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It has been shown that complete complementary codes can be applied into some communication systems like approximately synchronized CDMA systems because of its good correlation properties. CT-CDMA is one of the communication systems based on complete complementary codes. In this system, the information data of the multiple users can be transmitted by using the same set of complementary codes through a single frequency band. In this paper, the authors propose to apply CT-CDMA systems into a kind of steganography. It is shown that a large amount of secret data can be embedded in the stego image by the proposed method through some numerical experiments using color images.
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