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function DEC_X=judge(n,y1,y2)%最大似然检测子函数，y1，y2为待检测信号，n为nPSK调制系数，返回值为与待检测信号相隔最近的调制信号星座图中对应的信号值 DEC_X=zeros(1,2); for m=1:n d1(m)=abs(y1-exp(j*2*pi/n*(m-0.5))).^2;%求调制信号星座图中各调制信号与待检测信号的距离平方 d2(m)=abs

function DEC_X=judge(y)%最大似然检测子函数，y1，y2为待检测信号，nt为，返回值为与待检测信号相隔最近的调制信号星座图中对应的信号值 DEC_X=zeros(1,4); for i=1:4 for i=1:4 d(i,m)=abs(y(i)-exp(j*2*pi/4*(m-0.5))).^2;%求调制信号星座图中各调制信号与待检测信号的距离

function DEC_X=judge(y)%最大似然检测子函数，y1，y2为待检测信号，nt为，返回值为与待检测信号相隔最近的调制信号星座图中对应的信号值 DEC_X=zeros(1,4); for i=1:4 for m=1:4 d(i,m)=abs(y(i)-exp(j*2*pi/4*(m-0.5))).^2;%求调制信号星座图中各调制信号与待检测信号的距离

%___________________________常见窗函数的实现FIR滤波器_____________ %_______________________ 条件：N=40，wc=0.2*pi---------------- N=14; n=[0:1:N-1]; wc=0.2*pi; hd=ideal_lp1(wc,N); %_________________________

function ht3(h_axes1,N,mm,b1,Ws,Wp,Wph,Wsh,c) N=floor(N); %delta_w=2*pi/1000; %Ap=-(min(db(Wp*pi/delta_w+1:1:501))); %syms c; if mm==1 n=[0:1:N-1]; wc=((Ws+Wp)/2)*pi; Wcl=wc;

clear all; N=61; T1=0.1095; T2=0.598; alpha= (N-1)/2; l=0:N-1; wl= (2*pi/N)*l; Hrs=[zeros(1,22),T1,T2,ones(1,14),T2,T1,zeros(1,21)]; %理想振幅采样响应 Hdr=[0,0,1,1]; wdl=[0,0.75,0.75,1]; k1=

n=14; f=[0 0.4 0.5 1]; s=[1 1]; b=cremez(n,f,'lowpass',s); [h,w]=freqz(b); plot(w/pi,abs(h)); grid on;

%___________________________常见窗函数的实现FIR滤波器_____________ %_______________________ 条件：N=40，wc=0.2*pi---------------- N=10; n=[0:1:N-1]; wc=0.5*pi; hd=ideal_lp1(wc,N); %_________________________

function [pwav]=p_wav(x,a_pwav,d_pwav,t_pwav,li) l=li; a=a_pwav; x=x+t_pwav; b=(2*l)/d_pwav; n=100; p1=1/l; p2=0; for i = 1:n harm1=(((sin((pi/(2*b))*(b-(2*i))))/(b-(2*i))+(sin((pi/(2*b))

function [swav]=s_wav(x,a_swav,d_swav,t_swav,li) l=li; x=x-t_swav; a=a_swav; b=(2*l)/d_swav; n=100; s1=(a/(2*b))*(2-b); s2=0; for i = 1:n harm3=(((2*b*a)/(i*i*pi*pi))*(1-cos((i*pi)/b)))*c