modulación dpsk

7/23/2019 Modulacin DPSK

1/19

MODULACIN PORCORRIMIENTO DE FASEDIFERENCIAL DPSK JOSU ECHEVERRA VARGAS

MARCO ANTONIO FLORES LPEZ EDUARDO MARTN REYES GALVN


2/19

DPSK(DIFFERENTIAL PHASE SHIFT KEYIN

Es u! "#$%! !&'$! %#u&!*+, +-+'!& .

L! +"#$%!*+, '$!! /+!$+! s'! *#'+! &!

+"$*+! "!s0 '$ #s &%'#s su*s+1#s0 #

"!s !/s#&u'!.


3/19

N# s *s!$+# $*u2$!$ u! 2#$'!#$! *#3$'

S $'!$! u &%'# s4!&+5!*+, 6 s *#%2!$!

s+-u+' &%'# $*+/+# s4!&+5!*+,0 &! +"$

"!s '$%+! & s'!# &,-+*#.


4/19


5/19


6/19

MODULADOR

DPSK C#%2u$'! 7NOR0 *#%2!$! &!

'$!! !'#s *# & /+' s!&+# &&!

S us! u %#u&!#$/!&!*!# # s +'$#u*

&! 2#$'!#$!

L! s!&+! & *+$*u+'# &,-+*#

.


7/19

MODULADOR DBPSK


8/19


9/19

DEMODULACIN DE DPSK


10/19

L! s4!& $*+/+! &&-! !& $*2'#$ '!'# "#$%! +$*'! *#%# ! '$!19s u *+$*u+'# # su"$ u $'!$# u '+%2# u /+'. L!s #ss4!&s s +'$#u* & %#u&!#$ s:*$## # %u&'+2&+*!#$ 6 &!s4!& $su&'!' !'$!1+s! u ;&'$# 2!s# /!


11/19

Su2#+# =u # >+s'! !'u!*+,0 &! s4!& $*+/+!s >!*'!%' 1DPSK0 Cu!# &! s4!& $*+/+! s%u&'+2&+*! %#u&!#$ s:*$## 2#$ &! =u 3! su"$+u $'$!s# u '+%2# /+'0 T0 s #/'+ ! &! s!&+! s' %#u&!#$ &! s4!&?


12/19

Es'! s4!& 2!s! 2#$ u fltro paso bajo +s4!# %## =u&+%+ '## *#%2#' 2#$ *+%! &! "$*u*+! &! s4!&2#$'!#$!0 2!$! #/'$ & 2$#u*'# .

C#%# s +;$ &! @&'+%! *u!*+,0 2!$! =u &! s4!& s!&+!

s! '! -$! *#%# s! 2#s+/&0 / &-+$s u '+%2# T '!& =u

As:0 &! "$*u*+! 2#$'!#$! / s$ &-+! %## =u &'+%2# u$!*+, u /+' s u @%$# '$# 1*s %+#s *+*s u$!*+,.


13/19

L! 1'!

s 2u +%2&%'!$. E &! DPSK # s *s+'!

*+$*u+'# $*u2$!*+, 2#$'!#$!.

U! s1'!

!&*!5!$ &! %+s%! "$*u*+! $$#$s =u &! PSK

!/s#&u'!.


14/19

RECUPERACIN DE RELOJ

L#s !'#s $*u2$!#s s %#$! %+# /+' '+%2#6 ! *#'+u!*+, s *#%2!$! *# s !'#s #$+-+!&s u *+$*u+'# 7OR. L! "$*u*+! & $< =u s

$*u2$! *# s' %9'## s +-u!& ! &! "$*u*+! !'#s $*+/+#s0 f.


15/19

E& +!-$!%! %us'$! &! $&!*+, '$ s !'#s 6 &! s+*$#+5!*+,& $< $*u2$!#. S 1 !&&: =u %+'$!s s !'#s $*+/+#s*#'-! u! *!'+! !2$*+!/& '$!s+*+#s (s*u*+!sB)0 s %!'+ & $< $*u2$!#. S+ s !'#s $*+/+#s 'u1+$!u 2$+## 2$#-!# D u#s # *$#s su*s+1#s0 s 2$$:! &

$< $*u2$!#. P!$! 1+'!$ =u s# su*!0 s !'#s S $1u&1 & >'$%# '$!s%+s+, 6 s 1u&1 ! #$!$ & >'$%# $*2*+,. L! %5*&! +'$#u* '$!s+*+#s (2u&s#s) &! s4!&/+!$+!0 =u us! u !&-#$+'%# 2$'$%+!#0 6 & #$!#$ us!& %+s%# !&-#$+'%# 2!$! &+%+!$ &!s '$!s+*+#s.


16/19

CRITERIOS PARA LA SELECCIN DE UNATECNICA DE MODULACIN

S+ & !*3# /!! s & 2!$%'$# %s+%2#$'!'0s s+s'%!s DPSK 6 PSK s# s %s!2$#2+!#s.

S+ & *#su%# 2#'*+! s &! %s+%2#$'!'0 ss+s'%!s %s !2$#2+!#s s# & PSK 6 & DPSK

S+ &! *#%2&


17/19

PROAILIDAD DE ERRORDE IT

E& $u+# !+'+1# &! '$!! s /&!*# 6-!uss+!#.

L! 2$'u$/!*+, &! "!s &! s4!&*#%2us'! 2#$ $u+# 1!$+! &'!%' '!&

"#$%! =u &! $"$*+! "!s ss*+!&%' u! *#s'!' s &+'$1! /!s!# s4!&+5!*+, 3!s'! &+'$1! !*'u!& s4!&+5!*+,.

E& #s*+&!#$ 2#$'!#$! & '$!s%+s#$ s

su;*+'%' s'!/& 2!$! =u &! "!s


18/19

P#$ u&'+%#0 &! 2$#/!/+&+! $$#$ 2!$! us+s'%! DPSK0 s' !! 2#$ &! s+-u+'

>2$s+,?


19/19

modulación dpsk

Documents