nextrow.m

一些奇偶校验矩阵的构造-matlab 消除四环

% function nextRow(tooLong, M)
%   Prasanna Sethuraman, March 2004

function rowNew = nextRow(thisRow, tooLong, MAXTOOLONG, M)

if tooLong > MAXTOOLONG
    rowNew = thisRow + 1;
    if rowNew > M
        rowNew = 1;
    end;
    % tooLong
else
    rowNew = floor(rand*M)+1;
end;