Hi Greg True diversity (2 x omni) receiver wont fix the long echo scenario.... it is likely in that scenario both diversity branches will cop the same (bad) delay profile .
However it would likely improve the performance if there was a very high level of local multipath, as such decorrelating the two antennas. That is to say, there would be a long delay profile applied to both antennas, and there would also but, superimposed, a short delay (local multipath) delay profile. If you are lucky, the two antennas will see a different composite delay profile. It would not improve the performance in a low local multipath dominant two tap local delay scenario like rural/farmland. There are some other mitigation strategies. 1) dynamic directivity by use of a steerable antenna, there at least two antennas are used in a beam steering scenario, and the strong (trouble) reflections are nulled. 2) reduce the symbol rate/ reduce the SNR requirement cheers On 18/09/2017 7:19 PM, Gregory Maxwell wrote: > On Mon, Sep 18, 2017 at 9:14 AM, glen english <g...@cortexrf.com.au> wrote: >> The only real fix is slowing down the symbol rate. > A true diversity receiver is also a real fix. > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2