[WEBINAR] The New Normal: Dealing with the Reality of an Unsecure World

Phase-Shift Keying (PSK)

Definition - What does Phase-Shift Keying (PSK) mean?

Phase-shift keying (PSK) is a digital modulation scheme based on changing, or modulating, the initial phase of a carrier signal. PSK is used to represent digital information, such as binary digits zero (0) and one (1).

PSK is typically applied in wireless local area networks (WLAN), Bluetooth technology and radio frequency identification (RFID) standards used in biometric passport and contactless payment systems.

Techopedia explains Phase-Shift Keying (PSK)

The three primary digital modulation types - PSK, frequency-shift keying (FSK) and amplitude-shift keying (ASK) - modify base signals for data communication. PSK conveys data by modifying the phase of a signal.

Two common PSK types are as follows:
  • Quadrature Phase-Shift Keying (QPSK): Uses four phases to encode two bits per symbol.
  • Binary Phase-Shift Keying (BPSK): Simplest PSK type. Uses two phases separated by 180 degrees.
More complex PSK schemes may use more than four phases for data transmission. However, eight is the maximum.

Techopedia Deals

Connect with us

Techopedia on Linkedin
Techopedia on Linkedin
"Techopedia" on Twitter

Sign up for Techopedia's Free Newsletter!

Email Newsletter

Join thousands of others with our weekly newsletter

Free Whitepaper: The Path to Hybrid Cloud
Free Whitepaper: The Path to Hybrid Cloud:
The Path to Hybrid Cloud: Intelligent Bursting To Amazon Web Services & Microsoft Azure
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.