top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

What is the content of the cyclic prefix ?

+2 votes
1,188 views
What is the content of the cyclic prefix ?
posted Dec 4, 2014 by Sridharan P

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button
In short it is the repetition of the end of the symbol
commented Dec 4, 2014 by Salil Agrawal
explain in detail?its contains repeated symbols only or any other data
commented Dec 4, 2014 by Sridharan P
Its repeat of end of symbol only, though it was used for OFDMA only initially but seems people started using the same for single carrier also.
commented Dec 4, 2014 by Salil Agrawal

1 Answer

+1 vote
 
Best answer

Check the following image, should clear the doubt.

CP with end signal copied

answer Dec 4, 2014 by Salil Agrawal
yes.one symbol having (0.5/7 ms) and (15kHz) in that maximum we can send 15kHz means? how much Hz cyclic prefix can get?
commented Dec 4, 2014 by Sridharan P
I could not get you, can you ask in detail??
commented Dec 4, 2014 by Salil Agrawal
In normal cyclic prefix .In one slot we have 7 ofdm symbols.
7 ofdm symbols having 7cyclic prefix.
1 prefix having 160 samples others are 140 samples between data 2048 * 7samples.
my  question is samples are 0's and 1's?whether its true or false.
samples is nothing but symbols?
commented Dec 5, 2014 by Sridharan P
Symbol and samples are different, Please go through the following doc which describe in detail about the phy layer.
http://www.tsiwireless.com/docs/whitepapers/LTE%20in%20a%20Nutshell%20-%20Physical%20Layer.pdf
commented Dec 5, 2014 by Salil Agrawal
Similar Questions
0 votes
5G: How filter OFDM (F-OFDM) is different from cyclic prefix OFDM (CP-OFDM) ?

I came to know 5G radio is going to use something called Filter OFDM unlike 4G radio which was using cyclic prefix OFDM.

...