Asymmetrical Modulation for Uplink Communication in Cooperative Networks
Source: Aalborg University
In this paper a spectrum efficient uplink communication method for cooperative wireless networks is presented. In Cellular Controlled Peer-To-Peer (CCP2P) cooperative wireless networks the mobile device is logically connected over cellular links with the base station and simultaneously over short-range links with neighboring mobile devices to form cooperative clusters. So far the physical communication over cellular links and over short-range links are separated in time or in frequency. Beyond this state of the art, the authors exploit a method, referred to as asymmetrical modulation, where a mobile device is generating signals that are conveyed towards the base station and the neighboring devices in the same frequency and even at the same time.