Dear all,

I'm using ath9k_ar9003 type and ath9k_htc type.

And I'm studying how packet be transmitted through wifi driver.

I have researched from application layer to phy and I'm done to the MAC
layer.

However, I can't find any parts about data mapping to carriers.

As I know, for OFDM, there're several subcarrier in specific bandwidth and
user data(payload) fills subcarrier.

Which part responsible for mapping?

It is implemented at firmware level ?

Please help me !

Thanks.
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