tailieunhanh - Fundamentals of Wireless Communication

Past decade has seen a surge of research activities in the field of wireless communication. Emerging from this research thrust are new points of view on how to communicate effectively over wireless channels. The goal of this course is to study in a unified way the fundamentals as well as the new research developments. | Fundamentals of Wireless Communication David Tse 1. Introduction Course Objective Past decade has seen a surge of research activities in the field of wireless communication. Emerging from this research thrust are new points of view on how to communicate effectively over wireless channels. The goal of this course is to study in a unified way the fundamentals as well as the new research developments. The concepts are illustrated using examples from several modern wireless systems (GSM, IS-95, CDMA 2000 1x EV-DO, Flarion's Flash OFDM, ArrayComm systems.) System Implementation Capacity limits and communication techniques Channel modelling Course Outline Part I: Basics 2. The Wireless Channel Diversity 4. Multiple Access and Interference Management 5. Capacity of Wireless Channels Course Outline (2) Part II: Modern Wireless Communication 6. Opportunistic Communication and Multiuser Diversity 7. MIMO I: Spatial Multiplexing and Channel Modeling 8. MIMO II: Capacity and . | Fundamentals of Wireless Communication David Tse 1. Introduction Course Objective Past decade has seen a surge of research activities in the field of wireless communication. Emerging from this research thrust are new points of view on how to communicate effectively over wireless channels. The goal of this course is to study in a unified way the fundamentals as well as the new research developments. The concepts are illustrated using examples from several modern wireless systems (GSM, IS-95, CDMA 2000 1x EV-DO, Flarion's Flash OFDM, ArrayComm systems.) System Implementation Capacity limits and communication techniques Channel modelling Course Outline Part I: Basics 2. The Wireless Channel Diversity 4. Multiple Access and Interference Management 5. Capacity of Wireless Channels Course Outline (2) Part II: Modern Wireless Communication 6. Opportunistic Communication and Multiuser Diversity 7. MIMO I: Spatial Multiplexing and Channel Modeling 8. MIMO II: Capacity and Multiplexing Architectures 9. MIMO III: Diversity-Multiplexing Tradeoff Assumed background: Basic signals and systems, linear algebra and proabability. Basic digital communications. This course only gives an overview of the ideas. Full details can be found in: 2. The Wireless Channel Wireless Mulipath Channel Channel varies at two spatial scales: large scale fading small scale fading Large-scale fading In free space, received power attenuates like 1/r2. With reflections and obstructions, can attenuate even more rapidly with distance. Detailed modelling complicated. Time constants associated with variations are very long as the mobile moves, many seconds or minutes. More important for cell site planning, less for communication system design. Small-scale multipath fading Wireless communication typically happens at very high carrier frequency. (eg. fc = 900 MHz or GHz for cellular) Multipath fading due to constructive and .

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