Subscribe here to receive similar articles over e-mail whenever Krishna Pillai publishes an article on his site. The article compares various digital modulation schemes like BPSK, QPSK, PAM, 16PSK, ...

In the last years, a major transition from analog to digital modulation techniques has occurred and it can be seen in all areas of wireless communication, satellite and cellular systems. This paper ...

In modern communication systems, modulation is a key function that embeds the baseband signal (information) into a carrier wave so that it can be successfully broadcasted through a medium such as air ...

The present invention relates to an AFC circuit for satellite digital television broadcasting, more particularly to an AFC circuit, carrier recovery circuit and receiver for regenerating a carrier ...

The CMX7146 generates precise baseband analogue in-phase and quadrature signals with programmable signal filtering. This generates with high accuracy a signal ready for transmission and suitable for ...

Update (July 29, 2013): The spectrum recorded by the German Aerospace Center researchers appears to be consistent with a combination of BPSK(1) and BOC(5,2) modulation. This is the signal structure ...

In the last installment we looked at the ultrasonic hardware used in the development of a software designed ultrasonic data transmission system we are calling the SDU-X. In this second, and last, ...

Curtiss-Wright’s E-SOQPSK (Extensible SOQPSK) is a software-configurable, ultra-low-power Wi-Fi modulation scheme. Its waveforms offer some beneficial performance attributes for aeronautical telemetry ...