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[Discuss-gnuradio] Custom OFDM Carrier Allocator block
From: |
Alice Lo Valvo |
Subject: |
[Discuss-gnuradio] Custom OFDM Carrier Allocator block |
Date: |
Wed, 27 Sep 2017 17:36:46 +0200 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 |
Hi,
I have duplicated the OFDM Carrier Allocator block, because I would that the
occupied carriers parameter was not a variable but an input of the
block. I added this:
tagged_stream_block("allocator_alix",
gr::io_signature::make2(2, 2, sizeof(gr_complex),
sizeof(int)),
gr::io_signature::make(1, 1, sizeof(gr_complex) *
fft_len), len_tag_key),
d_fft_len(fft_len),
...
and I added right line in the .xml file.
When I execute the flow graph in GRC this is the error that I see:
gr::log :FATAL: allocator_alix0 - Missing a required length tag on port
1 at item #0
thread[thread-per-block[11]: <block allocator_alix (12)>]: Missing
length tag.
I don't understand what I have to do for solve this.
I have attached part of the flow graph.
Thanks in advance,
Alice
Schermata 2017-09-27 alle 17.34.31.png
Description: PNG image
- [Discuss-gnuradio] Custom OFDM Carrier Allocator block,
Alice Lo Valvo <=