# PCCC Decoder Combo- OFDM

**URL:** <https://www.ruby-forum.com/t/pccc-decoder-combo-ofdm/242554>\
**Category:** GNU Radio\
**Created:** [July 2, 2015, 8:24am UTC](https://www.ruby-forum.com/t/pccc-decoder-combo-ofdm/242554 "2015-07-02T08:24:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![musicdenotation](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ea666f/32.png) [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\
**Post date:** [July 2, 2015, 8:24am UTC](https://www.ruby-forum.com/t/pccc-decoder-combo-ofdm/242554/1 "2015-07-02T08:24:21Z")

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Hello,  
I am usin OFDM Modulation and demodulation along with PCCC encoder and  
PCCC decoder… I am using QPSK modulation in OFDM. But Pccc decoder  
combo  
also using Demodulation parameter Constellation and Dimension. is it  
mean  
that demodulating twice? how can I use OFDM Block with PCCC decoder?  
Can anybody help me? I am new to this.

Thanks in Advance.

With Regards,  
Salija.P