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ER

POWERTYPEca
bedborli
earIfPOWERTYPEisdbthe

SNR

ismeasuredi
dBa
dSIGPOWERismeasuredi
dBWIf
POWERTYPEis

li
earthe
SNRismeasuredasaratioa
dSIGPOWERis
measured

i
Watts


ExampleTospecifythepowerofXtobe0dBWa
dadd
oise
toproduce

a
SNRof10dBuse

Xsqrt2si
0pi86pi

YAWGNX100


ExampleTospecifythepowerofXtobe0dBWsetRANDNto
the1234th

statea
dadd
oisetoproducea
SNRof10dB
use

Xsqrt2si
0pi86pi
f
YAWGNX1001234


ExampleTospecifythepowerofXtobe3Wattsa
dadd
oise
to

produceali
earSNRof4use

Xsqrt2si
0pi86pi

YAWGNX43li
ear


ExampleTocauseAWGNtomeasurethepowerofXsetRANDNto
the

1234thstatea
dadd
oisetoproducea
li
earSNRof4use

Xsqrt2si
0pi86pi

YAWGNX4measured1234li
ear


RemoveGuard
I
tervals


i
putSymCh1NumSubcNumCPNumLoopoutput
SymDeCPNumSubcNumLoop
SymDeCPzerosNumSubcNumLoop
SymDeCPtmpreshapeSymChNumSubcNumCPNumLoop
SymDeCPSymDeCPtmpNumCP1Sy
cDelayNumAddPrefixSy
cDelay


FFT


i
putSymDeCPNumSubcNumLoopoutputSymFFTNumSubcNumLoop
SymFFTfftSymDeCPNumSubc1


MakeDecisio
I
cludeDeQAM

fSymFFTNumSubcNumLoopoutputSymDecNumSubcNumLoopSymDeczerosNumSubcNumLoopSymEqtmp1SymFFT1iSymFFTNumSubc21SymEqtmp2NumSubc2SymFFT2NumSubc2form1NumLoop
for
1NumSubc2RealrealSymEqtmp
mImagimagSymEqtmp
m
ifabsReal1absReal1SymDec2
1m1
elseSymDec2
1m0
e
d
e
de
d
ifabsImag1absImag1SymDec2
m1
elseSymDec2
m0
e
d

Testbylavabi
A
otherwaytoDeQAMQAMTable1i1i1i1i001i011i101i111iTestSymDeczerosNumSubcNumLoopTestSymEqtmp1SymFFT1iSymFFTNumSubc21TestSymEqtmp2NumSubc2SymFFT2NumSubc2
fTestSymEqtmp1reshapeTestSymEqtmp1NumSubcNumLoop2mi
_dzerossizeTestSymEqtmp1mi
_dddzeros1NumSubcNumLoopdzeros41mi
_i
dex0forii11NumSubcNumLoop2
forjj14djjabsTestSymEqtmpiiQAMTablejj
e
dmi
_diimi
_i
dexmi
d
YIMINXretur
sthei
dicesofthemi
imumvaluesi
vectorI
switchmi
_i
dexcase1
mi
_ddd2ii10mi
_ddd2ii0
case2mi
_ddd2ii10mi
_ddd2ii1
caser
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