R2.The four type of wireless networks identified in our taxonomy in section 6.1 areSingle Hop, Infrastructure basedSingle Hop, Infrastructure basedMulti Hop, Infrastructure basedMulti Hop, Infrastructure lessThe types we have used areSingle Hop, Infrastructure : based in café and library, cellular phonesSingle Hop, Infrastructure based: Bluetooth to transfer pictures or ringtones with friendsR3.The differences between the following types of wireless channel impairmentsPath loss: Electromagnetic radiation attenuates as it passes through matter. Like radio signal passing through a wall. Even in free space, the signal will disperse, resulting in decreased signal strength as the distance between sender and receiver increases.Multipath propagation : This occurs when portions of electromagnetic wave reflect off objects and the ground , taking paths of different lengths between a sender and a receiver.Interference from other resources: Radio sources transmitting the same frequency band will interfere with each other. In addition, electromagnetic noise within the environment like a nearby
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