'Diffraction loss' diaporamas de présentation

Mobile Radio Propagation

Mobile Radio Propagation. Mobile radio channel is an important factor in wireless systems. Wired channels are stationary and predictable, while radio channels are random and have complex models . Modeling of radio channels is done in statistical fashion based on receiver measurements.

1.14k views • 74 slides

Figure 14.1 The UK microwave communications wideband distribution network

Figure 14.1 The UK microwave communications wideband distribution network. Figure 14.2 Splitting of a microwave frequency allocation into radio channels. Figure 14.3 Extraction (dropping) of a single radio channel in a microwave repeater.

599 views • 45 slides

3.7 Diffraction

3.7 Diffraction. allows RF signals to propagate to obstructed ( shadowed ) regions - over the horizon (around curved surface of earth) - behind obstructions received field strength rapidly decreases as receiver moves into obstructed region

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Wireless Communication Channels: Large-Scale Pathloss

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EELE 5490, Fall, 2009 Wireless Communications

EELE 5490, Fall, 2009 Wireless Communications. Ali S. Afana Department of Electrical Engineering Class 5 Dec. 4 th , 2009. Outline. Review Free space propagation Received power is a function of transmit power times gains of transmitter and receiver antennas

361 views • 21 slides