Wireless Technology Terms, Glossary and Dictionary
NLOS: Non Line of Sight
Non Line of Sight (NLOS), also known as near-line-of-sight or obstructed path/pathway, is a term used to describe radio transmission across a path that is partially obstructed, usually by a physical object in the Fresnel zone. Many types of radio transmissions depend, to varying degrees, on line of sight between the transmitter and receiver. Obstacles that commonly cause NLOS conditions include buildings, trees, hills, mountains, and, in some cases, high voltage electric power lines.
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