# Question in F-OFDM

**URL:** <https://vccsforum.nt.tuwien.ac.at/t/question-in-f-ofdm/273>\
**Category:** Vienna 5G Link Level Simulator\
**Created:** [August 2, 2023, 10:19pm UTC](https://vccsforum.nt.tuwien.ac.at/t/question-in-f-ofdm/273 "2023-08-02T22:19:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Mohamed](https://vccsforum.nt.tuwien.ac.at/letter_avatar_proxy/v4/letter/m/d78d45/32.png) [@Mohamed](https://vccsforum.nt.tuwien.ac.at/u/Mohamed)\
**Post date:** [August 2, 2023, 10:19pm UTC](https://vccsforum.nt.tuwien.ac.at/t/question-in-f-ofdm/273/1 "2023-08-02T22:19:32Z")

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Dear Sir,

I have a question about F-OFDM class. Please can you tell me what is the difference between (obj.PHY.CyclicPrefixLength) and (obj.PHY.CyclicPrefixLengthFilter) and also what is the relation between (obj.PHY.CyclicPrefixLengthFilter) and (obj.PHY.FilterLengthTX) and (obj.PHY.FilterLengthRX).

Best regards  
Mohamed