CNS: NETS: SMALL: Collaborative research: Collision: Friend or Foe?

CNS：NETS：小型：合作研究：碰撞：朋友还是敌人？

• 批准号: 0914955
• 负责人: Saswati Sarkar
• 金额: $ 24.99万
• 依托单位: University of Pennsylvania
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0914955&HistoricalAwards=false
• 关键词: CNS; NETS; SMALL; Collaborative; research

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). Traditionally collisions of transmitted packets in wireless networks have been treated as a hindrance. If however the information contained in the packets is recovered even after the packets collide, significantly higher transmission rates can be attained in wireless systems. The project is developing a novel network-friendly approach for resolving collisions. The relevant information is being extracted from collided packets through sophisticated signal processing and higher layer resource allocation schemes that function in conjunction with the physical layer techniques. The signal processing techniques recover the relevant information by exploiting source of diversity that are present in a collision, such as small user delays and carrier frequency offsets. The higher layer resource allocation techniques maximize the throughput and minimize the delay in end-to-end delivery of information through the exploitation of collision resolution capabilities at the physical layer. This research will lead to a quantum leap in performance of wireless systems which will in turn facilitate a plethora of advanced applications such as high quality multimedia transmission over wireless networks, rescue and recovery operations, etc. Results will be disseminated through (i) publications of scholarly papers in premier journals and conferences and available through the world-wide-web, and (ii) direct interactions with wireless industry and non-profit organizations which will facilitate the design of wireless systems that can be effectively used in daily lives.

该奖项根据 2009 年《美国复苏和再投资法案》（公法 111-5）提供资金。传统上，无线网络中传输数据包的冲突被视为一种障碍。然而，如果即使在数据包冲突后也可以恢复数据包中包含的信息，则可以在无线系统中获得显着更高的传输速率。该项目正在开发一种新颖的网络友好方法来解决冲突。通过复杂的信号处理和与物理层技术结合起作用的高层资源分配方案，从冲突数据包中提取相关信息。信号处理技术通过利用冲突中存在的分集源（例如小用户延迟和载波频率偏移）来恢复相关信息。高层资源分配技术通过利用物理层的冲突解决能力来最大化吞吐量并最小化端到端信息传送的延迟。这项研究将导致无线系统性能的巨大飞跃，从而促进大量先进应用的发展，例如无线网络上的高质量多媒体传输、救援和恢复操作等。研究结果将通过 (i) 出版物进行传播一流期刊和会议上的学术论文以及通过万维网提供的学术论文，以及（ii）与无线行业和非营利组织的直接互动，这将有助于设计可在日常生活中有效使用的无线系统。