thanks tom for your reply. as you told me to use fec api blocks i tried to use fec encoder and decoder blocks but still my output is not same as input. may be i am missing something while i am using these blocks. i have attached the image and .grc file of my flowgraph.
Hitesh On Mon, Jan 4, 2016 at 8:30 PM, Tom Rondeau <[email protected]> wrote: > On Fri, Jan 1, 2016 at 3:17 AM, Hitesh Kasera <[email protected]> > wrote: > >> Hi everyone, >> >> I am trying to use ccsds 27 encoder-decoder to transmit some data. The >> decoded data is not same as transmitted. As a source i am transmitting ones >> and zeros but after decoding sometimes i am receiving values which are >> greater than 1. i am not able to recognize where am i going wrong. if >> anyone has any idea please tell me. i have attached both grc file and png >> image of my flow graph. >> >> Best Regards, >> Hitesh >> > > > Changing the problem a bit, I'd recommend moving away from the CCSDS > encoder/decoder blocks and using the FEC API blocks, instead. See: > > http://gnuradio.org/doc/doxygen/page_fec.html > > The CC Encoder and CC Decoder are basically the CCSDS codes (you might > have to swap the two polynomials; I always forget off the top of my head > which is called which code here). > > Tom > >
fec_encoder_decoder.grc
Description: Binary data
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