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From: | George Nychis |
Subject: | [Discuss-gnuradio] GMSK Gaussian filter byte alignment? |
Date: | Wed, 31 Oct 2007 18:21:37 -0400 |
User-agent: | Thunderbird 2.0.0.6 (X11/20071022) |
Hey all,I've been playing around with GMSK and reading through the code of the processing blocks. I see that the dot product code for the Gaussian filter is optimized such that it requires the data be 16-byte aligned. Where does this alignment actually occur in the processing chain?
On the modulation path, the flow is NRZ->GF->FM: gr_bytes_to_syms()->gr_firdes::gaussian()->gr_frequency_modulator_fc()I'm assuming the data coming out of gr_bytes_to_syms() is not 16-byte aligned, yet the data that comes in to the Gaussian filter is 16-byte aligned. So, where does this alignment actually occur?
Thanks! George
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