COMPUTER NETWORKS AND COMMUNICATIONS
WIRELESS COMMUNICATION TECHNOLOGIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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false
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true
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Either A or B
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None of the above
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Detailed explanation-1: -The two-rays ground-reflection model is a multipath radio propagation model which predicts the path losses between a transmitting antenna and a receiving antenna when they are in line of sight (LOS). Generally, the two antenna each have different height.
Detailed explanation-2: -Two ray model considers both the direct path and a ground reflected propagated path between transmitter and receiver. A two-ray model, which consists of two overlapping waves at the receiver, one direct path and one reflected wave from the ground.
Detailed explanation-3: -Figure 2: Two ray ground reflection model For simplicity, it is assumed that the entire impinging signal on the surface is totally reflected back, i.e. there is no ET ( transmitted E-field component passing through the surface).
Detailed explanation-4: -Two ray model is useful when a single ground reflection of signal dominates multipath effect. The main reasons due to which multipath effect is generated could be reflection, diffraction and scattering. Because of this, multiple replicas of a signal are generated and power gain decreases.