SBIR Phase II: Dynamic Broadband Wireless Networks

这个小企业创新研究（SBIR）第二阶段项目将演示自适应天线系统的能力？一种带有天线的无线电，它可以改变辐射模式，在需要的地方提供覆盖范围？to automatically自动optimizecoverage优化.恶劣的射频环境，例如那些具有移动反射表面的环境，如集装箱堆场，即使只有一台无线电，也很难建立可靠的通信。当几个无线电必须一起工作，以提供覆盖在一个扩展的区域，这是非常困难和耗时的手工定制的辐射模式的每个天线，使每一个部分的区域receivesadequate信号和无线电不相互干扰。通过结合创新的模式计算算法和主动传感器反馈，该项目产生的系统将自动调整覆盖范围以满足这些目标。该计划不仅能够建立一个区域的初始覆盖，还将持续监控覆盖质量，并自动调整可能影响覆盖质量的天气或环境变化。该项目更广泛的影响/商业潜力是降低部署成本和大幅提高可靠性。在短期内，该系统将建立一个WiFi平台，用于海运港口市场，作为一个更可靠的通信系统来运行他们的使命关键调度应用程序。部署成本的节省不仅来自更快、更可靠的初始设置，还来自随着环境因素的变化而自动调整覆盖范围。including包括such这样radical激进changes变化as the failure故障of one radio无线电.由于该系统不知道无线电使用的频率和协议，因此它不限于WiFi部署。该项目将通过创建和操作自适应天线系统的原型WiMAX版本来证明这一点。从长远来看，这种自适应天线技术为任何大规模无线电部署提供了显著的好处。例如，随着供应商推出下一代蜂窝网络，蜂窝大小将显著缩小，这将大大增加部署成本。自适应天线系统不仅可以降低这些成本，还可以为这些下一代系统增加连接可靠性。

This Small Business Innovation Research (SBIR) Phase II project will demonstratethe ability of an adaptive antenna system ? a radio with an antenna that changes itsradiation pattern to provide coverage where it is needed ? to automatically optimizecoverage. Harsh RF environments, for example those with shifting reflective surfacessuch as shipping container yards, make it hard to set up reliable communication evenwhen there is only one radio. When several radios must work together to providecoverage in an extended area, it is extremely difficult and time-consuming to manuallytailor the radiation pattern of each antenna so that every portion of the area receivesadequate signal and the radios do not interfere with each other. Through a combination ofinnovative pattern computation algorithms and active sensor feedback, the systemresulting from this project will automatically tailor coverage to meet these goals. Thesystem will not just be able to set up the initial coverage of an area, it will alsocontinually monitor the quality of the coverage and automatically adjust to changes in thesystem or the environment that may affect the quality of that coverage.The broader impact/commercial potential of this project is decreased deploymentcosts and substantially increased reliability. In the short run, the system will be built witha WiFi platform for use in the maritime ports market as a more reliable communicationsystem to run their mission critical scheduling application. The deployment savings resultfrom not only a quicker and more reliable initial setup but also from automatedadjustments to coverage as environmental factors change ? including such radicalchanges as the failure of one radio. Because the system is agnostic to the frequency andthe protocol used by the radio, it is not limited to WiFi deployments. The project willdemonstrate this by creating and operating a prototype WiMAX version of the adaptiveantenna system. In the long term, this adaptive antenna technology offers significantbenefits to any large scale radio deployment. For example, as providers roll out the nextgeneration of cellular, cell sizes will shrink significantly which will substantially increasethe deployment cost. An adaptive antenna system offers not only the promise of reducingthese costs but also adding increased connection reliability to these next generationsystems.