ITR: Multi-user, Multi-antenna Networks: Achieving High Capacity in a Mutual Interference Environment

当前的视听记录、交流和回放提供了世界随时间变化的单一的、二维的透视。人类生活在一个四维的世界里，在这个世界里，他们以自己的意志(随着时间的推移在三维空间中)移动，从任何角度体验世界。传感器、计算机和网络技术的进步现在使使用多摄像头和麦克风以及复杂的处理算法的新系统成为可能，以提供前所未有的沉浸式记录和观看能力。这项研究将通过扩展自适应波束形成、非平稳信号的多传感器信号处理和多维信号表示的基本新进展，开发新的信号处理技术，以从多个声音和视频传感器重建在空间和时间的任意位置的音频和视频记录。实用的四维视听记录、传输和回放，或远程现实，将用低成本的常规传感器连接到联网的计算机上进行演示，从而证实了所提出的方法和应用的实用性。

Abstract0313056Swindlehurst, ArnoldBrigham Young UniversityCurrent audiovisual recording, communication, and playback provides a single, two-dimensional perspectiveof the world as it varies through time. Humans live in a \four-dimensional" world, in which they move about(in 3-D space over time) at their own volition to experience the world from any perspective. Advances insensor, computer, and networking technologies now make possible new systems that employ multiple cam-eras and microphones together with sophisticated processing algorithms to deliver unprecedented immersiverecording and viewing capabilities. Sufficient sensing, networking, and computing power to practically ad-dress this vision already exists; the critical gap in achieving it is the lack of the necessary signal processingtheory and algorithms.This research will develop new signal processing techniques for reconstruction of the audio and visualrecording at an arbitrary location in space and time from multiple acoustic and video sensors, by extendingrecent research in adaptive beamforming, multisensor signal processing of non-stationary signals, and fun-damental new advances in multi-dimensional signal representation. Practical four-dimensional audiovisualrecording, transmission, and playback, or \remote reality", will be demonstrated with low-cost, conven-tional sensors attached to networked computers, thus confirming the practicality of the proposed methodsand applications.