生成m序列與gold序列.doc

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1、一、生成m序列function[mseq]=m_sequence(fbconnection);n=length(fbconnection);N=2^n-1;%m序列的長(zhǎng)度register=[zeros(1,n-1)1];%定義移位寄存器的初始狀態(tài)mseq(1)=register(n);%m序列的第一個(gè)輸出碼元fori=2:Nnewregister(1)=mod(sum(fbconnection.*register),2);%寄存器與反饋的模2和forj=2:n,newregister(j)=register(j-1);end;register

2、=newregister;%移位后的寄存器mseq(i)=register(n);%新的寄存器輸出endclearall;closeall;clc;fbconnection=[00101];%輸入本原多項(xiàng)式系數(shù)，從C1開(kāi)始m_sequence=m_sequence(fbconnection);stem(m_sequence);%對(duì)m序列繪圖axis([035-0.21.2]);gridon;二、生成gold序列functiongoldseq=g_sequence(connection1,connection2);msequence1=m_se

3、quence(connection1);%生成第一個(gè)m序列msequence2=m_sequence(connection2);%生成第二個(gè)m序列N=2^length(connection1)-1;%gold序列長(zhǎng)度f(wàn)ori=1:N;s=mod(msequence1+msequence2,2);%兩個(gè)m序列模二加產(chǎn)生gold序列g(shù)oldseq=s;endclearall;closeall;clc;connection1=[000011];connection2=[100111];goldseq=g_sequence(connection1,c

4、onnection2);stem(goldseq);axis([065-0.21.2]);gridon;