Question in F-OFDM

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