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QPSK Modulation (Real time experiment)
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1)The bandwidth of QPSK signal is ______ the bandwidth of BPSK signal.
  

2)The constellation diagram of QPSK has ______ points
  

3)QPSK sends ______ bits of digital information at a time.
  

4)The amount of radio frequency required to transmit QPSK reliably is ______ that required for BPSK signals. 
  

5)How many carrier frequencies are used in QPSK? 
  


  


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