IHCS: Multiplexing, Modulation, Coding and Detection Technologies Enabling Hybrid RF-Optical and Microwave-Optical Communications

智力优势：亚利桑那大学提出了一个多学科的研究计划，解决一个重要的技术挑战：由于大带宽失配的RF和光通信技术的不兼容性。另一个重要成果是开发了新的调制和编码技术，使在强大气湍流下能够进行可靠的通信。拟议的研究计划的具体目标包括：（一）开发有效的接口，使混合射频自由空间光传输，包括正交频分复用和多级脉冲位置调制;（二）开发有效的调制技术，能够在强大气湍流，包括多激光器多探测器的概念; ㈢开发有效的编码技术，如低密度奇偶校验码，以提高自由空间光学系统的可靠性; ㈣开发改进的系统模型和信道容量研究，以评估最终性能极限; ㈤对所提议的方法进行实验验证。更广泛的影响：通过将编码，调制和自由空间光通信的理论专业知识与数字建模专业知识和最先进的实验基础设施相结合，首席研究员处于独特的地位，可以开发新一代混合RF自由空间光学系统，因此，对光网络技术的发展做出了重大贡献美国和国外的信息基础设施。项目的跨学科性质（即，结合光学物理学，光学器件技术和通信/编码理论与实践），预计将促进跨学科教育，并为学生创造新的机会，获得行业实习，从而加强大学与行业之间的合作。主要的教育目标包括：（一）设立一个研究生研讨会，以传播关于自由空间光通信的新信息，（二）开发一个新的研究生课程，题为？自由空间光通信(iii)将迭代解码技术结合到数字通信系统课程序列中，以及（iv）出版关于光通信的调制和编码的章节或专著。

Intellectual Merit: University of Arizona proposes a multidisciplinary research program addressing an important technological challenge: the incompatibility of RF and optical communication technologies due to the large bandwidth mismatch. Another important outcome is development of novel modulation and coding techniques enabling reliable communication under strong atmospheric turbulence. The specific goals of the proposed research program include: (i) Development of efficient interfaces to enable the hybrid RF-free-space optical transmission including orthogonal frequency division multiplexing and multilevel pulse-position modulation; (ii) Development of efficient modulation techniques capable of operating under strong atmospheric turbulence, including the multi-laser-multi-detector concept; (iii) Development of efficient coding techniques, such as low-density parity-check codes, to improve the reliability of the free-space optical system; (iv) Development of refined system models and channel capacity studies to assess the ultimate performance limits; and (v) Experimental validation of the proposed methods. Broader Impact: By combining the theoretical expertise in coding, modulation, and free-space optical communications, with the numerical-modeling expertise and state-of-the-art experimental infrastructure, the Principal Investigators are in a unique position to develop a new generation of hybrid RF-free-space optical systems, contributing therefore, significantly to the evolution of optical network technologies and the information infrastructure in the United States and abroad. The interdisciplinary nature of the project (i.e., combining optical physics, optical device technologies, and communication/coding theory and practice) is expected to foster cross-disciplinary education, and to create new opportunities for students to obtain industry internships and therefore enhance collaboration between the University and industry. The main educational objectives include: (i) establishing a graduate seminar for dissemination of new information on free-space optical communications, (ii) developing a new graduate course entitled ?Free-Space Optical Communications,? (iii) incorporating iterative decoding techniques into the Digital Communications Systems course-sequence, and (iv) publishing a chapter or a monograph on modulation and coding for optical communications.