I conducted a research on how to implement a QPSK demodulator. I found out the Quadrature QPSK demodulation technique which seems very straight forward. Here is what i understood from the explanati...
This demodulator is suitable for the quadrature phase-shift keying (QPSK) modulator previously published by the same author, "Novel Low-Cost QPSK Modulator Needs No Adjustments" (electronic design, ...
Design-Reuse: Zaltys ISDB-T Demodulator Core brings Digital Broadcast BER Testing Capability to Anritsu Spectrum Master and Cell Master Handheld Analyzers
The Zaltysâ„¢ 3-Layer ISDB-T High Performance Demodulator core from Silicon Infusion has been used by Anritsu to enhance its latest digital broadcast analyser products Watford, United Kingdom - ...
Zaltys ISDB-T Demodulator Core brings Digital Broadcast BER Testing Capability to Anritsu Spectrum Master and Cell Master Handheld Analyzers
The main purpose of OQPSK, $\pi/4$-QPSK and other variants is to prevent the signal frequently transition through zero. When a digitally modulated signal stream input to a power amplifier passes from one symbol -- through zero -- towards another symbol, it is like turning it off and on, again and again. The consequence of switching the input to any device on and off at a very fast rate is ...
White Gaussian noise is half phase noise and half amplitude noise. The carrier tracking loop will track out the close in phase noise. I agree the higher order modulations above QPSK require better phase noise for same performance but don’t think that is the case with BPSK vs QPSK for the same arguments made with BER of BPSK vs QPSK: you can treat QPSK as two independent BPSK waveforms that ...