2018Ehancing the Role of Recreationist in the Conservation of Pa

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　　Content
1. Introduction
2.Channel model
2.1.Lee model
   2.1.1. outdoor model
   2.1.2. The Philosophy of Forming Lee' Model
    2.1.2.1 Caused by the human-made structures only
    2.1.2.2 Adding the cause of terrain contour
   2.1.3. A Normal-cell Model
   2.1.4. Microcell Model
2.2.Ray Tracing
  2.2.1. Indoor channel
  2.2.2. Physical phenomena involved
  2.2.3. General equation
   2.2.3.1 Reflection
   2.2.3.2 The transmission
   2.2.3.3 The diffraction
   2.2.3.4 The diffusion on a surface
   2.2.3.5 The divergence
  2.2.4. Ray tracing model in a forested environment
  2.2.5. Building Definition

2.3.JTC
(Joint Technical Committee)
2.3.1. History
2.3.2. wide band multipath propagation models
2.3.3 Physical Environments
2.3.4 General Channel Model
2.3.5. Doppler Spectrum
2.3.6. The Wide band Tapped Delay-Line Model
  2.3.6.1 Indoor
  2.3.6.2 Outdoor-Low antenna  
  2.3.6.3 Outdoor-High Antenna
2.3.7. Implementation     
  2.3.7.1  Simulation Block Diagram
  2.3.7.2 Simulation Algorithm and Result
3.Trend and issues on channel model
4, References
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