Tony Chuang <[email protected]> writes: >> >> <[email protected]> wrote: >> >> > From: Yan-Hsuan Chuang <[email protected]> >> > >> > Add support for doing IQK in firmware >> > >> > Signed-off-by: Yan-Hsuan Chuang <[email protected]> >> >> The commit log does not answer "Why?". What is IQK and how does it help? >> >> No need to resend, I can update the commit log but just let me know what to >> add. >> > > Ideally the RF component's I/Q vectors should be orthogonal, but usually they > are not. > So we need to calibrate for the RF components, ex. PA/LNA, ADC/DAC. > > And if the I/Q vectors are more orthogonal, the mixed signal will have less > deviation. > This helps with those rates with higher modulation (MCS8-9), because they > have more > strict EVM/SNR requirement. Also the better of the quality of the signal, the > longer it > can propagate, and the better throughput performance we can get.
I added this to patch 4 but there were some warnings so I had drop the patches. So please send v2 and remember to add this description to patch 4. -- Kalle Valo
