Adaptive spread-spectrum multicarrier multiple-access over wirelines

Abstract--In this paper, we investigate the dynamic resource allocation adapted to spread-spectrum multicarrier multiple-access (SS-MC-MA) systems in a multiuser power line communication (PLC) context. The developed adaptive system is valid for uplink, downlink, as well as for indoor and outdoor communications. The studied SS-MC-MA system is based on classical multicarrier modulation like digital multitone (DMT), combined with a spread-spectrum (SS) component used to multiplex several information symbols of a given user over the same subcarriers. The multiple-access task is carried out using a frequency-division multiple-access (FDMA) approach so that each user is assigned one or more subcarrier sets. The number of subcarriers in each set is given by the spreading code length as in classical SS-MC-MA systems usually studied in the wireless context. We derive herein a new loading algorithm that dynamically handles the system configuration in order to maximize the data throughput. The al...

• Type: Journal
• Year: 2006
• Where: JSAC
• Authors: Matthieu Crussière, Jean-Yves Baudais, Jean-François Hélard
• Keywords: Classical Multicarrier Modulation, JSAC 2006, Loading Algorithm, Subcarrier