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The aim of this book is to provide some useful methods to improve the spectrum sensing performance in a systematic way, and point out an effective method for the application of cognitive radio technology in wireless communications. The book gives a a state-of-the-art survey and proposes some new cooperative spectrum sensing (CSS) methods attempting to achieve better performance. For each CSS, the main idea and corresponding algorithm design are elaborated in detail. This book covers the fundamental concepts and the core technologies of CSS, especially its latest developments. Each chapter...

The field of Intelligent Systems and Applications has expanded enormously during the last two decades. Theoretical and practical results in this area are growing rapidly due to many successful applications and new theories derived from many diverse problems. This book is dedicated to the Intelligent Systems and Applications in many different aspects. In particular, this book is to provide highlights of the current research in Intelligent Systems and Applications. It consists of research papers in the following specific topics:

l Authentication, Identification, and...

This research book presents a sample of recent advances in information hiding techniques and their applications. It includes:

Image data hiding scheme based on vector quantization and image graph coloring

The copyright protection system for Android platform

Reversible data hiding

ICA-based image and video watermarking

Content-based invariant image watermarking

Single bitmap block truncation coding of color images using cat swarm optimization

Genetic-based wavelet packet watermarking for copyright protection

Lossless text...

Information hiding is an area of great interest due to its applications in copyright protection of images, data, passport control, CDs, DVDs, videos and so on. This book presents a sample of recent research results from key researchers. The contributions include: - Copyright protection system; - Video watermarking; - Restoring objects for digital inpainting; - Data embedding scheme; - Robust image watermarking; - Perceptual shaping in digital watermarking; - Image authentication method under JPEG; - Fingerprinting for copyright protection; - Data hiding for halftone images; - Information...