English: Timing diagram for DBPSK and DQPSK. The binary data stream is above the DBPSK signal. The individual bits of the DBPSK signal are grouped into pairs for the DQPSK signal, which only changes every Ts = 2Tb.
Italiano: Diagramma temporale di segnali DBPSK e DQPSK. Il flusso di dati binario è riportato sopra al segnale DBPSK. Nel segnale DQPSK, i singoli bit usati dal segnale DBPSK sono raggruppati a due a due e il segnale cambia ogni Ts = 2Tb.
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