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Clock and LO source for MIMO systems

Question asked by veera on Sep 5, 2012
Latest reply on Sep 6, 2012 by JLKeip

Should we derive Data converter's clocks and Mixer's LO from a common reference clock for a MIMO or any normal RF front end ?

Is it required to have single 20 MHz source for all DACS-ADCs and LO PLLs or can we have individual low jitter reference clock to each module?

 

In this document from Analog devices, They are suggesting to derive all clocks from single reference.

http://eetimes.com/design/microwave-rf-design/4199184/Synchronizing-NxN-MIMO-Basestations-to-an-External-Timing-Reference

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