Joint Design of a DS-UWB Modulator and Chaos-Based Spreading Sequences for Sensor Networks

Author

De Michele, Luca Antonio ; Cimatti, Giampaolo ; Rovatti, Riccardo ; Setti, Gianluca

Author_Institution

ARCES, Bologna Univ.

fYear

2007

fDate

27-30 May 2007

Firstpage

1441

Lastpage

1444

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%.

Keywords

modulators; receiving antennas; spread spectrum communication; transmitting antennas; ultra wideband technology; wireless sensor networks; 1.2 V; CMOS UMC130; chaos-based sequence generation; chaos-based spreading sequences; direct sequence ultra wideband modulator; multiple access interference; receiver antennas; schematic design; signal-to-interference ratio; transmitter antennas; wireless-sensor-networks; Antenna measurements; CMOS technology; Chaos; Multiple access interference; Pulse measurements; Receiving antennas; Transmitters; Transmitting antennas; Ultra wideband antennas; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on

Conference_Location

New Orleans, LA

Print_ISBN

1-4244-0920-9

Electronic_ISBN

1-4244-0921-7

Type

conf

DOI

10.1109/ISCAS.2007.378573

Filename

4252920