Cargando…

Digital Communications

Detalles Bibliográficos
Autor principal: Safak, Mehmet
Formato: Electrónico eBook
Idioma:Inglés
Publicado: Newark : John Wiley & Sons, Incorporated, 2017.
Colección:New York Academy of Sciences Ser.
Temas:
Acceso en línea:Texto completo
Tabla de Contenidos:
  • Intro
  • Title Page
  • Copyright Page
  • Contents
  • Preface
  • List of Abbreviations
  • About the Companion Website
  • Chapter 1 Signal Analysis
  • 1.1 Relationship Between Time and Frequency Characteristics of Signals
  • 1.1.1 Fourier Series
  • 1.1.2 Fourier Transform
  • 1.1.3 Fourier Transform of Periodic Functions
  • 1.2 Power Spectal Density (PSD) and Energy Spectral Density (ESD)
  • 1.2.1 Energy Signals Versus Power Signals
  • 1.2.2 Autocorrelation Function and Spectral Density
  • 1.3 Random Signals
  • 1.3.1 Random Variables
  • 1.3.2 Random Processes
  • 1.4 Signal Transmission Through Linear Systems
  • References
  • Problems
  • Chapter 2 Antennas
  • 2.1 Hertz Dipole
  • 2.1.1 Near- and Far-Field Regions
  • 2.2 Linear Dipole Antenna
  • 2.3 Aperture Antennas
  • 2.4 Isotropic and Omnidirectional Antennas
  • 2.5 Antenna Parameters
  • 2.5.1 Polarization
  • 2.5.2 Radiation Pattern
  • 2.5.3 Directivity and Beamwidth
  • 2.5.4 Gain
  • 2.5.5 Effective Receiving Area
  • 2.5.6 Effective Antenna Height and Polarization Matching
  • 2.5.7 Impedance Matching
  • References
  • Problems
  • Chapter 3 Channel Modeling
  • 3.1 Wave Propagation in Low- and Medium-Frequency Bands (Surface Waves)
  • 3.2 Wave Propagation in the HF Band (Sky Waves)
  • 3.3 Wave Propagation in VHF and UHF Bands
  • 3.3.1 Free-Space Propagation
  • 3.3.2 Line-Of-Sight (LOS) Propagation
  • 3.3.3 Fresnel Zones
  • 3.3.4 Knife-Edge Diffraction
  • 3.3.5 Propagation Over the Earth Surface
  • 3.4 Wave Propagation in SHF and EHF Bands
  • 3.4.1 Atmospheric Absorption Losses
  • 3.4.2 Rain Attenuation
  • 3.5 Tropospheric Refraction
  • 3.5.1 Ducting
  • 3.5.2 Radio Horizon
  • 3.6 Outdoor Path-Loss Models
  • 3.6.1 Hata Model
  • 3.6.2 COST 231 Extension to Hata Model
  • 3.6.3 Erceg Model
  • 3.7 Indoor Propagation Models
  • 3.7.1 Site-General Indoor Path Loss Models
  • 3.7.2 Signal Penetration Into Buildings
  • 3.8 Propagation in Vegetation
  • References
  • Problems
  • Chapter 4 Receiver System Noise
  • 4.1 Thermal Noise
  • 4.2 Equivalent Noise Temperature
  • 4.2.1 Equivalent Noise Temperature of Cascaded Subsystems
  • 4.3 Noise Figure
  • 4.3.1 Noise Figure of a Lossy Device
  • 4.4 External Noise and Antenna Noise Temperature
  • 4.4.1 Point Noise Sources
  • 4.4.2 Extended Noise Sources and Brightness Temperature
  • 4.4.3 Antenna Noise Figure
  • 4.4.4 Effects of Lossy Propagation Medium on the Observed Brightness Temperature
  • 4.4.5 Brightness Temperature of Some Extended Noise Sources
  • 4.4.6 Man-Made Noise
  • 4.5 System Noise Temperature
  • 4.6 Additive White Gaussian Noise Channel
  • References
  • Problems
  • Chapter 5 Pulse Modulation
  • 5.1 Analog-to-Digital Conversion
  • 5.1.1 Sampling
  • 5.1.2 Quantization
  • 5.1.3 Encoding
  • 5.1.4 Pulse Modulation Schemes
  • 5.2 Time-Division Multiplexing
  • 5.2.1 Time Division Multiplexing
  • 5.2.2 TDM Hierarchies
  • 5.2.3 Statistical Time-Division Multiplexing