need syntax

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shriya
shriya 2012-2-29
need syntax for adding and removing cyclic prefix
  2 个评论
Oleg Komarov
Oleg Komarov 2012-2-29
http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer
Walter Roberson
Walter Roberson 2012-2-29
See also Sana's identical question,
http://www.mathworks.com/matlabcentral/answers/30436-how-to-add-cyclic-prefix-i-want-codings-to-add-it

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UJJWAL
UJJWAL 2012-2-29
Hi, Since you mentioned that you just have to add the cyclic prefix, I am writing a code to add the cyclic prefix. The code can be shortened further. I have written in this way just for step-by-step illustration.
clc;
clear all;
length_message = 100;
message = randint(1,length_message,4); %Assuming QPSK symbols
length_cyclic = 20;
starting = length_message - length_cyclic + 1;
cyclic_prefix = message(starting : end);
prefixed = horzcat(cyclic_prefix,message);
The removal of Prefix I leave on you. It is quite elementary and involves just matrix indexing. Accept the answer if you find it useful

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