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Bit error rate in digital watermarking systems using spread spectrum techniques

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4 Author(s)
Jitsumatsu, Y. ; Kyushu Univ., Fukuoka, Japan ; Hattori, Y. ; Khan, T.A. ; Kohda, T.

In spread spectrum (SS)-based digital watermarking systems, watermark information is spread by a pseudorandom code and added to the original information signal. On the other hand, we have proposed another watermarking system having one watermark channel and several image transmission channels. Information data is modulated by SS codes with variable code length according to its significance. This paper inspects bit error rate of such a watermarking system for both watermark channel and image transmission channels.

Published in:

Spread Spectrum Techniques and Applications, 2004 IEEE Eighth International Symposium on

Date of Conference:

30 Aug.-2 Sept. 2004