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Automotive FM Diversity Systems, Part I: Propagation Channel Modeling and Multipath Review
Technical Paper
2007-01-1731
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper represents Part I of a three part series on automotive FM diversity systems. Part I focuses on a review of multipath fading. Part II (2007-01-1732) deals with analog diversity systems which have been developed to combat the effects of this fading in an FM broadcast and Part III (2007-01-1734) discusses new digital implementations of FM diversity systems that have been implemented in DSP algorithms.
This paper reviews propagation channel modeling and multipath. Three cases are studied: Additive white Gaussian noise channel, the Rician channel and the Rayleigh channel. It is further noted that the Rician and Rayleigh channels can be either flat or frequency selective based on the values of the time delays in the reflected signal paths. When the delays are relatively short the channel acts like a wide filter and the fading acts on all spectral components of the signal equally. When the time delays are long the channel acts like a narrow band filter resulting in frequency selective fading.
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Citation
Shatara, R. and Marrah, J., "Automotive FM Diversity Systems, Part I: Propagation Channel Modeling and Multipath Review," SAE Technical Paper 2007-01-1731, 2007, https://doi.org/10.4271/2007-01-1731.Also In
SAE 2007 Transactions Journal of Passenger Cars: Electronic and Electrical Systems
Number: V116-7; Published: 2008-08-15
Number: V116-7; Published: 2008-08-15
References
- Jakes C. William “Microwave Mobile communications” IEEE Press 1994 1974
- Brennan D. G. “Linear Diversity Combining Techniques” Proceedings of the IRE 47 1075 1102 June 1959
- Manner E. University of the Bundeswehr Munich 1985
- Leopold R. February 1995
- Shatara R. S. “Combined Switched and Phase Aligned Multi-Antenna Diversity System for Signal-Error-Reduction in Mobile Receiving Systems” University of Bundeswehr Munich Germany January 2003
- Proakis J. G. “Digital Communications” McGraw-Hill Third 1995
- Shatara R. S. “Combined Switched and Phase Aligned Multi-Antenna Diversity System for Signal-Error-Reduction in Mobile Receiving Systems” University of Bundeswehr Munich Germany January 2003
- Sklar, B. “ Digital Communications, Fundamentals and Applications” Prentice Hall PTR Second 2001
- Rappaport. T. S. “Wireless Communications” Prentice Hall PTR Second 2002