Spread spectrum communications handbook (revised ed.)
Spread spectrum communications handbook (revised ed.)
Digital Watermarking and Steganography
Digital Watermarking and Steganography
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The paper presents the results of implementation in the Matlab environment for watermarking embedder and extractor based on the Direct Sequence Spread Spectrum (DSSS). A block diagram of watermarking system, an analysis of watermarked signal reproduced as well as watermarking system robustness to degrading factors: lossy compression, signal-to-noise ratio (SNR) as well as a change in sampling frequency, were shown.