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Unformatted text preview: EE359 – Lecture 3 Outline Announcements First disc. Section Tues. 10/4, 67, Hewlett 103 HW posted, due Thurs 10/6 at 5pm. Nima OHs: Tues. 79PM in Packard 109; Wed. 79PM in Packard 104 Nima Email Ohs: Wed. 1011PM  Thurs 1011AM Log Normal Shadowing Combined Path Loss and Shadowing Cell Coverage Area Model Parameters from Measurements Lecture 2 Review Ray Tracing Models Free Space Model Power falloff with distance proportional to d2 Two Ray Model Power falloff with distance proportional to d4 General Ray Tracing Used for sitespecific models Empirical Models Simplified Model: P r =P t K[d /d] g , 2g8. Captures main characteristics of path loss Shadowing Models attenuation from obstructions Random due to random # and type of obstructions Typically follows a lognormal distribution dB value of power is normally distributed m =0 (mean captured in path loss), 4< s <12 (empirical) LLN used to explain this model Decorrelated over decorrelation distance X c X c Combined Path Loss...
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This note was uploaded on 10/16/2011 for the course ELECTRICAL EE251202 taught by Professor Rejaei during the Spring '10 term at Sharif University of Technology.
 Spring '10
 Rejaei
 Electromagnet

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