Pre-modulation physical layer steganography
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United States of America Patent
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Issued Date -
Apr 25, 2013
app pub date -
Oct 3, 2012
filing date -
Oct 3, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for physical layer steganography communications is provided by combining an encoded cover data stream with a hidden data stream to create stego data stream. The cover and hidden data streams can be combined by determining an insertion rate, and determining, for each bit of the hidden data stream, whether to change an associated bit in the cover data stream. The bit of the cover data stream is changed to match the hidden data stream when the two bits are different. Otherwise, the cover data stream bit stays the same. The stego data stream can then be modulated and transmitted to a receiver. At the receiver, the stego data stream can be split to extract the hidden data stream, and the cover data stream can be decoded.
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