CAREER: Aspiring for Spectrum Freedom Through MIMO Overlay Transmission

拟议的项目旨在探索覆盖传输的概念，作为涉及多个收发器对的无线网络中的替代设计标准，即，经典干扰信道（IFC）重叠传输是指多个用户的信号在时间和频率上重叠的通信方式。据设想，在理论和技术的推动下，将根据这项工作，更有效的频谱利用率可以通过允许并发传输，而不损害每个用户的服务质量。该项目的智力价值在于其追求的新颖的MIMO（多输入多输出）覆盖传输概念的无线网络设计。这与现有的覆盖传输不同，例如码分多址系统，其抗干扰性以带宽扩展为代价。相反，我们证明了MIMO IFC中的空间分集和多用户分集之间的相互作用，使叠加传输显着优于正交传输。这也与单输入单输出系统形成了鲜明的对比，在单输入单输出系统中，覆盖传输在频谱效率上没有明显的优势，而正交传输对于IFC来说，所提出的MIMO覆盖传输在无线网络中具有广泛的应用。对于蜂窝网络，谨慎使用MIMO覆盖传输将使新的频率复用方案能够改善信道资源管理。在adhoc网络中，将MIMO覆盖传输纳入网络协议将有助于提高网络和端到端的吞吐量。MIMO覆盖传输具有上级频谱效率，并有可能实现新的网络协议，有望缓解当今无线系统面临的频谱短缺问题。沿着拟议的研究项目，研究所设计了一系列的教育措施，包括透过创新的课堂教学促进主动学习、透过课程发展提升研究生和本科生课程，以及让不同背景的本科生参与这个计划。这个计划的广泛影响是多方面的。通过让研究生和本科生参与具有智力挑战性的活动，学生将在各种教育活动中扮演更积极的角色。鼓励和促进研究生参加专业会议将有助于培养学生的科研热情。让本科生参与精心设计的研究项目将有助于培养他们对科学活动的兴趣。课程开发计划迎合了学生在通信和信号处理领域日益增长的需求。在研究生阶段，它将为许多本地工业和研究机构提供一个重要的场所，为他们的员工提供继续教育。PI对本科课程开发和教学的热情将确保锡拉丘兹大学电气工程与计算机科学系正在进行的本科课程改革取得成功。

The proposed project intends to explore the notion of overlay transmission as an alternative design criterion in wireless networks involving multiple transceiver pairs, i.e., the classical interference channels (IFC). Overlay transmission refers to the communication mode where the signals from multiple users superimpose in time and frequency. It is envisioned that, facilitated by the theory and technologies to be developed under this effort, more efficient spectrum utilization can be achieved by allowing concurrent transmissions without compromising each users Quality of Service.The intellectual merit of the project lies in its pursuit of the novel MIMO (multiple-input multiple-output) overlay transmission concept in wireless network design. This differs with existing overlay transmission, such as the code division multiple access systems, whose interference resistance comes at the cost of bandwidth expansion. Instead, we demonstrate that the interplay between spatial diversity and multiuser diversity in MIMO IFC enables overlay transmission to significantly outperform orthogonal transmission. This is also in sharp contrast to the single-input single-output system where overlay transmission has no tangible advantage in spectral efficiency over orthogonal transmission for IFC.The proposed MIMO overlay transmission has broad applications in wireless networks. For cellular networks, prudent use of MIMO overlay transmission will enable novel frequency reuse schemes toimprove channel resource management. In ad hoc networks, incorporating MIMO overlay transmissioninto the networking protocols will help enhance both the network and end-to-end throughputs.MIMO overlay transmission, with its superior spectral efficiency and its potential to enable novelnetworking protocols, has the promise to bring relief to the spectrum scarcity issue encountered intodays wireless systems.Along with the proposed research project, the PI has designed a set of education initiatives.These include promoting active learning through innovative classroom teaching, enhancing graduateand undergraduate curriculum through course development, and involving undergraduate studentswith diverse background in this project.The broader impacts of this project are multi-faceted. By engaging students at both graduateand undergraduate levels in intellectually challenging activities, the students will assume a moreactive role in various education activities. Encouraging and facilitating graduate students participationin professional meetings and conferences will help instill enthusiasm in scientific research into thestudents. Involving undergraduate students in carefully designed research projects will help fostertheir interest in scientific activities. The curriculum development plan caters to the increasing needsof students in the area of communication and signal processing. At the graduate level, it will providean important venue for many local industries and research institutions for the continuing educationof their employees. The PIs enthusiasm in developing and teaching undergraduate courses will ensurethe success of the ongoing undergraduate curriculum reform in the Department of ElectricalEngineering and Computer Science at Syracuse University.