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Collaborative Research: SWIFT: Wideband Spectrum Coexistence Enabled by Photonic Circuits: Cross-Layer Design and Implementation

合作研究：SWIFT：光子电路实现宽带频谱共存：跨层设计和实现

基本信息

批准号：
2128451
负责人：
Wade Trappe
金额：
$ 17万
依托单位：
Rutgers University New Brunswick
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-09-01 至 2024-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2128451&HistoricalAwards=false
关键词：
Collaborative Research SWIFT Wideband Spectrum

项目摘要

Evolving communication systems rely on using increasingly higher frequencies for larger channel bandwidths. The increased channel capacities enabled by higher carrier frequencies provide high speed communication for commercial and active users, however, these benefits do not extend to passive users, such as radio astronomy. The focus of the proposed effort is to create a framework for spectrum coexistence that is beneficial for both active and passive users. Instead of simply switching to higher and undeveloped frequencies - which passive users cannot - the proposed research uses high frequency, optical signal carriers for interference separation, enabling the coexistence of active and passive users at the same time and in the same physical location. The proposed coexistence solution will enable continuous availability of wideband spectrum for passive users, an important requirement for detecting unknown signals, since the bandwidth and the time window for unknown astronomical, atmospheric and geospace signals cannot be manipulated. The proposal involves collaboration between one private and two state universities in New Jersey, and will support education at various levels: for pre-college students, the PIs will develop games and instructive presentations that integrate the explanation of science fundamentals. Undergraduate students will access the evolution of communication technologies through Rowan University’s 8-semester research-based Engineering Clinic program. Commercial applications will be explored through industrial partners within local area of the PI campuses.Since there is a projected increase in interference at both high and low RF frequencies, which will impair the success of both commercial and scientific use of spectrum, it is necessary to develop technologies that will mitigate the interference observed by all users of the radio spectrum, ultimately allowing better coexistence between the wide range of applications dependent on radio spectrum. The proposed system is implemented by redesigning the hardware and exploring communication protocols at multiple layers. In the physical layer, the photonic system separates a mixed received signal in the congested radio spectrum by upconverting the signal carriers to optical frequencies, providing over 100GHz of bandwidth in a single channel. In the network level, communication protocols are redesigned to enable passive users to continuously access to wideband spectrum and coexist with active users. The network layer protocol will optimize the deployment of the hardware system to minimize the cost of new infrastructures, better share spectrum, and improve communication throughput. The intellectual merit stems from the completely orthogonal approach proposed to address the challenges of radio spectrum, and the seamless integration of hardware innovation with communication protocols. By harnessing the unique properties of optical carriers, the photonic system processes analog signals before digitization, which eliminates both the current bandwidth limit and the resolution limit. The hardware innovation creates unprecedented resources for communication applications. The photonic system functions as a platform that provides new resources for both the existing and emerging spectrum sharing methods, specifically, dynamic spectrum allocation, interference alignment, etc. With a multi-layer design, the proposed system will advance the understanding of spectrum usage by enabling conexistence of systems with diverse power levels and large bandwidths.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.

不断发展的通信系统依赖于使用越来越高的频率来获得更大的信道带宽。更高的载波频率增加了信道容量，为商业和主动用户提供了高速通信，然而，这些好处并没有扩展到被动用户，如射电天文学。拟议努力的重点是创建一个频谱共存的框架，这是有益的主动和被动用户。而不是简单地切换到更高和未开发的频率-被动用户不能-拟议的研究使用高频，光信号载波进行干扰分离，使有源和无源用户在同一时间和同一物理位置共存。拟议的共存解决方案将使被动用户能够连续获得宽带频谱，这是检测未知信号的一个重要要求，因为未知天文、大气和地球空间信号的带宽和时间窗口无法操纵。该提案涉及新泽西的一所私立大学和两所州立大学之间的合作，并将支持各级教育：对于大学预科学生，PI将开发游戏和指导性演示，整合科学基础的解释。本科生将通过罗文大学为期8个学期的研究型工程诊所课程了解通信技术的发展。由于预计高频和低频的干扰会增加，这将影响频谱的商业和科学用途的成功，因此有必要开发技术，以减轻所有无线电频谱用户所观察到的干扰，最终允许依赖于无线电频谱的广泛应用之间更好的共存。该系统通过重新设计硬件和探索多层次的通信协议来实现。在物理层中，光子系统通过将信号载波上变频到光频率来分离拥塞无线电频谱中的混合接收信号，从而在单个信道中提供超过100 GHz的带宽。在网络层，重新设计了通信协议，使被动用户能够持续接入宽带频谱，并与主动用户共存。网络层协议将优化硬件系统的部署，以最大限度地减少新基础设施的成本，更好地共享频谱，提高通信吞吐量。其智力优势源于为应对无线电频谱挑战而提出的完全正交方法，以及硬件创新与通信协议的无缝集成。通过利用光载波的独特特性，光子系统在数字化之前处理模拟信号，这消除了当前的带宽限制和分辨率限制。硬件创新为通信应用创造了前所未有的资源。光子系统作为一个平台，为现有的和新兴的频谱共享方法提供新的资源，具体地说，动态频谱分配，干扰对准等。通过使具有不同功率水平和大带宽的系统共存，拟议中的系统将促进对频谱使用的理解。该奖项反映了美国国家科学基金会的法定使命，并被认为是值得的通过使用基金会的知识价值和更广泛的影响审查标准进行评估来提供支持。