The cyclic shift of PUCCH in NR channel is generated by MATLAB

One . Circular shift related protocols ：



Two pseudo-random sequence generation ：

Pseudo random sequences have been specifically mentioned in previous articles , If necessary, you can click the following article to view ： Add link description
Three below is pucch Channel generates pseudo-random sequence matlab Code ：

%--- according to 38.211 Inside 6.3.2.2.2 and 5.21 To write ---------------------------------------------------------------------
%N_CELL_ID Refers to the physical cell ID
%N_UL_symb It means a slot How many symbols 
%Nc yes 1600, The agreement has stated 
%Mpn This can be set by yourself , As long as it is longer than the length you need , This is larger than 14*20*8
%x10=1 The agreement has given 
%x11 yes 0   The agreement has given 
%ns Pointer is slot Number   
% This time m0 =0  mcs =0   These two values need to be different according to different formats 
N_CELL_ID = 55;
N_UL_symb = 14; 
Nc = 1600;
Mpn=3000;
m0 =0 ;
mcs =0;
% Generate pseudo-random sequence 
x10 =1;       
x11 = zeros(1,30); 
x1 = [x10 x11];% to x1 The first cycle of the sequence is initialized 
 % Generate x1 Sequence 
for i = 1:(Nc +Mpn - 31)           
    x1(i + 31) = mod((x1(i + 3) + x1(i)),2);
end
% ------------------------
cinit=N_CELL_ID;
x20 = de2bi(cinit);
len = length(x20);
x21 = zeros(1,31-len);        
x2 = [x20 x21];   % to x2 The first cycle of the sequence is initialized                     ;         
 %- Generate x2 Sequence 
for i = 1:(Nc + Mpn- 31)     
    x2(i + 31) = mod((x2(i + 3) + x2(i + 2) + x2(i + 1) + x2(i)),2);
end
% Generate pseudo-random sequence 
c_pseudo=zeros(1,Mpn);   
for i = 1: Mpn                       % Generate pseudo-random sequence c(i)
    c_pseudo(i) = mod((x1(i + Nc) + x2(i + Nc)),2);
end

n_cs=zeros(20,N_UL_symb);
a=zeros(20,N_UL_symb);
for ns = 0:19
    for l=0:13
        for i=0:7
            n_cs(ns+1,l+1)=n_cs(ns+1,l+1)+c_pseudo(8*N_UL_symb*ns+8*l+i+1)*2^i;
        end
          a(ns+1,l+1) =mod(n_cs(ns+1,l+1)+m0+mcs,12);
    end
end