make_orthotrain.m

来自「这个程序主要是实现空时编码的matlab编解码仿真。」· M 代码 · 共 33 行

function [train_seq1, train_seq2]=make_orthotrain(train_length)

%   [train_seq1, train_seq2]=make_orthotrain(train_length)
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%	Variable:	Explanation:
%	output1   - 
%   output2   -
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%	input1   - 
%   input2   -
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%   Short Theoretical Background for the Function:
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%   Creates two orthogonal training-sequences of length train_length.
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%%% Function part of simulation for Space-Time
%%% coding project, group Grey-2001.
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%   Author: 
%   Date: 
%   Version: 
%   Revision (Name & Date & Comment):
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train_seq1 = random_training(train_length);
train_seq2 = train_seq1;
train_seq2(1:2:end) = abs(train_seq1(1:2:end) - 1); % Inverses every second bit

% figure(20), subplot(1,2,1), plot(xcorr(train_seq1,train_seq1)), subplot(1,2,2), plot(xcorr(train_seq2,train_seq2));