In the digital world, the need to protect communications increases every day. While traditional digital encryption methods are useful, there are many other options for hiding your information. "Information Hiding in Speech Signals for Secure Communication" provides a number of methods to hide secret speech information using a variety of digital speech coding standards. Professor Zhijun Wu has conducted years of research in the field of speech information hiding, and brings his state-of-the-art techniques to readers of this book, including a mathematical model for information hiding, the core concepts of secure speech communication, the ABS-based information hiding algorithm, and much more.

This book shows how to implement a secure speech communication system, including applications to various network security states. Readers will find information hiding algorithms and techniques (embedding and extracting) that are capable of withstanding the advanced forms of attack. The book presents concepts and applications for all of the most widely used speech coding standards, including G.711, G.721, G.728, G.729 and GSM, along with corresponding hiding and extraction algorithms. Readers will also learn how to use a speech covert communication system over an IP network as well as a speech secure communication system applied in PSTN.
Presents information hiding theory and the mathematical model used for information hiding in speech.Provides a number of methods to hide secret speech information using the most common digital speech coding standards.A combination of practice and theory enables programmers and system designers not only to implement tried and true encryption procedures, but also to consider probable future developments in their designs.

Addresses the Challenges of Modern-Day Air Traffic Air traffic control (ATC) directs aircraft in the sky and on the ground to safety, while the Aeronautical Telecommunications Network (ATN) comprises all systems and phases that assist in aircraft departure and landing. The Aeronautical Telecommunications Network: Advances, Challenges, and Modeling focuses on the development of ATN and examines the role of the various systems that link aircraft with the ground. The book places special emphasis on ATC-introducing the modern ATC system from the perspective of the user and the developer-and provides a thorough understanding of the operating mechanism of the ATC system. It discusses the evolution of ATC, explaining its structure and how it works; includes design examples; and describes all subsystems of the ATC system. In addition, the book covers relevant tools, techniques, protocols, and architectures in ATN, including MIPv6, air traffic control (ATC), security of air traffic management (ATM), very-high-frequency (VHF) digital link (VDL), aeronautical radio and satellite communications, electromagnetic interference to aeronautical telecommunications, quality of service (QoS)-satisfied ATN routing mechanism speed dynamic environments, and service-oriented architecture (SOA)-based ATN transmission control algorithm. It also incorporates published research and technical reports to illustrate existing problems, highlight current methods and opportunities, and consider future directions and trends. The authors: Provide an overview of ATN Illustrate the composition of the ATC system Explain how to design an ATC system Reveal how to use an ATC system to control in-flight airplanes Present the results of author research on spatial mitigation Introduce the electromagnetic interference effects and response measures of aviation communications equipment Analyze the protective measures of aircraft and ground stations against electromagnetic interference The Aeronautical Telecommunications Network: Advances, Challenges, and Modeling highlights the advances, challenges, and modeling of ATN, and implements strategies for integrating existing and future data communications networks into a single internetwork serving the aeronautical industry. This book can aid readers in working to ensure the effective management of air traffic and airspace, and the safety of air transport.

Addresses the Challenges of Modern-Day Air Traffic Air traffic control (ATC) directs aircraft in the sky and on the ground to safety, while the Aeronautical Telecommunications Network (ATN) comprises all systems and phases that assist in aircraft departure and landing. The Aeronautical Telecommunications Network: Advances, Challenges, and Modeling focuses on the development of ATN and examines the role of the various systems that link aircraft with the ground. The book places special emphasis on ATC-introducing the modern ATC system from the perspective of the user and the developer-and provides a thorough understanding of the operating mechanism of the ATC system. It discusses the evolution of ATC, explaining its structure and how it works; includes design examples; and describes all subsystems of the ATC system. In addition, the book covers relevant tools, techniques, protocols, and architectures in ATN, including MIPv6, air traffic control (ATC), security of air traffic management (ATM), very-high-frequency (VHF) digital link (VDL), aeronautical radio and satellite communications, electromagnetic interference to aeronautical telecommunications, quality of service (QoS)-satisfied ATN routing mechanism speed dynamic environments, and service-oriented architecture (SOA)-based ATN transmission control algorithm. It also incorporates published research and technical reports to illustrate existing problems, highlight current methods and opportunities, and consider future directions and trends. The authors: Provide an overview of ATN Illustrate the composition of the ATC system Explain how to design an ATC system Reveal how to use an ATC system to control in-flight airplanes Present the results of author research on spatial mitigation Introduce the electromagnetic interference effects and response measures of aviation communications equipment Analyze the protective measures of aircraft and ground stations against electromagnetic interference The Aeronautical Telecommunications Network: Advances, Challenges, and Modeling highlights the advances, challenges, and modeling of ATN, and implements strategies for integrating existing and future data communications networks into a single internetwork serving the aeronautical industry. This book can aid readers in working to ensure the effective management of air traffic and airspace, and the safety of air transport.