NeTS: Medium: Collaborative Research: Cooperative Beamforming for Efficient and Secure Wireless Communication

NeTS：媒介：协作研究：用于高效、安全无线通信的协作波束成形

• 批准号: 0905513
• 负责人: Tracy Camp
• 金额: $ 15万
• 依托单位: Colorado School of Mines
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0905513&HistoricalAwards=false
• 关键词: NeTS; Medium; Collaborative; Research; Cooperative

"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."There is a growing need for wireless networks that can sustain high data rates, are robust to interference, make efficient use of battery resources, and offer secure communications. This project introduces cooperative beamforming (CB), a novel technique that enables high throughput and power efficient communications in a secure manner. CB consists of two stages. In the first stage, the sources share their data with neighboring nodes via low-power communications. Various approaches for such information sharing are considered, with a goal to minimize queuing delays, conserve energy, and achieve high throughput. In the second stage, the cooperative nodes apply a weight to the signal received during first stage, and transmit. The weights are such that a specific objective criterion (e.g., signal to interference at the destination) is maximized. In CB, although each node uses low power, all nodes together can deliver high power to a faraway destination. This increase in power offsets power reduction due to propagation attenuation. CB can be viewed as an alternative to multihop transmission and, unlike multihop transmission, does not deplete the power resources of other nodes. Since CB can achieve long distance communication, new paths can be found to improve the overall network performance. Also, CB improves network security by avoiding eavesdroppers; unlike traditional cryptographic-based protocols that operate at higher layers and are sensitive to the broadcast nature of the transmission medium, CB improves security at the physical layer. CB will be implemented on a hardware network testbed to demonstrate how the developed techniques can revolutionize wireless communications.

“该奖项是根据2009年的《美国回收与再投资法》（公法111-5）资助的。“越来越需要维持高数据速率的无线网络，对干扰，有效地利用电池资源并提供安全的通信。该项目介绍了合作波束形成（CB），这是一种新颖的技术，可以以安全的方式实现高吞吐量和电力效率的通信。 CB由两个阶段组成。在第一阶段，消息人士通过低功率通信与相邻节点共享数据。考虑了各种信息共享的方法，以最大程度地减少排队延迟，节省能源并实现高通量。在第二阶段，合作节点在第一阶段收到的信号和传输中施加重量。权重使特定的客观标准（例如，在目的地的干扰信号）最大化。在CB中，尽管每个节点都使用低功率，但所有节点都可以将高功率传递到遥远的目的地。由于传播衰减而导致的功率降低的增加。 CB可以看作是多直接传输的替代方法，与多台化传输不同，可以耗尽其他节点的功率资源。由于CB可以实现长距离通信，因此可以找到新的路径来改善整体网络性能。此外，CB通过避免窃听器来改善网络安全性；与传统的基于密码学的协议在较高层上运行并且对传输介质的广播性质敏感不同，CB可以提高物理层的安全性。 CB将在硬件网络测试台上实施，以说明开发技术如何彻底改变无线通信。