SBIR Phase I: Development of Applique Propagation Measurement Circuits for Enhanced Non-Line-of-Sight Broadband Wireless

这个小企业创新研究（SBIR）第一阶段项目提出了导致嵌入式传播测量电路的发展，将作为一个贴花与宽带无线网络结合使用。它基于这样的原理，即最好了解信号强度、路径失真等，非视距传输通道的时间提前，而不是把查询到数据包。当前的系统通过冗余传输、重复请求、过大的发射功率或通过对有用的操作范围施加限制来过度补偿这种预知的缺乏。研究将强调权衡研究和分析的性能，以优化算法，使其在最高可能的信道压力水平下工作，包括但不限于最低信噪比、最高多普勒速率、最差多径、最长距离和最高冗余天线数量。无线非视距技术，如多输入多输出（MIMO），智能天线，涡轮编码和分集组合，将有利于设备供应商，因为现在他们将能够重用其大多数内部调制解调器设计，并仍然利用这种产品的贴花性质。该技术将使以下用户群体受益：1）农村社区，2）消防和救援，警察，救护车服务和机场安全等第一响应群体，3）需要移动性，户外工作的群体工作人员，以及4）远距离密切合作通信，如农业，海上贸易，林业，石油钻井，公用事业运营，建筑和军事人员。

This Small Business Innovation Research (SBIR) Phase I project proposes to lead to development of embedded propagation measurement circuits that will be used as an applique in conjunction with broadband wireless networks. It is predicated on the principle that it is better to learn about signal strength, path distortion, etc., of non-line-of-sight transmission channels ahead of time rather than placing queries into data packets. Current systems over-compensates for this lack of foreknowledge through redundant transmissions, repeat requests, oversizing transmit power, or by placing limitations on useful range of operations. Research will emphasize performance of trade studies and analyses to optimize algorithms so that they work to the highest possible levels of channel stress including, but not limited to lowest signal-to-noise ratio, highest rates of Doppler, worst multipath, longest range, and highest number of redundancy antennas. Wireless non-line-of-sight techniques such as multiple input multiple output (MIMO), smart antennas, turbo coding, and diversity combining, will benefit equipment suppliers because now they will be able to reuse most of their internal modem designs and still take advantage of the applique nature of this product. This technology will benefit the following groups of users: 1) rural communities, 2) first response groups such as Fire and Rescue, Police, Ambulance services, and Airport Security, 3) people working in groups that require mobility, outdoor work, and 4) close cooperative communications over large distances such as Agriculture, Maritime Trades, Forestry, Oil Drilling, Utilities Operations, Construction and Military personnel.