Phase-shift keying (PSK) is a digital modulation process which conveys data by changing (modulating) the phase of a constant frequency carrier wave. The modulation is accomplished by varying the sine and cosine inputs at a precise time. It is widely used for wireless LANs, RFID and Bluetooth communication.

PSK uses prescribed phase shifts to define symbols, each of which can represent one, two, or more bits. Binary Phase Shift Keying (BPSK), illustrated in Figures 2.13.1 and 2.13.2, has two phase states and conveys one bit per symbol and is a relatively spectrally inefficient scheme, with a maximum (i.e. ideal) modulation efficiency of 1 bits/s/Hz.

2024年11月29日 · PSK（Phase Shift Keying）相位键控. PSK 是一种数字调制方式，通过改变 载波 信号的相位来传输信息。 每个符号对应一个固定的相位值，通常以离散的相位角度表示。 M-PSK：M 表示调制方式中使用的不同 相位 的数量。 每个符号用 log2(M) 个比特表示，因此 M 的值通常是 2 的幂次方。 BPSK （Binary PSK，二进制相位键控）：M = 2，使用 0 和 180 度的两个相位。 QPSK （Quadrature PSK，四相位键控）：M = 4，使用 0、90、180 和 270 度四个相 …

2024年11月12日 · Modern communications have increasingly adopted phase shift keying (PSK) to imprint digital messages onto a carrier. Now that we’ve covered amplitude shift keying (ASK) and frequency shift keying (FSK), this blog will round out …

Digital phase modulation is a versatile and widely used method of wirelessly transferring digital data. In the previous page, we saw that we can use discrete variations in a carrier’s amplitude or frequency as a way of representing ones and zeros.

Phase Shift Keying (PSK) is the digital modulation technique in which the phase of the carrier signal is changed by varying the sine and cosine inputs at a particular time. PSK technique is …

A digital modulation technique that transmits data by varying the phase of the carrier wave according to the digital modulating signal, is called Phase Shift Keying (PSK). The easiest form of PSK is BPSK i.e., binary phase shift keying.

2024年8月27日 · PSK is an efficient digital modulation scheme and can be simply implemented and demodulated using a phase-locked loop. The simplest scheme is binary PSK (BPSK) with two phase states.

2023年2月21日 · 8-PSK (Octagonal Phase Shift Keying) is a digital modulation scheme used in communication systems to transmit digital data over radio frequency channels. It is a type of phase shift keying (PSK) that uses eight different phases to encode the binary data.

2023年6月5日 · Phase Shift Keying (PSK) is a modulation scheme used in digital communication systems to transmit data by varying the phase of a carrier wave. It is a popular modulation technique in applications such as wireless communication, satellite communication, and digital audio broadcasting.