[Tinyos-devel] 4bitle LinkEstimatorP.nc

[Andreas Köpke]

Hi, I'm wondering about the exponential weighted average implementation in the 
4bitle:

 void updateEETX(neighbor_table_entry_t *ne, uint16_t newEst) {
    ne->eetx = (ALPHA * ne->eetx + (10 - ALPHA) * newEst)/10;
}
here, the influence of newEst is limited to newEst/10 -- underestimating the 
etx.

I think it should round to nearest:

void updateEETX(neighbor_table_entry_t *ne, uint16_t newEst) {
    ne->eetx = (ALPHA * ne->eetx + (10 - ALPHA) * newEst + 5)/10;
}

Best, Andreas