Title :
Analysis and CMOS implementation of a chaos-based communication system
Author :
Mandal, Soumyajit ; Banerjee, Soumitro
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Massachusetts Inst. of Technol., Cambridge, MA, USA
Abstract :
We describe the design and CMOS implementation of a baseband spread-spectrum communication system using chaotic signals for spreading digital data. The communication system uses a new chaotic modulation scheme called modified differential chaos shift keying (M-DCSK). The M-DCSK scheme and its characteristics are analyzed for single user and multi user applications. The chaotic signals were generated using a simple and robust circuit. The dynamics of this chaos generating circuit are also studied. The spectral properties of the system are investigated and compared with theoretical expectations.
Keywords :
CMOS integrated circuits; chaos generators; chaotic communication; differential phase shift keying; frequency shift keying; spread spectrum communication; CMOS implementation; baseband spread-spectrum communication system; chaos generating circuit; chaos-based communication system; chaotic modulation scheme; chaotic signals; digital data; modified differential chaos shift keying; multiple access; multiuser application; single user application; Baseband; Chaotic communication; Communication systems; Frequency modulation; Integrated circuit technology; Robustness; Signal design; Signal generators; Spread spectrum communication; Very large scale integration; CMOS; Chaos; DCSK; M-DCSK; communication; differential chaos shift keying; modified DCSK; multiple access; spectrum;
Journal_Title :
Circuits and Systems I: Regular Papers, IEEE Transactions on
DOI :
10.1109/TCSI.2004.834482
