China just pulled off a deep-sea messaging feat that could shift how navies communicate underwater. The 600-kilometer ...

Just like it says on the tin, it’s phase shift keying, and a proper implementation uses a phase detection circuit or something similar. [Craig] thought it would be fun to build an analog BPSK31 ...

Abstract: This paper describes a coherent optical receiver for demodulating optical quadrature phase-shift keying (QPSK) signals. At the receiver, a phase-diversity homodyne detection scheme is ...

The simplest phase modulation, called Binary Phase Shift Keying (BPSK), uses two phases to encode two binary digits. Tx: The BPSK modulator is implemented using an input data set (0 and 1) which is ...

These downlinks contain satellite position data, orbital elements, uplink/downlink channel info, and encrypted user messages. The STX downlinks are modulated using Symmetrical Differential Phase Shift ...

“With our new 4D binary phase-shift keying, or BPSK, modulation format, an information bit can still be correctly detected at the receiver even with a very small number – about four – of light ...

The following four modulation types are most commonly used in digital communication: the binary phase-shift keying (BPSK), binary frequency-shift keying, Gauss frequency-shift keying (GFSK), ...

Fundamental to all wireless communications is modulation, the process of impressing the data to be transmitted on the radio carrier. Most wireless transmissions today are digital, and with the ...