A chaos-based sequence generation method for reducing multiple access interference (MAI) in direct sequence UWB wireless-sensor-networks (WSNs) is presented, along with the schematic design in CMOS UMC130 1.2V technology of a modulator scheme, that takes into account both the transmitter and receiver antennas. Chaos-based spreading is numerically optimized to combine with the pulse profile (as obtained by extensive simulations) and maximizing the bit-rate (BR) at which each user may transmit given a certain link quality, measured as the signal-to-interference ratio (SIR); when compared with traditional random sequences, the BR increase is up to 30%.
L. De Michele, G. cimatti, R. Rovatti, G. Setti (2007). Joint Design of a DS-UWB Modulator and Chaos-Based Spreading Sequences for Sensor Networks. s.l : s.n.
Joint Design of a DS-UWB Modulator and Chaos-Based Spreading Sequences for Sensor Networks
DE MICHELE, LUCA ANTONIO;CIMATTI, GIAMPAOLO;ROVATTI, RICCARDO;
2007
Abstract
A chaos-based sequence generation method for reducing multiple access interference (MAI) in direct sequence UWB wireless-sensor-networks (WSNs) is presented, along with the schematic design in CMOS UMC130 1.2V technology of a modulator scheme, that takes into account both the transmitter and receiver antennas. Chaos-based spreading is numerically optimized to combine with the pulse profile (as obtained by extensive simulations) and maximizing the bit-rate (BR) at which each user may transmit given a certain link quality, measured as the signal-to-interference ratio (SIR); when compared with traditional random sequences, the BR increase is up to 30%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
