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prbs_iterator

PURPOSE ^

%

SYNOPSIS ^

function [outputseq,prbs]=prbs_iterator(prbs,iterations)

DESCRIPTION ^

% 
% (C) 2006 Muthiah Annamalai <muthuspost@gmail.com>
% 
% This function generates the output bits from the PRBS
% state, for the number of iterations specified.
%
% First argument is the PRBS structure obtained from prbs_generator.
% PRBS iterations is specified in the second argument.
% PRBS start state is taken from the prbs.sregs.
%
% Second argument of the output is PRBS structure with a new
% state. This allows error like: 
% 
% [ seq, prbs ] =  prbs_iterator( prbs, niterations );
% 
% while the state of the PRBS is updated.
% 
% Example: If you had a PRBS shift register like the diagram
% below with 4 registers we use representation by polynomial
% of [ 1 2 3 4], and feedback connections between [ 1 3 4 ].
% The output PRBS sequence is taken from the position 4.
% 
%  +---+    +----+   +---+   +---+
%  | D |----| D  |---| D |---| D |
%  +---+    +----+   +---+   +---+
%    |                 |       |
%    \                 /      /
%    [+]---------------+------+
%   1   +    0.D   + 1.D^2 + 1.D^3
%
% The code to implement this PRBS will be 
% prbs=prbs_generator([1 3 4],{[1 3 4]},[1 0 1 1]);
% x = prbs_iterator(prbs,15)
% 
% See Also: This function is to be used along with functions
% prbs_iterator, prbs_generator and prbs_sequence.
%

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:
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