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Cuốn sách này đã kiểm tra và phân tích các khía cạnh hệ thống khác nhau của một hệ thống truyền thông hiện đại dựa trên công nghệ ăng-ten thông minh. Việc phân tích bắt đầu với một bài thuyết trình của các hệ thống thông tin liên lạc hiện tại với sự nhấn mạnh vào những hạn chế và thách thức cần phải được giải quyết để đáp ứng các nhu cầu ngày càng tăng liên tục tốc độ dữ liệu cao và khả năng của kỷ nguyên không dây. Để hiểu rõ hơn về công nghệ ăng-ten thông. | 155 CHAPTER 10 Summary This book examined and analyzed various system aspects of a modern communication system based on smart antenna technology. The analysis began with a presentation of the current communication systems with emphasis on their limitations and challenges that need to be resolved in order to meet the continuous increasing demands of high data rates and capacity of the wireless era. To better understand the smart antenna technology an entire chapter was devoted to the properties of antenna elements and arrays and the classification of antennas according to their radiation characteristics. The major analysis of smart antennas was carried out in the chapters that followed where the functional principles of smart antennas were considered different smart antenna configurations were suggested and the benefits and drawbacks concerning their commercial introduction were stressed. Smart antenna was then examined from the signal processing point of view. In particular the fundamental properties of the direction of arrival were detailed and this information was exploited in a way to design the array to appropriately shape its radiation pattern. The subsequent chapter presented the results of an effort to integrate various aspects of smart antenna systems a project that examined antenna design adaptive beamforming algorithms and their impact on the communication channel BER and network throughput. Afterward the unique advantages of joint space-time processing techniques were reviewed and its origins and applications were demonstrated. The chapter was also concerned with the attractive characteristics of MIMO systems including experimental results a modern technique that exhibits great promise for large data rates and capacities. Lastly commercial efforts on smart antennas were briefly summarized. Temporal processing has reached very high levels and has become mature but by itself is not sufficient. However when combined with space processing it may be in a .
