You can use Modulation Toolkit 2.0 for LabVIEW to generate PSK signals (including BPSK and QPSK) using common PSK configuration parameters.
http://sine.ni.com/apps/we/nioc.vp?lang=US&cid=12855
You can use resampling tools present in Modulation Toolkit if you need to resample the generated data to a different sample rate for your third party AWG.
In addition, Modulation Toolkit integrates seamlessly with NI's high-speed signal sources, including the NI 5421 for PXI:
http://sine.ni.com/apps/we/nioc.vp?cid=12472〈=US