Fundamentals of Wireless Communication 无线通信基础 英文版

书名： 无线通信基础 原书名： Fundamentals of Wireless Communication 原出版社： Cambridge University Press 分类： 电子电气 >> 通信 作者： David Tse, Pramod Viswanath Contents 1 Introduction 12 1.1 Book Objective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1.2 Wireless Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 1.3 Book Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2 The Wireless Channel 21 2.1 Physical Modeling for Wireless Channels . . . . . . . . . . . . . . . . . 21 2.1.1 Free space, fixed transmitting and receive antennas . . . . . . . 23 2.1.2 Free space, moving antenna . . . . . . . . . . . . . . . . . . . . 24 2.1.3 Reflecting wall, fixed antenna . . . . . . . . . . . . . . . . . . . 25 2.1.4 Reflecting wall, moving antenna . . . . . . . . . . . . . . . . . . 27 2.1.5 Reflection from a Ground Plane . . . . . . . . . . . . . . . . . . 29 2.1.6 Power Decay with Distance and Shadowing . . . . . . . . . . . . 30 2.1.7 Moving Antenna, Multiple Reflectors . . . . . . . . . . . . . . . 31 2.2 Input/Output Model of the Wireless Channel . . . . . . . . . . . . . . 32 2.2.1 The Wireless Channel as a Linear Time-Varying System . . . . 32 2.2.2 Baseband Equivalent Model . . . . . . . . . . . . . . . . . . . . 34 2.2.3 A Discrete Time Baseband Model . . . . . . . . . . . . . . . . . 37 Discussion 2.1 Degrees of Freedom . . . . . . . . . . . . . . . 40 2.2.4 Additive White Noise . . . . . . . . . . . . . . . . . . . . . . . . 41 2.3 Time and Frequency Coherence . . . . . . . . . . . . . . . . . . . . . . 42 2.3.1 Doppler Spread and Coherence Time . . . . . . . . . . . . . . . 42 2.3.2 Delay Spread and Coherence Bandwidth . . . . . . . . . . . . . 44 2.4 Statistical Channel Models . . . . . . . . . . . . . . . . . . . . . . . . . 47 2.4.1 Modeling Philosophy . . . . . . . . . . . . . . . . . . . . . . . . 47 2.4.2 Rayleigh and Rician Fading . . . . . . . . . . . . . . . . . . . . 48 2.4.3 Tap Gain Autocorrelation Function