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Topic: commBCHEncoder/commBCHDecoder
Replies: 33   Last Post: Dec 29, 2012 11:18 AM

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Bahman

Posts: 9
Registered: 4/12/11
Re: commBCHEncoder/commBCHDecoder
Posted: Jul 16, 2012 2:04 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

"Fulus " <case28@gmail.com> wrote in message <jtvqk3$pdo$1@newscl01ah.mathworks.com>...
> Hello,
>
> Thank you so much for the initialization you sent me, I have a better understanding now, the BCH is encoding well now. However, the LDPC is a bit of a problem. after the bchecoding the ldpc encoder returns that; ''Input must be a column vector of length K''. I then reshapes the output bchfec - xsym=reshape( bchfec,length( bchfec)/k,k);
>
> making it frame based column vectors of lenght N_BCH as input to the ldpc encoder. this now returns a diff error which I do not understand
>
> Error using LDPCEncoder/step
> Multichannel operation is not supported.
>
> Error in DVBS2_a (line 54)
> FECFrame=step(hEnc,xsym);
>
> I am looking into any method to "Split Multichannel Frame-Based Signals into Individual Signals". I have had little or no success on it. I kindly would love ur input on how to go about this.
>
> Thank you


Hi dear Fulus

There is no need to reshape only invert the out put of bch encoder
Suppose that the output of bch is this:
encodedData = step(EncoderBCH, data);
then you invert it
encodedData=encodedData';
then
codeword = encode(henc, encodedData);
codeword will be your LDPC FECFRAME

Bahman


Date Subject Author
12/18/10
Read commBCHEncoder/commBCHDecoder
Spiros
12/20/10
Read Re: commBCHEncoder/commBCHDecoder
Ethem
12/20/10
Read Re: commBCHEncoder/commBCHDecoder
Spiros
3/2/11
Read Re: commBCHEncoder/commBCHDecoder
Adam
3/4/11
Read Re: commBCHEncoder/commBCHDecoder
Spiros
4/12/11
Read Re: commBCHEncoder/commBCHDecoder
Bahman
4/15/11
Read Re: commBCHEncoder/commBCHDecoder
Spiros
6/2/11
Read Re: commBCHEncoder/commBCHDecoder
allice
5/22/11
Read Re: commBCHEncoder/commBCHDecoder
Ratty
4/12/11
Read Re: commBCHEncoder/commBCHDecoder
Bahman
6/23/12
Read Re: commBCHEncoder/commBCHDecoder
Fulus
6/23/12
Read Re: commBCHEncoder/commBCHDecoder
Fulus
6/24/12
Read Re: commBCHEncoder/commBCHDecoder
Bahman
6/25/12
Read Re: commBCHEncoder/commBCHDecoder
Fulus
7/2/12
Read Re: commBCHEncoder/commBCHDecoder
Fulus
7/3/12
Read Re: commBCHEncoder/commBCHDecoder
Bahman
7/15/12
Read Re: commBCHEncoder/commBCHDecoder
Fulus
7/16/12
Read Re: commBCHEncoder/commBCHDecoder
Bahman
7/16/12
Read Re: commBCHEncoder/commBCHDecoder
Fulus
7/17/12
Read Re: commBCHEncoder/commBCHDecoder
Bahman
8/14/12
Read Re: commBCHEncoder/commBCHDecoder
Fulus
8/14/12
Read Re: commBCHEncoder/commBCHDecoder
Bahman
8/15/12
Read Re: commBCHEncoder/commBCHDecoder
Fulus
8/16/12
Read Re: commBCHEncoder/commBCHDecoder
Bahman
8/22/12
Read Re: commBCHEncoder/commBCHDecoder
Ed MrTz
8/22/12
Read Re: commBCHEncoder/commBCHDecoder
Bahman
8/22/12
Read Re: commBCHEncoder/commBCHDecoder
Ethem Sozer
8/25/12
Read Re: commBCHEncoder/commBCHDecoder
Ed MrTz
12/29/12
Read Re: commBCHEncoder/commBCHDecoder
Ed MrTz
5/14/11
Read Re: commBCHEncoder/commBCHDecoder
Akilan
6/28/11
Read Re: commBCHEncoder/commBCHDecoder
Leonardo O. Iheme
7/4/11
Read Re: commBCHEncoder/commBCHDecoder
Leonardo O. Iheme
12/7/11
Read Re: commBCHEncoder/commBCHDecoder
Brian
12/7/11
Read Re: commBCHEncoder/commBCHDecoder
Brian

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