Performance analysis of spread spectrum modulation in data hiding

2001 ◽  
Author(s):  
Litao Gang ◽  
Ali N. Akansu ◽  
Mahalingam Ramkumar
Keyword(s):  
Performance Analysis ◽  
Data Hiding ◽  
Spread Spectrum ◽  
Spread Spectrum Modulation

Anti-jamming performance analysis of optimal chaotic spread spectrum sequences

2010 ◽  
Vol 30 (10) ◽  
pp. 2843-2845 ◽  
Author(s):  
Shi-biao HE ◽  
Dong-mei LUO ◽  
Cheng GU
Keyword(s):  
Performance Analysis ◽  
Spread Spectrum

scholarly journals Adaptive multimedia data hiding and watermarking

2021 ◽  
Author(s):  
Kan Li
Keyword(s):  
Data Hiding ◽  
Spread Spectrum ◽  
Optimization Algorithms ◽  
Wiener Filter ◽  
Lagrangian Function ◽  
Multimedia Data ◽  
Digital Information ◽  
Look Up Table ◽  
Uniform Quantization ◽  
Adaptive Multimedia

Watermarking is a technique of hiding a message about a work of media within that work itself in· the purpose of protecting the digital information against illegal duplication and manipulation. The objectives of this study are to analyze the robustness and distortion performance of watermarking system and to explore watermarking schemes which balance the robustness-distortion tradeoff optimally. In this thesis, We present a detector algorithm to adaptively extract spread spectrum watermark by filtering the watermarked images with Wiener filter. Two optimization algorithms for quantization watermarking are proposed. First one optimizes uniform quantization based look-up table embedding which minimizes watermarking distortion. Secondly, we analyze the robustness-distortion tradeoff and formulate the robustness-distortion tradeoff into a Lagrangian function. Hence optimal quantizers for watermarking subject to given robustness or fidelity constraint are achieved.

SPREAD SPECTRUM COMMUNICATION VIA CHAOS

1999 ◽  
Vol 09 (01) ◽  
pp. 155-213 ◽  
Author(s):  
MAKOTO ITOH
Keyword(s):  
Performance Analysis ◽  
Computer Simulations ◽  
Spread Spectrum ◽  
Binary Data ◽  
Spread Spectrum Communication ◽  
And Performance

A new scheme is proposed for spread spectrum communication which transmits both analog and binary data via chaotic carriers. The proposed systems have some standard properties of spread spectrum communication. Some computer simulations and performance analysis are given to examine the validity of this scheme.

Security of spread-spectrum-based data hiding

2007 ◽  
Author(s):  
Luis Pérez-Freire ◽  
Pierre Moulin ◽  
Fernando Pérez-González
Keyword(s):  
Data Hiding ◽  
Spread Spectrum
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