Hi Martin:
Thank you for your reply.And we know this block do "Estimate
channel and coarse frequency offset for OFDM from preambles".And the coarse
frequency offset is a integer.And it make the subcarriers cyclic shift.Just
illustration as this:
For example,we have 5 subcarriers,cfo=2.
Right subcarriers:s1,s2,s3,s4,s5
Wrong subcarriers:s4,s5,s1,s2,s3
So the channel estimation coefficients will not be zeros.Is it right?
Best regards,
zswx
At 2015-01-25 03:38:38, "Martin Braun" <martin.br...@ettus.com> wrote:
>On 01/24/2015 08:43 AM, zs wrote:
>> Now the taps only have values on taps[0]---taps[63-2],and taps[62]
>> taps[63] will be equal to zero.It means that the channel estimation have
>> value 0.It is wrong?
>
>They will be zero, and it's not wrong. What else should be written here?
>There's no useful information outside the frame.
>
>M
>
>
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