> > <yhchuang@xxxxxxxxxxx> wrote: > > > From: Yan-Hsuan Chuang <yhchuang@xxxxxxxxxxx> > > > > Add support for doing IQK in firmware > > > > Signed-off-by: Yan-Hsuan Chuang <yhchuang@xxxxxxxxxxx> > > 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. Yan-Hsuan
