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QPSS taking very long time to converge.

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Hi.

I am simulating I/Q mixer using QPSS. QPSS is going through many stabilisation iterations (about 60) with conversion norm changing very little between these iterations. Once Newton iterations start, QPSS converges with 2 iterations.

But, due to the large number of stabilisation iterations, QPSS takes a very long time to complete. Can anyone point out why QPSS could be going through so many stabilisation iterations?

with regards,
Sandeep
 

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