bpsk_molding.m

来自「BPSK调制源码。原创。参数开放。绝对宜用。请大家给意见」· M 代码 · 共 32 行

%%%%%%%%%%%%%%%%%%%%%   此函数为 BPSK 码元  %%%%%%%%%%%%%%%%%%%%
function BPSK=BPSK_molding(sequence,points_num)  %%%%  sequence为输入的码元序列，points_num为一个码元的采样点数
  
seq_len=length(sequence);

% ----------------------------
% Step Zero - 将输入序列中的正数变为1，将0和负数变为-1
% ----------------------------
for i=1:seq_len
    if sequence(i)<=0
        sequence(i)=-1;
    elseif sequence(i)>0
        sequence(i)=1;
    end;
end;

for i=0:1:points_num-1
    wave(i+1)=sin(i./points_num.*2.*pi);
end;
% ----------------------------
% Step One -  生成最终结果，每个BPSK码长度为points_num
% ----------------------------
for i=1:seq_len
    for j=1:points_num
         result_code((i-1).*points_num+j)=sequence(i)*wave(j);
    end;
end;

% ----------------------------
% Step Two -  返回值
% ----------------------------
BPSK=result_code;     %返回曼彻斯特码