Table of Contents
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L
LOS and NLOS
Load
Lux
M
MHz
mW
MPEG
Modulation
Multicast
N
nm
Means...
Line-of-sight propagation refers to electro-magnetic radiation
includi n g light emissions moving in a strai g ht li n e. The ray s or
waves are diffracted, refracted, reflected, or absorbed by
atmosphere and obstructions with material and usually cannot
move above the horizon or behind obstacles.
NLOS is Non Line-of-sight.
A dev i c e that consumes electrical power.
The lux (symbol: lx) is the SI uni t of il l uminance and luminous
emittance. It i s used i n photometry as a measure of the apparent
intensi t y of light hitting or passi n g through a surface.
Means...
Megahertz is the same as 1,000,000 Hz
Milliwatt - The milliwatt (symbol: mW) i s equal to one
–3
thousandth (10
) of a watt.
Moving Pictures Experts Group.
To change the output of a transmitter in ampli t ude, phase or
frequency in accordance with the information to be transmitted.
Data is superimposed on a carrier current or wave by means of a
procedure call e d modul a tion. Signal modulation can be done in
one of two way s: analogue and digital. In recent y ears, digital
modul a tion has been getting more usual, while analogue
modul a tion methods hav e been used less. There continues to be
plenty of analogue signals around, but, and they will probably not
become totally ex ti n ct.
Multicasti n g is sending data from a sender to multiple recei v ers
where each receiv er signal s that they want to receive the data.
Means...
A nanometer; sy mbol nm is a unit of length in the metric
system, equal to one bil l ionth of a meter (i.e., 10
millionth of a mil l imeter).
-9
m or one
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