Hi Martin,
Thank you.
1.Why the packet length should be larger than 32 bits?Can you explain it?
2.For example,I'm using the OFDM example in gnuradio.If i want to have a
working CRC,I must set the length>=4?Is 4 OK?
3.Is the packet length means that the original length(for example len=a) or the
length of data pass through CRC(len+4)?
Best regards,
zswx
At 2015-07-11 07:40:38, "Martin Braun" <martin.br...@ettus.com> wrote:
On 10 Jul 2015 01:38, "zs" <zswx_...@126.com> wrote:
> If I want to have a working CRC,what is the number of packet length at least?
32 bits.
> If someone don't want to use the Stream CRC32 block,Packet Header Generator
> still will add the crc at bit 24-31.Is it right?I suggest the code should add
> a function to judge before add the crc at bit 24-31.
We don't want to overload this generator with options. The idea is you subclass
the generator to tailor to your needs. See also the other generators.
> 3.For example,the OFDM example.If the transmitter don't add the crc32
> block,whether the receiver will display the warning "Detected an invalid
> packet at item %1%"?
No, that's precisely why we have it. However, the payload also has a crc.
Cheers,
M
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