Anritsu FAQs
In the MX860805A/MX860905A software, what is the difference of PI/4 DQSK and the PI/4 Shift QPSK?
PI/4 DQSK(Differential QPSK) and the PI/4 Shift QPSK are the same. PI/4 Shift QSK is used by such standards as ARIB STD-28(PHS) and PI/4 DQPSK is used by IS-136 (TDMA). Another difference is that the QPSK modulations has four symbols and DQPSK with Differential coding has eight symbols.
