Hi all ,
Iam using rf communications fixed point lib 3.0's mpsk pll demodulator subvi to demodulate qpsk signal . but the problem is one out of three succesive runs the receiver output constellation is rotating i.e iam getting circle . when it locks to the input output constellation is acurate.
Q1. Am i the only one getting this problem or is this a common problem?
Q2. How to overcome the problem?