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基于DSP的电力线载波OFDM调制解调器


?

coa3=w?wa3?2+1??

cob3=w?wb3?2+1??

sia3=w?wa3?2??

sib3=w?wb3?2??

wa1=wb1+ie?

for?ia0=j? ib0=j+1? ia0<n? ia0+=n1? ib0+=n1?

?//loop of two butterflies caculation

ia1=ia0+n2?

ib1=ib0+n2?

ia2=ia1+n2?

ib2=ib1+n2?

ia3=ia2+n2?

ib3=ib2+n2?

ra1=x?2?ia0?+x?2?ia2??

rb1=x?2?ib0?+x?2?ib2??

ra1=x?2?ia0?-x?2?ia2??

rb1=x?2?ib0?-x?2?ib2??

ta=x?2?ia1?+x?2?ia3??

tb=x?2?ib1?+x?2?ib3??

x?2?ia0?=ra1+ta? // x?2?ia0?

x?2?ib0?=rb1+tb? // x?2?ia0?

ra1=ra1-ta?

rb1=rb1-tb?

sa1=x?2?ia0+1?+x?2?ia2+1??

sb1=x?2?ib0+1?+x?2?ib2+1??

sa2=x?2?ia0+1?-x?2?ia2+1??

sb2=x?2?ib0+1?-x?2?ib2+1??

ta=x?2?ia1+1?+x?2?ia3+1??

tb=x?2?ib1+1?+x?2?ib3+1??

x?2?ia0+1?=sa1+ta?

x?2?ib0+1?=sb1+tb?

sa1=sa1-ta?

sb1=sb1-tb?

x?2?ia2?=?ra1?coa2+sa1?sia2?>>15?

x?2?ib2?=?rb1?cob2+sb2?sib2? >>15?

x?2?ia2+1?=?sa1?coa2-ra1?sia2? >>15?

x?2?ib2+1?=?sb1?cob2-rb1?sib2? >>15?

ta=x?2?ia1+1?-x?2?ia3+1??

ra1=ra2+ta?

rb1=rb2+tb?

《基于DSP的电力线载波OFDM调制解调器(第4页)》
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