دانلود کتاب اصول، فناوری و کاربردهای وای‌فای ۷ (Wi-Fi 7)

In the ubiquitous Internet era nowadays, Wi-Fi is the most successful indoor wireless connectivity technology. Given its extensive commercialization, it is common for many to perceive Wi-Fi technology as having reached its peak maturity. Even professionals within the communications and computer industries may assume that there is little untapped potential left in Wi-Fi technology. The reality is that Wi-Fi technology has been evolving at a steady pace, nearly twice as fast as mobile communication, with each new generation of Wi-Fi technol- ogy significantly uplifting user experiences. Since the introduction of the first Wi-Fi standard in 1997, new standards have emerged approximately every four to five years, each bringing significant improvements in physical data rates. Starting from an initial speed of 2 Mbps, these rates have progressively increased to 54 Mbps, then to 600 Mbps, and now surpass 30 Gbps with the latest Wi-Fi 7 standard. In offices, Wi-Fi has become an essential infrastructure, and at home, it has become as indispensable as water, electricity, and gas for people’s daily lives. According to a Wi-Fi Alliance report, the global economic value of Wi-Fi was estimated at $3.3 trillion in 2021 and is expected to grow to $4.9 trillion by 2025. This growth is driven by the increasing demand for data-intensive real-time appli- cations, the digital transformation of enterprise communication, and the availability of new 6 GHz spectrum, which has been authorized by many countries and regions. After more than two decades of technological development and standard evolution, Wi-Fi has become one of the economic engines of the digital economy today. The newest Wi-Fi standard, defined by the IEEE as 802.11be and branded Wi-Fi 7 by the Wi-Fi Alliance, represents the next generation of wireless connectivity. Prior to it, Wi-Fi 6 was widely adopted by telecom operators, router manufacturers, and smart device makers soon after the Wi-Fi Alliance established the certification testing standard in 2019. As the next generation of Wi-Fi technology, Wi-Fi 7 aims to deliver ultra-high bandwidth and ultra-high performance, with more technological innovations and breakthroughs. The theoretical rate of Wi-Fi 7 exceeds 30 Gbps, more than three times that of Wi-Fi 6, and also exceeds the peak rate of 5G mobile communication. The latest Wi-Fi 7 specification has recently been ratified by the IEEE. The new handsets have been equipped with the Wi-Fi 7 technology, and millions of devices with the upgraded Wi-Fi capability are expected to hit the market, similar to the trend seen with every predecessor Wi-Fi standards release. Uncontroversially, Wi-Fi 7 will dominate short-range communication in home networks, enterprise wireless offices, and public Wi-Fi applications in the next years before Wi-Fi 8 takes over. Its ultra-high performance will facilitate various high-bandwidth latency-sensitive ser- vices, such as ultra-high definition video, online gaming, and virtual reality. There are few books on the market about the principles and design practices of Wi-Fi product development. This book fills that gap, serving as a comprehensive professional resource across industries regarding Wi-Fi 7 key technologies, Wi-Fi 7 product development, and Wi-Fi 7 business applications, such as the integration of new Wi-Fi technology with 5G mobile networks, etc. This book also helps those interested in Wi-Fi technology to understand the technical concepts and principles behind remote learning, home entertainment, and other life experiences. This book is divided into two main parts. The first part starts with the basic concepts and principles of Wi-Fi technology and then delves into the key technologies and standard changes that Wi-Fi 6 and Wi-Fi 7 bring, respectively, providing readers an in-depth understanding of various aspects of Wi-Fi 7. The second part discusses product development and testing methods based on Wi-Fi 7, explores utilizing Wi-Fi 7 applications in different industry or home scenarios, as well as the convergence of Wi-Fi 7 and 5G mobile technologies. At the end, this book provides a forecast on Wi-Fi technology trends and the changes it will bring to the public in the future. This book features an in-depth introduction to Wi-Fi 7 technology, as well as new product development and the Wi-Fi monetization applications of service providers. The authors are Cheng Gang, Qian Zhihong, Jiang Yiming, Thirumurthy Rajamanickam, while Yang Zhijie is one of the original authors of the Chinese edition, which was published in September 2023. Compared with the Chinese edition, many chapters have undergone extensive revisions, encompassing a metic- ulous refinement of Wi-Fi principles, the incorporation of the newest advancements in Wi-Fi 7 technology, and the adoption of a more systematic and precise approach to illustrate cutting-edge technologies.