CIF: Small: Wireless Massive Access: From Fundamental Limits to Practical Design

该项目将开发支持密集部署的无线设备的理论和技术。项目成果将满足对新无线技术的迫切需求，从而实现物联网（IoT），促进医疗保健、交通、智慧城市和公共安全等领域的重要应用。由于无线电频谱有限，关键是设计一个高效的系统来支持无线大规模接入，其中许多设备都很小，而且是电池供电的。具体而言，本项目将在现实的假设下研究无线大规模接入的基本限制，并开发接近这些限制的实用设计。本项目通过研究现有多用户系统理论之外的大量用户模型，推进通信、信息论和信号处理的领域。该项目将重点关注两个主要的技术挑战：1。在大量设备的情况下发展通信系统的理论。重要的实际问题，如网络和渠道的不确定性，将在基本层面上解决，而不是作为事后的想法。2.设计可伸缩的代码，是弹性的各种信道的不确定性。学习技术将被应用于利用设备特性，以减少不确定性。该奖项反映了NSF的法定使命，并被认为值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估。

This project will develop theory and techniques for supporting densely deployed wireless devices. The project outcome will meet the urgent need for new wireless technologies enabling the Internet of Things (IoT) that facilitates important applications in healthcare, transportation, smart city, and public safety, to name a few. With limited radio spectrum, the key is to design an efficient system to support wireless massive access, where many devices are small and battery-powered. Specifically, this project will study the fundamental limits of wireless massive access under realistic assumptions and develop practical designs that approach those limits.This project pushes the envelope of communications, information theory, and signal processing by studying models with a massive number of users beyond the existing theory for multiuser systems. This project will focus on two main technical challenges: 1. To develop a theory for communication systems in the regime of a massive number of devices. Important practical issues such as asynchrony and channel uncertainties will be addressed at the fundamental level rather than as an afterthought. 2. To design scalable codes that are resilient to various channel uncertainties. Learning techniques will be applied to exploit device idiosyncrasies to reduce uncertainties. Key design concepts will be evaluated through experimentation with software-defined radios.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.