NeTS-NEDG: Adaptive Wideband Networks for the Multimedia Home

用户希望在家中共享高清晰度音频和视频，这推动了对不断增长的无线带宽的需求。带宽从数百MHz到许多GHz的宽带无线电可以提供解决方案。近年来，在设计和实现用于单一链路的宽带无线电收发机方面做了大量工作。然而，这还不够；要使宽带技术变得实用，我们需要一条宽带链路与它共享频谱的窄带技术(例如，802.11 a/b/g和WiMax)共存，并在其他宽带链路产生成功的宽带网络的情况下有效地运行。本项目提出了一种为在未经许可的频谱中运行的宽带无线电设计的频率自适应宽带网络。FOWN允许宽带收发器与工作在相同频率的窄带设备共存，同时形成自己的网络。Fwn还利用了频率分集，引入了新的授权算法和频率感知的MAC协议。我们将在宽带无线电硬件中实现FAWN，并在宽带节点和窄带干扰的试验台上对我们的设计进行评估。这项研究的智力优势包括设计和构建第一个与未知窄带设备安全共存的宽带网络体系结构。这项工作还具有重要的更广泛的影响，因为它使富媒体无线家庭成为无线行业非常感兴趣的项目，并与一项涉及研究生和本科生的教育计划紧密结合，特别强调妇女和代表性不足的群体。

Users' desires to share high definition audio and video around the home are driving the need for ever-increasing wireless bandwidth. Wideband radios, whose bandwidth spans hundreds of MHz to many GHz, can provide the solution. Recent years have shown significant work on the design and implementation of wideband radio transceivers that function for a single link. However, this is not enough; for wideband technologies to become practical, we need a wideband link to coexist with narrowband technologies with which it shares the spectrum (e.g., 802.11 a/b/g and WiMax), as well as operate efficiently in the presence of other wideband links producing successful wideband networks.This project presents FAWN, a Frequency Adaptive Wideband Network designed for wideband radios operating in the unlicensed spectrum. FAWN allows wideband transceivers to coexist with narrowband devices operating in the same frequencies, while forming a network of their own. FAWN also exploits frequency diversity, introducing novel autorate algorithms and MAC protocols that are frequency-aware. We will implement FAWN in wideband radio hardware and evaluate our design in a testbed of wideband nodes and narrowband interferers.The intellectual merit of this research involves designing and building the first system architecture for wideband networks that coexist safely with unknown narrowband devices. The work also has an important broader impact because it enables the rich-media wireless home which is of great interest to the wireless industry, and is closely integrated with an educational plan that involves both graduate and undergraduate students, with special emphasize on women and underrepresented groups.