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e
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u
n
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to
a
m
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sig
n
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l
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n
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l
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e
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h
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e
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e
c
ts
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f
th
e
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h
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r
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m
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e
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h
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e
s
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c
t
th
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d
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ts
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rit
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t
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ted
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n
a
l.
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a
n
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li
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riz
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ti
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tec
h
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i
q
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e
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ier l
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se
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t
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l
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n
th
e
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ly
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it
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sta
n
d
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e
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n
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sm
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ter
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ter sim
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d
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h
p
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er
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ier
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i
n
ea
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izatio
n
tec
h
n
iq
u
e
OFDM
P
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to
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In
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p
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A
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r
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ab
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b
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za
q
Hu
s
s
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in
,
Dep
ar
t
m
en
t o
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E
lectr
ical
E
n
g
i
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r
in
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,
Un
i
v
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s
it
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B
ab
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lo
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,
Hillah
-
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,
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lect.
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t.,
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lt
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n
g
.
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i
v
er
s
i
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ab
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ail:
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r
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itn
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o
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ab
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l
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n
.
ed
u
.
iq
1.
I
NT
RO
D
UCT
I
O
N
OFDM
,
th
e
m
u
lti
-
ca
r
r
ier
tr
an
s
m
i
s
s
io
n
tec
h
n
iq
u
e
,
i
s
an
ex
ce
lle
n
t
m
e
th
o
d
f
o
r
h
i
g
h
s
p
ee
d
b
i
-
d
ir
ec
tio
n
al
w
ir
eless
d
ata
co
m
m
u
n
icat
io
n
[
1
]
.
I
t
is
v
er
y
s
i
m
ilar
to
th
e
w
ell
-
k
n
o
w
n
tech
n
iq
u
e
o
f
Fre
q
u
e
n
c
y
Div
i
s
io
n
M
u
ltip
lex
in
g
(
FDM)
.
I
t
u
s
es
th
e
s
a
m
e
p
r
in
cip
les
o
f
FDM
to
allo
w
m
u
lt
ip
le
m
es
s
a
g
es
to
b
e
s
en
t
o
v
er
a
s
i
n
g
le
r
ad
io
ch
a
n
n
el.
I
t
o
f
f
er
s
a
m
u
ch
m
o
r
e
co
n
tr
o
lled
m
an
n
er
,
w
h
ic
h
i
s
a
llo
w
in
g
a
n
i
m
p
r
o
v
ed
s
p
ec
tr
al
ef
f
icien
c
y
[
2
]
.
A
n
OF
DM
s
i
g
n
al
co
n
s
is
ts
o
f
a
s
u
m
o
f
s
u
b
ca
r
r
ier
s
th
at
is
m
o
d
u
lated
b
y
u
s
in
g
P
h
ase
S
h
i
f
t
Ke
y
i
n
g
(
P
SK)
o
r
Qu
ad
r
atu
r
e
Am
p
l
itu
d
e
Mo
d
u
latio
n
(
QA
M)
.
A
lt
h
o
u
g
h
OF
DM
p
r
o
v
id
es
g
o
o
d
s
p
ec
tr
al
ef
f
icien
c
y
,
it
p
r
o
d
u
ce
s
a
s
ig
n
a
l
w
it
h
a
f
l
u
ctu
a
tin
g
en
v
elo
p
e
th
at
g
e
n
er
ates
I
n
ter
m
o
d
u
latio
n
Dis
to
r
tio
n
(
I
MD
)
at
th
e
s
y
s
te
m
’
s
p
o
w
er
a
m
p
li
f
ier
s
.
Mo
s
t
o
f
t
h
e
I
MD
p
o
wer
ap
p
ea
r
s
as
an
i
n
ter
f
er
en
ce
b
et
w
ee
n
ad
j
ac
en
t
ch
an
n
e
l
s
,
w
h
ic
h
r
eq
u
ir
es
t
h
e
u
s
e
o
f
lin
ea
r
h
ig
h
p
o
w
er
a
m
p
li
f
ier
s
.
C
o
n
s
id
er
i
n
g
b
ac
k
-
o
f
f
p
o
w
er
is
t
h
e
s
i
m
p
les
t
w
a
y
to
i
m
p
r
o
v
e
th
e
li
n
ea
r
it
y
o
f
t
h
e
p
o
w
er
a
m
p
li
f
ier
w
h
ic
h
co
r
r
esp
o
n
d
s
to
m
o
v
in
g
t
h
e
o
p
er
atin
g
p
o
in
t
o
f
t
h
e
a
m
p
li
f
ier
to
th
e
l
in
ea
r
r
e
g
io
n
.
I
n
cr
ea
s
in
g
t
h
e
b
ac
k
-
o
f
f
o
f
t
h
e
p
o
w
er
a
m
p
li
f
ier
m
ea
n
s
t
h
at
t
h
e
s
ig
n
al
i
s
co
v
er
ed
b
etter
in
th
e
li
n
ea
r
r
an
g
e,
an
d
th
u
s
th
e
e
f
f
ec
ts
o
f
n
o
n
lin
ea
r
ities
ar
e
r
ed
u
ce
d
.
Ho
w
ev
er
,
p
o
w
er
ef
f
icie
n
c
y
i
s
r
ed
u
ce
d
as
w
ell.
So
a
tr
ad
eo
f
f
b
et
w
ee
n
e
f
f
icien
c
y
an
d
li
n
ea
r
it
y
is
n
ee
d
ed
.
L
i
n
ea
r
izatio
n
t
ec
h
n
iq
u
es
p
r
o
v
e
to
b
e
th
e
b
est
s
o
l
u
tio
n
in
o
r
d
er
to
i
m
p
r
o
v
e
p
o
w
er
a
m
p
li
f
ier
lin
ea
r
it
y
w
it
h
o
u
t
h
a
v
i
n
g
a
n
eg
ati
v
e
i
m
p
ac
t
o
n
ef
f
icien
c
y
[
3
]
.
Se
v
er
al
k
in
d
s
o
f
li
n
ea
r
izatio
n
tech
n
iq
u
es
f
o
r
p
o
w
er
a
m
p
li
f
ier
s
h
a
v
e
b
ee
n
p
r
o
p
o
s
ed
s
u
ch
a
s
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
n
t J
E
lec
&
C
o
m
p
E
n
g
,
Vo
l.
9
,
No
.
4
,
A
u
g
u
s
t 2
0
1
9
:
2
7
2
5
-
2731
2726
Feed
f
o
r
w
ar
d
,
Feed
b
a
ck
,
P
r
ed
is
to
r
tio
n
,
L
i
n
ea
r
Am
p
li
f
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n
u
s
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No
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C
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p
o
n
en
t
[
L
I
N
C
]
a
n
d
E
n
v
elo
p
e
E
li
m
in
at
io
n
an
d
R
e
s
to
r
atio
n
[
E
E
R
]
.
T
h
is
w
o
r
k
ai
m
s
to
s
t
u
d
y
th
e
i
m
p
ac
t
o
f
a
m
p
lif
ier
n
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n
l
in
ea
r
it
y
f
o
r
d
if
f
er
e
n
t
m
o
d
u
latio
n
tech
n
iq
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es
a
n
d
th
e
e
f
f
ec
t
o
f
t
h
e
p
r
e
-
d
is
to
r
ti
o
n
l
in
ea
r
izatio
n
tech
n
i
q
u
e
o
n
it
i
n
OFD
M
s
y
s
te
m
.
P
r
e
-
d
is
to
r
tio
n
lin
ea
r
iz
atio
n
tech
n
iq
u
e
i
s
u
s
ed
w
id
el
y
b
ec
au
s
e
o
f
its
s
tab
ilit
y
an
d
it
s
h
ig
h
e
f
f
ic
ien
c
y
.
2.
B
ASI
C
P
RINC
I
P
L
E
O
F
O
F
DM
T
h
e
OFDM
id
ea
u
t
ilizes
i
n
f
o
r
m
atio
n
s
p
r
ea
d
in
g
w
h
ic
h
i
s
tr
an
s
m
itted
o
v
er
a
n
e
x
te
n
d
ed
n
u
m
b
er
o
f
ca
r
r
ier
s
,
ea
ch
b
ein
g
b
alan
ce
d
at
a
lo
w
r
ate.
T
h
e
tr
an
s
p
o
r
ter
s
ar
e
g
en
er
ated
to
b
e
o
r
th
o
g
o
n
al
to
ea
ch
o
th
er
b
y
s
u
itab
l
y
p
ic
k
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en
c
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s
ep
ar
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et
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t
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m
[
5
,
6
]
.
W
ith
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s
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to
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7
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D
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r
an
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r
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ctiv
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u
r
e
1
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:
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(
1
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u
r
e
1
.
T
h
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co
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p
t o
f
OFDM:
(
a)
Mu
lti
-
C
ar
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ier
tech
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iq
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b
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th
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lt
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ier
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3.
RE
SU
L
T
S
A
ND
AN
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SI
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it
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[
8
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Evaluation Warning : The document was created with Spire.PDF for Python.
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1
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I
n
a
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t P
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w
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a
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u
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W
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atica
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[
5
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(
(
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(
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(
3
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T
w
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to
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ates
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1
1
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.
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5
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f
A
C
P
R
.
T
h
e
o
v
er
all
s
y
s
te
m
r
esp
o
n
s
e
o
f
n
o
n
-
co
n
s
tan
t
m
o
d
u
lated
s
i
g
n
als
ar
e
ex
p
ec
ted
to
b
e
e
n
h
a
n
ce
d
u
s
i
n
g
R
F
p
o
w
er
a
m
p
li
f
ier
li
n
ea
r
izatio
n
tec
h
n
iq
u
es.
T
h
is
ca
n
b
e
ac
h
ie
v
ed
b
y
r
ed
u
cin
g
AC
P
R
in
t
h
e
P
A
o
u
t
p
u
t
p
o
w
er
s
p
ec
tr
al
d
en
s
it
y
[
3
]
as p
r
esen
ted
in
th
e
f
o
llo
w
in
g
eq
u
at
io
n
:
=
ℎ
ℎ
ℎ
(
5
)
4.
P
RO
P
O
SE
D
M
O
DE
L
O
F
DIS
T
O
R
T
I
O
N
T
E
CH
NI
Q
U
E
P
r
o
f
icien
c
y
is
a
n
e
s
s
e
n
tial
s
y
m
p
a
th
y
to
w
ar
d
t
h
e
p
o
w
er
a
m
p
lif
ier
cr
ea
to
r
s
.
I
n
a
n
y
ca
s
e,
t
h
e
tr
ad
eo
f
f
f
o
r
h
i
g
h
e
f
f
ec
ti
v
en
e
s
s
is
r
eg
u
lar
l
y
r
es
u
lt
s
i
n
r
ed
u
c
in
g
i
n
li
n
ea
r
it
y
,
an
d
th
e
d
i
m
i
n
i
s
h
i
n
g
l
in
ea
r
it
y
i
s
ad
d
ed
to
g
h
a
s
tl
y
o
b
s
tr
u
ct
io
n
o
u
ts
id
e
t
h
e
p
r
o
p
o
s
ed
tr
an
s
f
er
s
p
ee
d
.
P
r
e
-
d
is
to
r
tio
n
g
i
v
es
b
etter
ef
f
ec
ti
v
en
e
s
s
,
lo
w
er
ex
p
en
s
e
an
d
ap
p
r
o
p
r
iaten
ess
o
f
li
n
ea
r
it
y
f
r
o
m
th
e
o
t
h
er
li
n
ea
r
izatio
n
s
y
s
te
m
s
.
T
h
is
is
ac
h
iev
ed
b
ased
o
n
th
e
g
r
o
u
n
d
s
th
at
a
n
o
n
li
n
ea
r
cir
cu
it
is
e
m
b
ed
d
ed
b
etw
ee
n
t
h
e
in
f
o
r
m
atio
n
s
ig
n
al
an
d
t
h
e
P
A
.
T
h
is
n
o
n
li
n
ea
r
cir
cu
it
cr
ea
tes
t
h
e
I
MD
i
te
m
s
b
ac
k
w
ar
d
s
to
th
o
s
e
d
eliv
er
ed
b
y
th
e
P
A
an
d
cr
o
s
s
o
u
t
th
e
i
m
p
ac
t
o
f
P
A
n
o
n
li
n
ea
r
it
y
ac
co
r
d
in
g
l
y
.
Fi
g
u
r
e
2
d
em
o
n
s
tr
ate
s
an
o
u
tli
n
e
o
f
a
p
r
o
p
o
s
ed
p
r
e
-
d
is
to
r
tio
n
lin
ea
r
izer
.
T
h
e
p
r
e
-
d
is
to
r
tio
n
li
n
ea
r
izer
cir
cu
it
is
co
m
p
o
s
ed
o
f
t
wo
cir
cles
a
n
d
t
h
r
ee
w
a
y
s
.
W
h
er
e
th
e
in
f
o
r
m
atio
n
s
i
g
n
a
l
is
s
ep
ar
ated
in
to
th
r
ee
p
ar
allel
w
a
y
s
in
t
h
e
cir
cu
i
t
an
d
a
f
ter
w
ar
d
r
ec
o
m
b
in
ed
to
w
ar
d
th
e
en
d
o
f
p
r
e
-
d
is
to
r
tio
n
li
n
ea
r
iz
er
.
T
w
o
w
a
y
s
ar
e
d
ir
ec
t
a
n
d
ca
n
e
s
s
e
n
tiall
y
b
e
a
le
n
g
th
o
f
tr
an
s
m
i
s
s
io
n
l
in
e.
T
h
e
o
th
er
w
a
y
i
s
n
o
n
li
n
ea
r
tr
ad
em
ar
k
t
h
at
ca
n
b
e
ac
q
u
ir
ed
f
r
o
m
a
s
p
ea
k
er
cr
ash
ed
i
n
to
i
m
m
er
s
io
n
ar
ea
.
I
n
th
e
f
ir
s
t
lo
o
p
,
th
e
p
o
w
er
a
m
p
li
f
ier
a
m
p
li
f
ie
s
th
e
in
p
u
t
s
i
g
n
al
in
t
h
e
u
p
p
er
b
r
an
ch
w
it
h
a
v
o
ltag
e
g
ain
o
f
A
v
w
h
ic
h
lead
s
to
a
m
p
l
if
y
t
h
e
i
n
p
u
t
s
i
g
n
al
as
w
e
ll
as
th
e
ap
p
ea
r
an
ce
o
f
d
is
to
r
tio
n
v
o
ltag
e
v
d
b
y
a
ce
r
tain
a
m
o
u
n
t.
=
+
.
(
6
)
T
h
e
atten
u
ato
r
cir
cu
it
w
i
th
t
h
e
tr
an
s
f
er
f
u
n
ctio
n
1
A
v
th
at
lo
ca
ted
af
ter
th
e
a
m
p
l
if
ier
i
s
u
s
ed
to
d
ec
r
ea
s
e
th
e
a
m
p
li
f
ied
s
i
g
n
a
l t
o
th
e
lev
el
o
f
l
in
ea
r
s
i
g
n
al.
=
=
+
(
7
)
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
n
t J
E
lec
&
C
o
m
p
E
n
g
,
Vo
l.
9
,
No
.
4
,
A
u
g
u
s
t 2
0
1
9
:
2
7
2
5
-
2731
2728
Fig
u
r
e
2
.
B
lo
ck
d
iag
r
a
m
o
f
p
o
w
er
a
m
p
l
if
ier
s
y
s
te
m
w
it
h
p
r
ed
is
to
r
tio
n
lin
ea
r
izer
.
T
h
e
s
ig
n
al
o
f
th
e
m
id
d
le
b
r
an
ch
is
a
p
h
ase
s
h
i
f
ted
v
er
s
io
n
o
f
th
e
o
r
ig
in
al
R
F
s
ig
n
al.
W
h
ile
th
e
s
i
g
n
a
l
in
t
h
e
u
p
p
er
b
r
an
ch
w
ill
b
e
1
8
0
°
o
u
t
o
f
p
h
ase.
T
h
is
s
ig
n
al
is
co
n
ta
m
i
n
ated
w
i
th
d
is
to
r
tio
n
t
h
at
g
e
n
er
ated
b
y
th
e
p
o
w
er
a
m
p
li
f
ier
.
T
h
u
s
,
w
h
en
th
e
t
w
o
s
ig
n
al
s
in
th
i
s
lo
o
p
ar
e
r
ec
o
m
b
i
n
ed
at
th
e
o
u
tp
u
t,
w
ill
g
e
t
o
n
l
y
o
v
er
th
e
d
is
to
r
tio
n
s
ig
n
al.
1
=
−
=
+
−
=
.
(
8
)
I
n
t
h
e
s
ec
o
n
d
lo
o
p
,
th
e
s
ig
n
al
r
es
u
lt
s
f
r
o
m
t
h
e
f
ir
s
t
co
m
b
in
er
is
p
h
ase
s
h
if
ted
b
y
1
8
0
°
an
d
r
ec
o
m
b
i
n
ed
w
it
h
t
h
e
s
i
g
n
a
l
t
h
at
co
m
i
n
g
f
r
o
m
lo
w
er
p
at
h
.
T
h
e
r
es
u
lt
i
s
th
e
o
r
i
g
i
n
al
s
i
g
n
al
m
i
n
u
s
it
t
h
e
o
u
tp
u
t
d
is
to
r
tio
n
th
at
g
en
er
ated
b
y
t
h
e
p
r
e
-
d
is
to
r
ter
Am
p
l
if
ier
.
2
=
−
1
=
−
.
(
9
)
T
h
e
o
u
tp
u
t
s
ig
n
al
t
h
at
is
co
m
i
n
g
f
r
o
m
a
cir
c
u
it
o
f
p
r
e
-
d
is
to
r
tio
n
li
n
ea
r
ize
co
n
ta
in
s
d
is
to
r
ti
o
n
w
h
ich
is
th
e
o
p
p
o
s
ite
o
f
th
e
d
is
to
r
ti
o
n
th
at
r
es
u
lts
f
r
o
m
a
m
p
li
f
ica
tio
n
.
T
h
ey
w
i
ll
ca
n
ce
l
ea
c
h
o
th
er
an
d
th
e
o
u
tp
u
t
s
ig
n
al
w
il
l b
e
al
m
o
s
t
f
r
ee
o
f
d
is
to
r
tio
n
.
=
+
(
1
0
)
=
(
−
)
+
=
−
+
(
1
1
)
=
(
1
2
)
T
h
e
k
e
y
to
g
o
o
d
p
r
ed
is
to
r
tio
n
f
ilter
i
n
g
is
to
m
atc
h
t
h
e
A
M/
AM
a
n
d
A
M/P
M
r
esp
o
n
s
e
s
o
f
th
e
d
is
to
r
tio
n
g
e
n
er
atin
g
ele
m
en
t w
it
h
t
h
e
A
M/
A
M
a
n
d
A
M/P
M
r
esp
o
n
s
es o
f
t
h
e
a
m
p
li
f
ier
b
ei
n
g
p
r
e
-
d
i
s
to
r
ted
.
5.
E
XP
E
R
I
M
E
NT
A
L
RE
SUL
T
S
E
x
p
er
i
m
e
n
tal
w
o
r
k
w
as
ca
r
r
ied
o
u
t
in
th
i
s
s
t
u
d
y
u
s
i
n
g
A
W
R
De
s
i
g
n
E
n
v
ir
o
n
m
e
n
t.
T
h
e
p
r
e
-
d
is
to
r
tio
n
lin
ea
r
izatio
n
tech
n
iq
u
e
is
s
i
m
u
lated
f
o
r
p
o
w
er
a
m
p
lif
ier
i
n
OFDM
s
y
s
te
m
.
5
.
1
.
Sy
s
t
e
m
pa
ra
m
et
er
s
T
h
e
OFDM
s
ig
n
al
f
o
r
s
i
m
u
lat
i
o
n
p
ar
am
e
ter
s
is
s
e
lecte
d
b
ased
o
n
th
e
DVB
-
T
s
tan
d
ar
d
as in
T
a
b
le
1
.
T
ab
le
1
.
OFDM
Mo
d
el
Sy
s
te
m
P
ar
a
m
eter
s
S
o
u
r
c
e
o
f
D
a
t
a
R
a
n
d
o
m
Ty
p
e
o
f
M
o
d
u
l
a
t
i
o
n
s
P
S
K
,
Q
A
M
M
1
6
,
6
4
,
2
5
6
N
u
mb
e
r
o
f
S
u
b
c
a
r
r
i
e
r
s
1
7
0
5
P
o
w
e
r
A
mp
l
i
f
i
e
r
G
=
2
6
,
P
1
d
B
=
4
5
C
o
d
i
n
g
C
o
n
v
o
l
u
t
i
o
n
w
i
t
h
r
a
t
e
1
/
2
M
o
d
e
2k
S
u
b
c
a
r
r
i
e
r
S
p
a
c
i
n
g
4
.
4
6
4
(
k
H
z
)
G
u
a
r
d
I
n
t
e
r
v
a
l
0
.
0
3
1
2
5
B
a
n
d
w
i
d
t
h
7
6
1
1
.
1
2
(
M
H
z
)
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J
E
lec
&
C
o
m
p
E
n
g
I
SS
N:
2
0
8
8
-
8708
E
n
h
a
n
ci
n
g
th
e
B
E
R
a
n
d
A
C
LR
fo
r
th
e
HP
A
u
s
in
g
p
r
e
-
d
is
to
r
tio
n
tech
n
iq
u
e
(
E
h
a
b
A
b
d
u
lr
a
z
z
a
q
Hu
s
s
ein
)
2729
5
.
2
.
A
Co
m
pa
riso
n o
f
B
E
R
p
er
f
o
r
m
a
nce
s
o
f
1
6
P
SK
w
it
h 1
6
Q
AM
Fig
u
r
e
3
(
a,
b
,
an
d
c)
s
h
o
w
s
B
E
R
v
s
.
S
NR
f
o
r
1
6
P
SK
an
d
1
6
QA
M
OFDM
s
y
s
te
m
w
it
h
a
n
d
w
it
h
o
u
t
P
DL
T
(
P
r
e
-
Dis
to
r
tio
n
L
in
ea
r
i
za
tio
n
T
ec
h
n
iq
u
e)
f
o
r
d
if
f
er
e
n
t
v
al
u
es
(
1
5
,
2
0
an
d
2
5
)
d
B
m
o
f
in
p
u
t
p
o
w
er
f
o
r
OFDM
s
y
s
te
m
.
5
.
3
.
A
Co
m
pa
riso
n o
f
B
E
R
per
f
o
r
m
a
nce
s
o
f
6
4
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SK
w
i
t
h 6
4
Q
AM
Fig
u
r
e
4
(
a,
b
,
an
d
c)
s
h
o
w
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h
e
B
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R
v
s
.
SN
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as
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n
Fig
u
r
e
3
b
u
t
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e
v
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e
o
f
M
w
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s
ch
a
n
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4
.
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m
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6
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5
6
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er
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o
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ce
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ar
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r
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n
d
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n
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g
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r
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d
5
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s
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t
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in
OFDM
s
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m
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d
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t P
DL
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(
a)
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4
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p
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6
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in
OFDM
s
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m
w
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h
an
d
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it
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o
u
t P
DL
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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2730
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b
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u
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d
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u
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A
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f
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P
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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&
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p
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N:
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2731
RE
F
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NC
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S
[1
]
P
a
l
o
m
a
Ga
rc
ía
-
Dú
c
a
r,
J
e
sú
s
d
e
M
in
g
o
a
n
d
A
n
to
n
io
V
a
ld
o
v
in
o
s,
“
M
isa
li
g
n
m
e
n
ts
F
e
e
d
f
o
r
w
a
r
d
T
ra
n
s
m
it
ter
Co
rre
c
ti
o
n
De
sig
n
f
o
r
No
n
li
n
e
a
r
Disto
rti
o
n
Ca
n
c
e
ll
a
ti
o
n
i
n
OFDM
S
y
ste
m
s
,
”
1
-
4
2
4
4
-
0
0
6
3
-
i
2
0
0
6
I
E
EE
,
2
0
0
6
.
[2
]
A
.
S
in
g
h
,
H.
Ka
u
r,
“
No
n
li
n
e
a
rit
y
A
n
a
l
y
sis
o
f
Hi
g
h
P
o
w
e
r
Am
p
li
fier
in
OFDM
S
y
ste
m
,
”
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
Co
mp
u
ter
A
p
p
li
c
a
ti
o
n
s
,
Vo
l.
3
7
–
No
.
2
,
Ja
n
u
a
ry
2
0
1
2
.
[3
]
Zi
a
d
El
-
Kh
a
ti
b
,
L
e
o
n
a
rd
M
a
c
Eac
h
e
rn
a
n
d
S
a
m
y
A
.
M
a
h
m
o
u
d
,
“
Distrib
u
ted
C
M
OS
Bi
d
irec
ti
o
n
a
l
Am
p
li
f
ier
s
,
”
Ca
rleto
n
Un
iv
e
r
sity
,
2
0
1
2
.
[4
]
S
u
ra
n
jan
a
Ju
li
u
s,
“
De
sig
n
a
n
d
Im
p
le
m
e
n
tatio
n
o
f
A
n
ET
S
I
-
S
DR
OFDM
T
ra
n
s
m
it
ter
w
it
h
P
o
w
e
r
Am
p
li
f
ier
L
in
e
a
riza
ti
o
n
,
”
M
.
S
c
.
T
h
e
sis,
Un
iv
e
rsit
y
o
f
S
a
s
k
a
tch
e
w
a
n
,
2
0
1
0
.
[5
]
Eh
a
b
A
.
Hu
ss
e
in
,
M
o
h
a
m
m
e
d
A
.
A
b
d
u
l
k
a
d
h
im
,
“
P
e
rf
o
r
m
a
n
c
e
I
m
p
ro
v
e
m
e
n
t
o
f
BER
in
OFDM
S
y
s
tem
u
sin
g
F
e
e
d
F
o
rw
a
r
d
Tec
h
n
iq
u
e
o
n
P
o
w
e
r
Am
p
li
f
ier,”
In
ter
n
a
ti
o
n
a
l
J
o
u
r
n
a
l
o
f
Co
mp
u
ter
Ap
p
li
c
a
ti
o
n
s
(
IJ
CA)
,
V
o
l
.
7
5
,
No
.
4
,
A
u
g
u
st 2
0
1
3
.
[6
]
Bra
h
m
a
ji
T
.
A
.
R.
K,
“
A
n
e
ff
icie
n
t
ICI
Ca
n
c
e
ll
a
ti
o
n
T
e
c
h
n
iq
u
e
f
o
r
OFDM
Co
m
m
u
n
ica
ti
o
n
S
y
ste
m
s
,
”
M
.
S
c
.
T
h
e
sis.
Na
ti
o
n
a
l
In
st
it
u
te
o
f
T
e
c
h
n
o
lo
g
y
,
Ro
u
rk
e
la,
2
0
0
9
.
[7
]
M
in
g
X
iao
,
“
No
v
e
l
P
re
d
isto
rt
io
n
T
e
c
h
n
iq
u
e
s f
o
r
RF
P
o
w
e
r
Am
p
li
fiers
”
,
T
h
e
Un
iv
e
rsit
y
o
f
Bir
m
in
g
h
a
m
,
2
0
0
9
.
[8
]
F
re
d
e
rick
H.
Ra
a
b
,
P
e
ter
As
b
e
c
k
,
S
tev
e
Crip
p
s,
P
e
ter
B.
Ke
n
in
g
to
n
,
Z
o
y
a
B.
P
o
p
o
v
ic,
Nic
k
P
o
th
e
c
a
r
y
,
Jo
h
n
F.
S
e
v
ic
a
n
d
Na
th
a
n
O.
S
o
k
a
l,
“
RF
a
n
d
M
icro
w
a
v
e
P
o
w
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tere
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sis.
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