Hi guys, I've already read and understand what does OFDM mean and what does it stand for and why we use it in our wireless technology today.
My question that I didn't understand is what does it mean number of "OFDM symbol per frame is 1 or two or 3 ..whatever"?
to clear more, lets assume I have pattern of data to transmit : [0 1 0] , and at each frame number of OFDM symbols is 2.
so what does it mean? is it mean the following claim on the data:
the data [0 1 0] will be stored in three frames and at each frame there's two OFDM symbols? so for is instance
0 is stored in frame and it has two OFDM symbols
1 is stored in frame and it has two OFDM symbols
0 is stored in frame and it has two OFDM symbols
So if that's true , what does it mean that 0 have two OFDM symbols? I need to understand what does it mean that certain frame has N OFDM symbols.



Appreciated for any help.

 

Hello,

This is what the wiki has to say about OFDM:
https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiplexing

Bertus

 

Hello,

This is what the wiki has to say about OFDM:
https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiplexing

Bertus

once again I understand the meaning of OFDM, but I didn't understand the terminology since saying the frame has 2 OFDM symbols or x OFDM symbols .. what does that actually mean ? here is my problem.

 

0 is stored in frame and it has two OFDM symbols
1 is stored in frame and it has two OFDM symbols
0 is stored in frame and it has two OFDM symbols

Where does that come from?

 

http://rfmw.em.keysight.com/wireless/helpfiles/n7617a/ofdm_signal_structure.htm
http://rfmw.em.keysight.com/wireles...ofdm/Content/ofdm_basicprinciplesoverview.htm

 

Where does that come from?

I just understand that it might be like this .. so maybe I concluded something is incorrect ..that's why I posted here my question .. could you help me to understand the terminology of saying "one frame has 4 OFDM symbols" for instance? what does that actually mean ..


thanks alot

 

http://rfmw.em.keysight.com/wireless/helpfiles/n7617a/ofdm_signal_structure.htm
http://rfmw.em.keysight.com/wireles...ofdm/Content/ofdm_basicprinciplesoverview.htm

I appreciate your links, much appreciated. but I'm still confused about the term "one frame has 4 OFDM symbols" ..what does that actually mean?

Once again I really understand the OFDM technique but what does that mean for instance one frame has 4 OFDM symbols?
I chose 4 OFDM per subframe or frame just as an example to understand actually what does that mean ..

 

I appreciate your links, much appreciated. but I'm still confused about the term "one frame has 4 OFDM symbols" ..what does that actually mean?

Once again I really understand the OFDM technique but what does that mean for instance one frame has 4 OFDM symbols?
I chose 4 OFDM per subframe or frame just as an example to understand actually what does that mean ..

Each OFDM symbol (from what I can tell there are several types in LTE) is the information encoding method for X number of data bits expressed into a RF signal for a period of time.

https://en.wikipedia.org/wiki/Symbol_rate

 

I appreciate your links, much appreciated. but I'm still confused about the term "one frame has 4 OFDM symbols" ..what does that actually mean?

Once again I really understand the OFDM technique but what does that mean for instance one frame has 4 OFDM symbols?
I chose 4 OFDM per subframe or frame just as an example to understand actually what does that mean ..

what do you understand is the difference / relationship between symbols and bits ?

 

what do you understand is the difference / relationship between symbols and bits ?

Assume I mean that symbol equal to 1 bit (assumption), so I can say one frame has 4 OFDM symbols is actually the same as saying one frame has 4bits? just want to understand.

Yes ofcourse I understand the difference between symbol and bits, symbol may have more than bit ..not always 1bit.

 

Assume I mean that symbol equal to 1 bit (assumption), so I can say one frame has 4 OFDM symbols is actually the same as saying one frame has 4bits? just want to understand.

Yes ofcourse I understand the difference between symbol and bits, symbol may have more than bit ..not always 1bit.

well thats a totlay confusing answer.
I was just asking at to what level of support you required,