Golay complementary sequences in 802.11ad
For part (a), I discovered that the IEEE 802.11 protocol doesn't recommend adding auto-correlations of $Gu_{512}$ and $Gv_{512}$. Instead the correct method is to autocorrelate the first 256 bits of each of these sequences with the next 256 bits. So, $Gu_{512}$ and $Gv_{512}$ are not complementary Golay sequences themselves. But, essentially, both $Gu_{512}$ and $Gv_{512}$ consist of two 256-bit Golay complementary pairs.

~ryan