TCHCS: Free Space Optical and RF Wireless Hybrid Communication: Information Theoretic Models, Analysis and Fundamental Performance Limits

ecs - 0636613 p。随着无线射频（RF）通信技术的复杂性和需求不断增长，与此同时，自由空间光学（FSO）作为一种有吸引力的通信技术稳步出现，越来越明显的是，通过以互补方式结合其RF和无线光学组件的混合通信系统，可以获得整体系统性能的最佳增益。我们提出了一种新的易于处理的无线射频与光通信混合系统的信息理论模型。通过对这些新模型的理论分析，我们的主要目标是描述混合通信系统性能的基本限制，并为其组成子系统的设计和最佳使用提供定性和定量指导。思想价值：本方案的基础是对混合射频-光通信系统提出了新的信息论观点。这将使几个重要的经典结果以及信息理论的最新进展在制定混合射频光学系统的新数学模型，表征基本性能限制，并为其操作提供新的见解和工程指导方面发挥主要作用。拟议项目的预期成果包括对混合无线射频和光通信至关重要的领域的重大创新。此外，通过引入和分析新模型，解决基本开放问题，以及信息理论思想的新应用，它有可能导致信息理论的重要进展。本研究的具体目标如下：(i)使用适当的和信道模型，开发用于混合射频光学系统数学建模和分析的信息理论框架；（ii）就信道容量而言，描述混合系统性能的基本限制，即可靠信息传输的最大码率；（iii）根据信道条件制定射频和光学子系统互补使用的战略；（iv）在射频和光学模式中开发自适应信号和功率控制策略，作为信道条件的可用信息的函数。更广泛的影响：拟议的项目将为研究生提供一个丰富的学习环境，学习快速发展的混合无线射频和光通信系统技术。具体地说，技术办法的基本要素将在专题课程和研讨会上讨论；学生将在射频和光信号和功率控制方案的研究和性能评估中发挥主要作用，除了研究生在硕士和博士学位水平上参与项目。

ECS-0636613P. Narayan, University of Maryland College ParkAs wireless radio frequency (RF) communication technology continues to grow in sophistication and demand, and, at the same time, free space optics (FSO) steadily emerges as an attractive communication technology, it is becoming increasingly evident that the best possible gains in overall system performance can be reaped through a hybrid communication system which combines in a complementary manner its RF and wireless optical components. We propose a new and tractable class of information theoretic models for a hybrid wireless RF and optical communication system. Through our theoretical analysis of these new models, our prime objective is to characterize the fundamental limits of performance of the hybrid communication system, and to provide qualitative and quantitative guidelines for the design and optimal use of its component subsystems.Intellectual merit: The cornerstone of this proposal is a new information theoretic view of a hybrid RF-optical communication system. This will enable several important classical results as well as recent advances in information theory to play a primary role in formulating new mathematical models of hybrid RF-optical systems, characterizing fundamental performance limits, and offering new insights and engineering guidelines for their operation. Expected outcomes of the proposed project include significant innovations in areas of critical importance to hybrid wireless RF and optical communication. Furthermore, it has the potential of leading to important advances in information theory through the introduction and analysis of new models, solution of fundamental open problems, and new applications of information-theoretic ideas. The specific goals of this research are the following:(i) the development of an information theoretic framework for the mathematical modeling and analysis of a hybrid RF-optical system, using appropriate sum channel models;(ii) a characterization of the fundamental limits of performance of the hybrid system in terms of channel capacity, i.e., the maximum code rate of reliable information transfer;(iii) the development of strategies for the complementary use of the RF and optical subsystems based on channel conditions; and(iv) the development of adaptive signaling and power control strategies in the RF and optical modes as a function of available information on the channel conditions.Broader impacts: The proposed project will provide a rich learning environment for graduate students in the rapidly emerging technology of hybrid wireless RF and optical communication systems. Specifically, the basic elements of the technical approach will be discussed in Special Topics courses and seminars; and students will play a major role in the study and performance evaluation of the RF and optical signaling and power control schemes developed, in addition to graduate students' participation in the project at the level of M.S. and Ph.D. degrees.