[Discuss-gnuradio] Fractional Resampler discards samples

[Andrej Rode]

Hey everyone, 

I'm trying to use the channel model block in between my transmitter and 
receiver to test with AWGN Conditions. In the channel model block my tap is 
one and epsilon also one. Now I recognised that the first three samples of my 
stream are lost and the length tag is propagated to the now first but formerly 
fourth tag.

I've noticed this 'problem' has its origin in the fractional resampler. The 
fractional resampler (with a resampling rate of 1 and a phase offset) also 
discards the first three samples and propagates the tag to the formerly fourth 
tag. Also in the output are 8 samples less than in the input but thats due to 
the 8-tap filter?

Is this intentional and the expected behaviour and did I miss something?

Help is very much appreciated.

Thanks, 
Andrej

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