olemus
digitaalse modulatsiooni süsteem
lairibasignaali edastuseks rööpsete osasignaalidena,
suure hulga lähedaste ortogonaalsete abikandjatega
= a digital multi-carrier modulation technique that distributes
the signal over a large number of orthogonal sub-carrier waves each individually modulated at low bandwidth

ülevaateid
https://rfmw.em.keysight.com//wireless/helpfiles/89600B/WebHelp/Subsystems/wlan-ofdm/content/ofdm_basicprinciplesoverview.htm

http://www.ieee.li/pdf/viewgraphs/introduction_to_orthogonal_frequency_division_multiplex.pdf

https://www.youtube.com/watch?v=kqkYUzYiLF4

http://bwrcs.eecs.berkeley.edu/Classes/EE225C/Lectures/Lec16_ofdm.pdf

https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiplexing

https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiple_access

https://www.eit.lth.se/fileadmin/eit/courses/ettn01/HT2-2017_Rusek/OFDM_lecture_notes_161115.pdf

https://silvustechnologies.com/why-silvus/technology/introduction-to-cofdm/