Hello everybody, I have a generic question regarding shadowing effect and hope somebody in the mailing list can give me a hint, even though it is not TinyOS-specific.
Given a RF sender and a receiver, suppose the obstacles between them are fixed, both their material and dielectric properties, does the path loss caused by their shadowing vary? If yes, what causes the variation? If not, why is it generally modeled as a log-normal random variable? We can assume there is only one path between the sender and receiver if this simplifies the question. Thanks and look forward to your reply. -- -Xiaohui Liu TelosB TinyOS 2.1.2 www.cs.wayne.edu/xliu/
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