Can oqpsk be realized by using PLL?

[ddt694]

I saw somebody who want to realize oqpsk modulation by using PLL,
but he failed. he told me that the PLL-oqpsk modulation has been generated, but the i q phase error is too big--about 10 degree.

I know, in general, we use iq modulator to realize the oqpsk modulation.
Can oqpsk be realized by using PLL?


regards
ddt694

 

[mreza1355]

yes why not.
you can realize the oqpsk by PLL and the 90 degree will be more accurate when you use PLL.

Regards