By Jianqing Wang
Providing an advent to the basics of physique quarter communications, this publication covers the most important issues of channel modeling, modulation and demodulation, and function evaluation
A systematic advent to physique region networks (BAN), this ebook specializes in 3 significant components: channel modeling, modulation/demodulation communications functionality, and electromagnetic compatibility issues. The content material is logically dependent to guide readers from an introductory point via to in-depth and extra complicated topics.
- Provides a concise advent to this rising subject in line with classroom-tested materials
- Details the most recent IEEE 802.15.6 typical activities
- Moves from very uncomplicated physics, to beneficial mathematic versions, after which to sensible considerations
- Covers not just EM physics and communications, but additionally organic applications
- Topics approached contain: hyperlink funds, bit blunders cost functionality, RAKE and variety reception; SAR research for human protection overview; and modeling of electromagnetic interference to implanted cardiac pacemakers
- Provides Matlab and Fortran courses for obtain from the significant other Website
Chapter 1 advent to physique region Communications (pages 1–19):
Chapter 2 Electromagnetic features of the Human physique (pages 21–53):
Chapter three Electromagnetic research equipment (pages 55–87):
Chapter four physique sector Channel Modeling (pages 89–142):
Chapter five Modulation/Demodulation (pages 143–180):
Chapter 6 physique quarter conversation functionality (pages 181–221):
Chapter 7 Electromagnetic Compatibility concerns (pages 223–266):
Chapter eight precis and destiny demanding situations (pages 267–271):
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Extra info for Body Area Communications: Channel Modeling, Communication Systems, and EMC
On the other hand, as the frequency increases, the shorter wavelength yields a larger normalized distance. This makes the 1/r term or the surface propagation term begin to have a significant contribution whereas the electrostatic coupling term becomes negligible. It should be noted that, however, since the surface propagation term consists of a gain factor GS ¼ ð1 À u2 þ u4 ÞF, the larger the gain factor, the larger the field component of surface propagation. Let us see the frequency dependence of the gain factor GS.
One is ha, the convective heat transfer coefficient from the human body surface to the ambient temperature, and the other is hb, the convective heat transfer coefficient from the internal surface to the internal cavity, which is generally larger than ha. These thermal parameters can be found in some physiological textbooks (Guyton and Hall, 1996), but a comprehensive database for the thermal parameters does not exist. 25 with the SAR as excitation, the temperature distribution inside the human body as a function of time can be obtained.
The solid and dashed lines are the approximated dielectric properties for the high water content and low water content tissues, respectively (Wang, Fujiwara, and Watanabe, 2006). , Fujiwara O. , “Approximation of aging effect on dielectric tissue properties for SAR assessment of mobile telephones,” IEEE Transactions on Electromagnetic Compatibility, 48, 2, 408–413, 2006. 7 should dominate the change in dielectric properties with age. In addition, it is known that Lichtenecker’s exponential law holds for er in composite dielectric materials (Lichtenecker, 1926).
Body Area Communications: Channel Modeling, Communication Systems, and EMC by Jianqing Wang