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Re: [Discuss-gnuradio] Punctured viterbi decoder?
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From: |
Ron Economos |
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Subject: |
Re: [Discuss-gnuradio] Punctured viterbi decoder? |
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Date: |
Mon, 20 Mar 2017 08:54:59 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0 |
In the "Error Coding" category of GNU Radio Companion, there are
Puncture and Depuncture blocks.
Here are some example parameters that work for DVB-S.
1/2 code rate = Puncture Size = 2, Puncture Pattern = 0b11
2/3 code rate = Puncture Size = 4, Puncture Pattern = 0b1101
3/4 code rate = Puncture Size = 6, Puncture Pattern = 0b110110
5/6 code rate = Puncture Size = 10, Puncture Pattern = 0b1101100110
7/8 code rate = Puncture Size = 14, Puncture Pattern = 0b11010101100110
Ron
On 03/20/2017 08:40 AM, Booth wrote:
Dear All,
I've been playing with the CCSDS27 viterbi decoder block which supports 1/2
rate. However we also need punctured codes like 3/4, 5/6, 7/8. Which block
should we use. Any recommendations?