CAREER: Full-duplex wireless networks by means of reflected power: Theory and applications

职业：利用反射功率的全双工无线网络：理论与应用

• 批准号: 1453426
• 负责人: Besma Smida
• 金额: $ 42.54万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2016-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1453426&HistoricalAwards=false
• 关键词: CAREER; Full; duplex; wireless; networks

One key limit to spectrum utilization efficiency involves the current practice of half-duplex communication, in which a node cannot transmit and receive on the same frequency at the same time. Some recent studies have provided experimental evidence and methodologies for full-duplex communication. To date, however, all full-duplex demonstrations have been predicated on the principle that the transmitter and the receiver must generate their own radio-carrier waves independently, which in practice results in a high level of self-interference at both nodes. The objective of this CAREER project is to create reliable full-duplex wireless networks by means of reflected power.This project will pursue backscatter modulation, where electromagnetic waves are modulated and reflected by the same antenna that receives them. Within this framework, the end-user receives a signal free of self-interference. This research offers a new paradigm for two-way wireless networks: rather than avoiding self-interference as in half-duplex -- or combating self-interference as in full-duplex -- nodes will re-use the received interfering radio-carrier waves to transfer information. The results of this analysis will advance the knowledge of antenna scattering for a wide range of applications. The proposed implementation in hardware will incite an exchange between algorithm innovation and hardware implementation, pushing the limit of spectrum-efficiency communication.The principal investigator will also embed the proposed research into pedagogy by creating a center of wireless communications at Purdue University Calumet. The center will provide a range of opportunities for undergraduate and graduate students to gain direct experience in testing, evaluating, and improving backscatter modulation for full-duplex communications. Given the current pervasiveness of two-way wireless communication, the results of this research can be used to significantly increase the spectral efficiency of future wireless networks.

频谱利用效率的一个关键极限涉及当前半双链通信的实践，其中节点不能同时以相同的频率传输和接收。最近的一些研究为全双工通信提供了实验证据和方法。然而，迄今为止，所有全双工示范都是基于以下原则：发射器和接收器必须独立生成自己的无线电载波波，实际上，这在两个节点上都会产生高度的自我干扰。这个职业项目的目的是通过反射能力来创建可靠的全载无线网络。此项目将进行反向散射调制，其中电磁波受到接收它们的天线进行调节和反射。在此框架内，最终用户会收到一个没有自我干扰的信号。这项研究为双向无线网络提供了一个新的范式：而不是避免像半封面那样避免自我干扰 - 或像全双工一样打击自我干扰 - 节点会重新利用接收到的干扰无线电载波波来传输信息。该分析的结果将提高对广泛应用的天线散射知识。拟议中的硬件实施将促使算法创新与硬件实施之间进行交流，从而推动频谱效率通信的限制。首席研究者还将通过在普渡大学Calumet建立无线通信中心来嵌入拟议的教学研究研究。该中心将为大学生和研究生提供一系列机会，以获得直接的测试，评估和改善全双工通信的反向散射调制经验。鉴于当前双向无线通信的普遍性，这项研究的结果可用于显着提高未来无线网络的光谱效率。