Transmit and receive qpsk using adalm-pluto on matlab simulink software

Hello. I cannot recover the signal after the Adalm-pluto receiver block. I saw on the internet that before synchronizing the carrer, the phase signal they got was circular and mine got a very bad signal. Can you help me?

The frequency used is 50KHz, the sampling frequency is 200KHz

[Umeshraja]

Assuming that phase noise is present, The constellation looks like the signal is affected by phase noise. Have you considered removing in the receiver part?

Answer 1

[Nhut]

The signal after the adalm-ploto receiver block has not gone through any synchronization blocks yet. I see online that person hasn't put through any synchronization block yet