An Intelligent Interference-Aware Wireless Network

快速部署无线网络，为宽带互联网接入、安全监控和医疗保健提供服务。这些网络为用户提供了移动性和灵活性，无论他们在哪里都可以接受服务。然而，过度拥挤的网络会造成相互干扰，降低网络性能，导致下载速度较慢、用户与网络断开连接以及传输数据出错，避免干扰的方法之一是允许网络在较不拥挤的频段上运行，方法是在部署之前或之后手动配置网络。然而，由于环境复杂，干扰信号也来自其他来源，手动配置需要特殊的技能，有时不适用。因此，对智能干扰感知网络提出了很高的要求，使网络能够根据环境的变化进行重新配置。本项目的目标就是开发这样一个智能网络。为了实现网络的智能化，第一步是感知环境信号，以找出干扰来自哪里，以及网络可以在哪个频段上运行。该项目将开发一种基于压缩感知的先进频谱感知技术，通过以低于奈奎斯特速率的采样来感知宽带信号。这将减少要处理的数据量，从而降低能源消耗。第二步是利用软件无线电技术对网络进行重构。当需要新的数据传输方法时，可以从专用服务器下载新的软件。他们的步骤是开发一个分布式软件下载和管理系统，以便在必要时更新软件。通过这三项技术，发展起来的网络将是可持续和无干扰的。这在医疗保健和军事等数据敏感应用中非常有用。

Wireless networks are deployed at a fast pace to provide services for broadband Internet access, security surveillance, and healthcare. These networks give users the mobility and flexibility to receive services wherever they are. However, the over-crowded networks cause interference to each other that degrades the performance of the network, leading to slower download speed, disconnecting the users from the networks, and errors in transmitted data.One method to avoid the interference is to allow the network to operate on less crowded frequency band by manually configuring the network before or after the deployment. However, the manual configuration needs special skills and sometimes is not applicable because of complex environment where interference signals are from other resources too. Therefore an intelligent interference-aware network is highly demanded where the network can reconfigure itself adaptive to the environmental change.The objective of this project is to develop such an intelligent network. To enable the intelligence of the network, the first step is to sense the environmental signals to find out where the interference is from and which frequency bank the network can operate on. This project will develop an advanced spectrum sensing technology based on compressed sensing, which can sense the wideband signals by acquiring the samples at a less than Nyquist rate. This will reduce the data to be processed, and thus reduce the consumption of the energy. The second step is the reconfiguration of the network by software defined radio technology. When new data transmission method is required, new software could be downloaded from a dedicated server. The their step is to develop a distributed software downloading and management system to update the software when necessary. By these three technologies, the developed network will be sustainable and interference free. This is very useful in data sensitive applications, such as healthcare and military.