CIF: Small: Challenges and opportunities of timing mismatch in multi-user wireless networks

CIF：小：多用户无线网络中定时不匹配的挑战和机遇

• 批准号: 1526780
• 负责人: Hamid Jafarkhani
• 金额: $ 50万
• 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: 2015
• 资助国家: 美国
• 起止时间: 2015-10-01 至 2019-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1526780&HistoricalAwards=false
• 关键词: CIF; Small; Challenges; opportunities; timing

The tremendous expansion of wireless communications has improved the quality of life, provided economical growth, and assisted the expansion of new businesses. At the same time, the new opportunities have created a huge demand for higher transmission data rates and a need for designing more efficient wireless communication networks. Understanding how to deal with timing mismatch and imperfect channel information in communication networks is essential for designing the wireless networks of the future.Recently, interference management techniques have provided enormous improvements in reliability and bandwidth utilization. These improvements are achieved under ideal assumptions such as perfect channel knowledge and perfect synchronization. In this project, the PIs will revisit the availability of perfect channel information and more importantly the assumption of perfect synchronization in multi-user wireless networks. This project analyzes the effects of timing mismatch on the performance of multi-user wireless networks, from the viewpoint of sampling diversity, with the aim to explore its benefits in the presence of timing mismatch. This will lead to a theoretical derivation of optimal timing mismatch values and the corresponding optimal timing delays, followed by the practical design of communication systems that benefit from timing mismatch and approach the theoretical performance bounds, under a comprehensive set of channel models.

无线通信的巨大发展提高了生活质量，促进了经济增长，并有助于新业务的扩展。与此同时，新的机会已经产生了对更高的传输数据速率的巨大需求以及对设计更高效的无线通信网络的需求。了解如何处理通信网络中的定时失配和不完美的信道信息对于设计未来的无线网络是至关重要的。最近，干扰管理技术在可靠性和带宽利用率方面提供了巨大的改善。这些改进是在理想的假设下实现的，例如完美的信道知识和完美的同步。在这个项目中，PI将重新审视完美的信道信息的可用性，更重要的是在多用户无线网络中的完美同步的假设。本计画从取样分集的观点分析时基不匹配对多使用者无线网路效能的影响，目的在于探讨取样分集在时基不匹配下的好处。这将导致一个理论推导的最佳定时失配值和相应的最佳定时延迟，其次是通信系统的实际设计，受益于定时失配和方法的理论性能界限，在一组全面的信道模型。