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Collaborative Research: EARS: Interference mitigation by stream decomposition enabled by liquid-metal adaptive antennas

合作研究：EARS：通过液态金属自适应天线实现流分解来减轻干扰

基本信息

批准号：
1546969
负责人：
Aria Nosratinia
金额：
$ 19.78万
依托单位：
University of Texas at Dallas
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2015
资助国家：
美国
起止时间：
2015-09-15 至 2019-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1546969&HistoricalAwards=false
关键词：
Collaborative Research EARS Interference mitigation

项目摘要

Interference between users is one of the main impediments for the growth of wireless networks such as the ones used by mobile phones. Developing practical methods to mitigate interference is critical for the future of wireless technology. The proposed research addresses the problem of interference, and therefore has a large potential impact on economic growth as well as quality of life. This project has two interconnected components. First, based on recent information theory results, communication streams will be decomposed into many small streams; these can be managed, combined, and split to combat interference. Second, adaptive liquid-metal antennas will be investigated for interference mitigation. As liquid metals can be made to change their physical shape, they can enable antennas that can be adjusted to reduce interference. Research and education for this project will be tightly integrated through Vertically Integrated Projects that involve students ranging from PhD students to sophomore-level undergraduates, including under-represented minority and female students. The results of this research will be disseminated widely through the web, technical conferences, and seminars. Exciting discoveries in recent years have pushed the boundaries of understanding interference. The theoretical capacity of interference channels in several operating modes has been established, and new theoretical techniques such as interference alignment have been discovered. However, many practical challenges stand in the way of realizing these promising techniques. This project has two interconnected components for developing interference-mitigation techniques for wireless networks that create a new direction in interference mitigation aimed at practicality and wide applicability. The first component of the project decomposes the communication stream into "microstreams" to fit the transmissions into the contours of available opportunities, in a manner that improves rates while limiting the damage of interference. The broad principle of breaking communication into many small pieces has a long and distinguished pedigree, including ARQ in the data link layer and TCP/IP in higher layers. The proposed research introduces a novel manifestation of this time-tested principle to produce new approaches that combat interference in the physical layer. The second component of the project investigates adaptive liquid-metal antennas that generate radiation patterns to avoid interference in a manner not possible with signal processing alone; in particular their unique flexibility helps to avoid "singular" values of channel gains that prevent interference mitigation. The unique strengths of liquid-metal antennas are perfectly showcased in this application, because the exact manner of microstream combining can have a strong effect on performance, and this is where liquid-metal antennas promise to have a strong impact. The proposed activity will play an important role in the advancement of knowledge and understanding in the field of wireless interference. The project will develop practical methods for coding and decoding under interference. Furthermore, it will lead to a basic understanding of how liquid-metal antennas can affect capacity in interference networks.

用户之间的干扰是无线网络（如移动电话所使用的网络）发展的主要障碍之一。开发实用的方法来减少干扰对无线技术的未来至关重要。拟议的研究解决了干扰问题，因此对经济增长和生活质量有很大的潜在影响。这个项目有两个相互关联的部分。首先，基于最新的信息论研究成果，将通信流分解为许多小流；它们可以被管理、组合和分割以对抗干扰。其次，将研究自适应液体金属天线的干扰抑制。由于液态金属可以改变其物理形状，它们可以使天线可以调整以减少干扰。该项目的研究和教育将通过纵向整合项目紧密结合，涉及的学生范围从博士生到大二本科生，包括少数民族和女性学生。这项研究的结果将通过网络、技术会议和研讨会广泛传播。近年来令人兴奋的发现推动了对干涉的理解。建立了多种工作模式下干涉信道的理论容量，并发现了干涉对准等新的理论技术。然而，许多实际的挑战阻碍了这些有前途的技术的实现。该项目有两个相互关联的组成部分，用于开发无线网络的干扰缓解技术，为以实用性和广泛适用性为目标的干扰缓解创造了新的方向。该项目的第一个组成部分是将通信流分解为“微流”，以使传输符合可用机会的轮廓，从而在限制干扰损害的同时提高速率。将通信分解成许多小块的广泛原则有很长的历史，包括数据链路层的ARQ和更高层的TCP/IP。提出的研究引入了这一久经考验的原理的一种新表现，以产生对抗物理层干扰的新方法。该项目的第二个组成部分是研究自适应液态金属天线，这种天线产生辐射模式，以避免干扰，而单靠信号处理是不可能做到的；特别是其独特的灵活性有助于避免阻碍干扰缓解的信道增益的“单一”值。液态金属天线的独特优势在这个应用中得到了完美的展示，因为微流结合的确切方式会对性能产生强烈的影响，而这正是液态金属天线有望产生强烈影响的地方。所提出的活动将在提高对无线干扰领域的认识和理解方面发挥重要作用。该项目将开发在干扰下编码和解码的实用方法。此外，它将导致对液体金属天线如何影响干扰网络容量的基本理解。