Bit Error Rates of Information and Watermark Bits in Digital Watermarking Systems Based on SS Techniques
Yutaka Jitsumatsu, Yosuke Hattori, Tahir Abbas Khan, Tohru Kohda · International Symposium on Spread Spectrum Techniques and Applications · 2004
In spread spectrum (SS)-based digital watermark- ing systems, watermark information is spread by a pseudo- random 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. †