Multi-user Signals Combined with Quadratic Residue Code for Monitoring System

Quadratic residue code (QR code) was designed to carry significantly more data than its ID counterpart. These codes are general used in industrial information tagging applications where database high data capacity, mobility, and data robustness are required. In this paper, we have developed the amplitude-lock loop (ALL) separation model combined with application of quadratic residue code. The separated multi-user signal information embedded in QR code through QR code generation. Then, we can decode to obtain the information of multi-user signals by mobile device with camera. The mobile device must embed to decode the middleware for QR code. The multi-user signals combined with quadratic residue code for monitoring system, which includes five functions. The system composed of FM model, PLL model, ALL model, QR code generation and mobile device. We adopted the MATLAB/Simulink to simulate this system then reached the purpose of monitor.

[1]  Tom J. Moir,et al.  Analysis of an amplitude-locked loop , 1995 .

[2]  Tom J. Moir,et al.  Improvement of FM demodulator with cochannel FM interference , 1999 .

[3]  Xuemin Chen,et al.  No binary quadratic residue code of length 8m-1 is quasi-perfect , 1994, IEEE Trans. Inf. Theory.

[4]  Hiroshi Hanaizumi,et al.  Barcode readers using the camera device in mobile phones , 2004, 2004 International Conference on Cyberworlds.

[5]  G. J. Jong,et al.  The autocorrelation function of the cochannel FM interference using the amplitude-locked loop , 2003, IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468).

[6]  G. J. Jong,et al.  The noise elimination system using the amplitude-locked loop with cochannel FM interference , 2002, 6th International Conference on Signal Processing, 2002..

[7]  Ming-Syan Chen,et al.  A General Scheme for Extracting QR Code from a Non-uniform Background in Camera Phones and Applications , 2007, Ninth IEEE International Symposium on Multimedia (ISM 2007).

[8]  Keisoku Jido Seigyo Gakkai Staff.  IECON '98: Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society Aachen, Germany, August 31-September 4, 1998 / , 1998 .

[9]  Gwo-Jia Jong,et al.  The performance of the amplitude-locked loop with cochannel interference , 1998, IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200).