try.m

小区初搜为GSM系统中的一个关键过程

function MS


Lh = 0;

% if Lh==1,
%   error('GSMsim-Error: Lh is constrained to be in the interval [1:4].');
% elseif Lh > 4,
%   error('GSMsim-Error: Lh is constrained to be in the interval [1:4].')
% end

% make initiating symbols
%
SYMBOLS=[ 1; j; -1 ; -j];
% 					
SYMBOLS=SYMBOLS(:,1)*j;
for n=1:Lh-1
  SYMBOLS=[[ SYMBOLS(:,1)*j , SYMBOLS ] ; [ SYMBOLS(:,1)*(-j) , SYMBOLS  ]];
end
%SYMBOLS(:,1),表示列
% NOW WE NEED TO ASSURE THAT THE STATE RELATED TO THE NUMBER ONE
% IS COMPLEX. THIS IS REQUIRED BY THE IMPLEMENTATION OF THE VITERBI 
% ALGORITHM.
%
% if isreal(SYMBOLS(1,1)),
%   SYMBOLS=flipud(SYMBOLS)
% end