源的不同用户的并发传输是不可避免的。了解如何处理下一代通信系统中的冗余和有限的反馈，在这个项目中所追求的，是设计未来的无线网络的关键。现有的无线通信标准严重依赖于正交多址系统，在该系统中，每个用户都被分配正交的时间/频率/码资源。这不适合大规模连接和大量数据的同时传输。因此，已经提出了允许多个用户同时接入相同无线资源的更有效的多址方法作为补救。从正交多址接入到例如非正交和免授权的其他可能的多址接入设计的范例转移被称为下一代多址接入（NGMA）。虽然完美的同步和信道状态信息假设对于正交多址可能是合理的，但是这样的假设对于NGMA系统既不现实也不期望。因此，有一个未满足的需要，重新审视的作用，NGMA系统中考虑在这个项目中的冗余和有限的信道状态信息。分析性能和设计的不同NGMA系统与异步传输和有限的反馈将在这个项目中执行。这个奖项反映了NSF的法定使命，并已被认为是值得的支持，通过评估使用基金会的智力价值和更广泛的影响审查标准。