Journal
IEEE SIGNAL PROCESSING LETTERS
Volume 24, Issue 7, Pages 1068-1072Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LSP.2017.2710144
Keywords
Channel capacity; constellation dithering (CD); quadrature phase shift keying (QPSK); radio frequency (RF) 21 watermarking
Categories
Ask authors/readers for more resources
Radio frequency (RF) watermarking is the technology that embeds the hidden information in the normal communication signals without extra bandwidth, which could be used to identify authentication or transmit secret information. Constellation dithering (CD) is one of the RF watermarking schemes and usually used for quadrature phase shift keying signals. In this letter, the two available CD watermarking schemes are analyzed by unified theoretical model and then a new CD scheme is proposed based on the model. All the three schemes are investigated to provide the bit-error-rate formulas for the carrier symbols and watermark bits, and the watermark channel capacities have been presented for the three schemes. The numerical analysis shows that the proposed scheme has the largest watermark channel capacity in the same inaudibility constraint.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available