<s>
A	O
base	B-General_Concept
transceiver	I-General_Concept
station	I-General_Concept
(	O
BTS	O
)	O
is	O
a	O
piece	O
of	O
equipment	O
that	O
facilitates	O
wireless	O
communication	O
between	O
user	O
equipment	O
(	O
UE	O
)	O
and	O
a	O
network	O
.	O
</s>
<s>
UEs	O
are	O
devices	O
like	O
mobile	O
phones	O
(	O
handsets	O
)	O
,	O
WLL	B-Architecture
phones	O
,	O
computers	O
with	O
wireless	O
Internet	O
connectivity	O
,	O
or	O
antennas	O
mounted	O
on	O
buildings	O
or	O
telecommunication	O
towers	O
.	O
</s>
<s>
The	O
network	O
can	O
be	O
that	O
of	O
any	O
of	O
the	O
wireless	O
communication	O
technologies	O
like	O
GSM	O
,	O
CDMA	B-Protocol
,	O
wireless	B-Architecture
local	I-Architecture
loop	I-Architecture
,	O
Wi-Fi	O
,	O
WiMAX	O
or	O
other	O
wide	O
area	O
network	O
(	O
WAN	O
)	O
technology	O
.	O
</s>
<s>
BTS	O
is	O
also	O
referred	O
to	O
as	O
the	O
node	O
B	O
(	O
in	O
3G	B-Architecture
networks	I-Architecture
)	O
or	O
,	O
simply	O
,	O
the	O
base	O
station	O
(	O
BS	O
)	O
.	O
</s>
<s>
Though	O
the	O
term	O
BTS	O
can	O
be	O
applicable	O
to	O
any	O
of	O
the	O
wireless	O
communication	O
standards	O
,	O
it	O
is	O
generally	O
associated	O
with	O
mobile	O
communication	O
technologies	O
like	O
GSM	O
and	O
CDMA	B-Protocol
.	O
</s>
<s>
Diversity	B-Protocol
techniques	I-Protocol
To	O
improve	O
the	O
quality	O
of	O
the	O
received	O
signal	O
,	O
often	O
two	O
receiving	O
antennas	O
are	O
used	O
,	O
placed	O
at	O
a	O
distance	O
equal	O
to	O
an	O
odd	O
multiple	O
of	O
a	O
quarter	O
of	O
the	O
corresponding	O
wavelength	O
.	O
</s>
<s>
Other	O
than	O
antenna	O
or	O
space	O
diversity	O
,	O
there	O
are	O
other	O
diversity	B-Protocol
techniques	I-Protocol
such	O
as	O
frequency/time	O
diversity	O
,	O
antenna	O
pattern	O
diversity	O
,	O
and	O
polarization	O
diversity	O
.	O
</s>
