Design of noncoherent receiver for analog spread-spectrum communication based on chaotic masking

Author

Murali, Krishnamurthy ; Leung, Henry ; Yu, Haiyang

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Calgary, Alta., Canada

Volume

50

Issue

3

fYear

2003

fDate

3/1/2003 12:00:00 AM

Firstpage

432

Lastpage

441

Abstract

A novel noncoherent receiver for chaotic masking (CM) is proposed for analog spread-spectrum (SS) communication. By exploiting the ergodic property of a chaotic signal, the proposed demodulator can recover information signal from the CM signal effectively. The communication performances of different information signals transmitted through this analog CM modulation SS system are investigated in terms of mean-square error. It is found that the proposed CM scheme is effective even in a very noisy additive white Gaussian channel. In addition, this new scheme has the potential advantage of a very simple hardware realization and it does not require the complicated synchronization process as in the conventional synchronization of chaos-based SS systems.

Keywords

AWGN channels; chaos generators; chaotic communication; demodulators; mean square error methods; spread spectrum communication; additive white Gaussian channel; analog spread-spectrum communication; chaotic masking; demodulator; ergodic property; mean-square error; noncoherent receiver; synchronization process; Additive white noise; Chaotic communication; Circuit noise; Demodulation; Digital modulation; Gaussian channels; Gaussian noise; Hardware; Signal to noise ratio; Spread spectrum communication;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/TCSI.2003.808905

Filename

1193024