
60-1
60.1 Introduction
Recent advances in telecommunications are changing our society. e main reasons for this evolution
ar
e
th
e
in
crease
of co
nnectivity
an
d
th
e
mo
nitoring
ad
vances,
wh
ich
pr
ovide
mo
bility
to hu
mans
an
d
increase accessibility for the handicapped.
Wi
reless
te
lecommunications
al
low
tr
ansferring
inf
ormation
be
tween
tw
o
or mo
re
de
vices
th
at
ar
e
no
t
ph
ysically
co
nnected
. Fi
gure
60.1 sh
ows
wi
reless
ne
tworks
tr
ansmission
te
chnologies
co
mparing
ba
ndwidth
with power consumption. As shown in this gure, higher transmission speeds imply higher power consump-
tion
. In or
der
to gu
arantee
pe
ople
mo
bility,
th
ere
ha
s
to be a co
mpromise
be
twee ...