On Mar 9, 4:41�am, "mashhur" <mashh...@yahoo.com> wrote:
> Hi all members of DSP!
> I am getting familiar to OFDM because of you guys! Thanks a lot!
>
> in frequency domain subcarriers may overlap each other, however
> transmitting information doesn't mix. What is the reason?
> could somebody explains me, I appreciate a feedback!
> thanks again!
Roughly speaking, as long as the length of the window and
the spacing of the tones are chosen such that the center
of each tone is in zero-crossings of all other tones, then
there is no inter-carrier interference.
More precisely, this has to do with the algebra of the
Discrete Fourier Transform. It operates on circular signals.
Hence if you use the correct amount of cyclic prefix, you
get orthogonality.
Julius
Reply by mashhur●March 9, 20092009-03-09
Hi all members of DSP!
I am getting familiar to OFDM because of you guys! Thanks a lot!
in frequency domain subcarriers may overlap each other, however
transmitting information doesn't mix. What is the reason?
could somebody explains me, I appreciate a feedback!
thanks again!