format rat
%

sample=0.01;
%

t=[1:16]/16;
%

x=[t/128 (1+t)/128 (1+t)/64 (1+t)/32 (1+t)/16 (1+t)/8 (1+t)/4 (1+t)/2];
%

for i=1:128
    y(i)=x(129-i);
end
y=-y;
%

codebook=[y 0 x];
%

partition=codebook(1:256);