报告摘要:

Over the last two decades, the OSI model has played a dominant role in the design of wireless networks. Although the layer-model helps to simplify the network design by decomposing a complex task into more tractable blocks, with each of them being assigned to a particular layer, this framework often leads to inefficient use of resources within devices and systems due to lack of cross-layer interaction. As an effective approach to improve both spectral and power efficiency, recently, cross-layer optimization has attracted considerable research attention. In this presentation, focusing on a physical layer (PHY) enabled by advanced signal processing techniques, we will discuss cross-layer wireless network design from the following aspects: (i) PHY-aware medium access control; (ii) Source-aware non-uniform information transmission for minimum distortion; (iii) Joint PHY layer and network layer information confidentiality. Advantages of cross-layer design are demonstrated through both theoretical analysis and simulation examples.