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Cấu trúc

  • Wireless Communications Principles and Practice 2nd Edition T.S. Rappaport

  • Doppler Shift Geomerty

  • Channel issues

  • Complex Baseband model for RF systems

  • Time-varying impulse response

  • Measured impulse responses

  • Channel Sounder: Pulse type

  • Channel Sounder: PN Type

  • Channel Sounder: Swept Freq. type

  • Measured power delay profiles

  • Indoor Power Delay Profile

  • Typical RMS delay spreads

  • Two independent fading issues

  • Flat-fading (non-freq. Selective)

  • Frequency selective fading

  • Slide 16

  • Rayleigh fading

  • Small-scale envelope distributions

  • Ricean and Rayleigh fading distributions

  • Small-scale fading mechanism

  • Doppler spectrum

  • Spectrum of Envelope of doppler faded signal

  • Simulating Doppler/Small-scale fading

  • Simulating Doppler fading

  • Slide 25

  • Simulating multipath with Doppler-induced Rayleigh fading

  • Simulating 2-ray multipath

  • SIRCIM – Simulation of all indoor propagation Characteristics

  • SMRCIM – Simulation of all outdoor propagation Characteristics

  • SIRCIM and SMRCIM

  • Angular Spread model

  • Spatial distribution of Multipath

  • Angular Spread key to fading

  • Spatial orientation of multipath impacts the depths of fading

  • Angular Distribution of power

  • Angular Spread predicts correlation distances

  • Slide 37

Nội dung

© 2 0 0 2 P e a r s o n E d u c a t i o n , I n c . C o m m e r c i a l u s e , d i s t r i b u t i o n , o r s a l e p r o h i b i t e d . Wireless Communications Principles and Practice 2 nd Edition T.S. Rappaport Chapter 5: Mobile Radio Propagation: Small-Scale Fading and Multipath as it applies to Modulation Techniques © 2 0 0 2 P e a r s o n E d u c a t i o n , I n c . C o m m e r c i a l u s e , d i s t r i b u t i o n , o r s a l e p r o h i b i t e d . Doppler Shift Geomerty © 2 0 0 2 P e a r s o n E d u c a t i o n , I n c . C o m m e r c i a l u s e , d i s t r i b u t i o n , o r s a l e p r o h i b i t e d . Channel issues © 2 0 0 2 P e a r s o n E d u c a t i o n , I n c . C o m m e r c i a l u s e , d i s t r i b u t i o n , o r s a l e p r o h i b i t e d . Complex Baseband model for RF systems © 2 0 0 2 P e a r s o n E d u c a t i o n , I n c . C o m m e r c i a l u s e , d i s t r i b u t i o n , o r s a l e p r o h i b i t e d . Time-varying impulse response © 2 0 0 2 P e a r s o n E d u c a t i o n , I n c . C o m m e r c i a l u s e , d i s t r i b u t i o n , o r s a l e p r o h i b i t e d . Measured impulse responses © 2 0 0 2 P e a r s o n E d u c a t i o n , I n c . C o m m e r c i a l u s e , d i s t r i b u t i o n , o r s a l e p r o h i b i t e d . Channel Sounder: Pulse type © 2 0 0 2 P e a r s o n E d u c a t i o n , I n c . C o m m e r c i a l u s e , d i s t r i b u t i o n , o r s a l e p r o h i b i t e d . Channel Sounder: PN Type © 2 0 0 2 P e a r s o n E d u c a t i o n , I n c . C o m m e r c i a l u s e , d i s t r i b u t i o n , o r s a l e p r o h i b i t e d . Channel Sounder: Swept Freq. type © 2 0 0 2 P e a r s o n E d u c a t i o n , I n c . C o m m e r c i a l u s e , d i s t r i b u t i o n , o r s a l e p r o h i b i t e d . Measured power delay profiles [...]... Simulating 2-ray multipath © 2002 Pearson Education, Inc Commercial use, distribution, or sale prohibited SIRCIM – Simulation of all indoor propagation Characteristics © 2002 Pearson Education, Inc Commercial use, distribution, or sale prohibited SMRCIM – Simulation of all outdoor propagation Characteristics • Available from Wireless Valley Communications, Inc • Source code in C is available • www Wirelessvalley.com... © 2002 Pearson Education, Inc Commercial use, distribution, or sale prohibited Small-scale envelope distributions © 2002 Pearson Education, Inc Commercial use, distribution, or sale prohibited Ricean and Rayleigh fading distributions © 2002 Pearson Education, Inc Commercial use, distribution, or sale prohibited Small-scale fading mechanism © 2002 Pearson Education, Inc Commercial use, distribution,... spreads © 2002 Pearson Education, Inc Commercial use, distribution, or sale prohibited Two independent fading issues © 2002 Pearson Education, Inc Commercial use, distribution, or sale prohibited Flat-fading (non-freq Selective) © 2002 Pearson Education, Inc Commercial use, distribution, or sale prohibited Frequency selective fading © 2002 Pearson Education, Inc Commercial use, distribution, or sale prohibited... Inc Commercial use, distribution, or sale prohibited Spectrum of Envelope of doppler faded signal © 2002 Pearson Education, Inc Commercial use, distribution, or sale prohibited Simulating Doppler/Small-scale fading © 2002 Pearson Education, Inc Commercial use, distribution, or sale prohibited Simulating Doppler fading © 2002 Pearson Education, Inc Commercial use, distribution, or sale prohibited Simulating . o r s a l e p r o h i b i t e d . Wireless Communications Principles and Practice 2 nd Edition T.S. Rappaport Chapter 5: Mobile Radio Propagation: Small-Scale Fading and Multipath as it applies. C o m m e r c i a l u s e , d i s t r i b u t i o n , o r s a l e p r o h i b i t e d . Flat-fading (non-freq. Selective) © 2 0 0 2 P e a r s o n E d u c a t i o n , I n c . C o m m e r c i a l . C o m m e r c i a l u s e , d i s t r i b u t i o n , o r s a l e p r o h i b i t e d . Time-varying impulse response © 2 0 0 2 P e a r s o n E d u c a t i o n , I n c . C o m m e r c i a l

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