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Quadrature Phase Shift Keying
Binary Phase Shift Keying (BPSK)
The block diagram of a QPSK modulator is shown in Figure ! Binary data arriving at rate R b In M-ary PSK, M different phase shifts of the carrier are used to convey the information. The M = 2k signal waveforms, each representing k information bits, are represented as
Digital Modulation Techniques (ASK, FSK, PSK, BPSK
This post discusses Digital Modulation Techniques (ASK, FSK and PSK). The Waveforms, Definition and Basic Concepts of each digital modulation Techniques are discussed here. You will find here the basic difference between digital modulation and analog modulation. The digital modulation techniques are amplitude shift keying (ASK), frequency shift keying (FSK) and Phase shift keying (PSK).
Quadrature Phase Shift Keying
The Quadrature Phase Shift Keying (QPSK) is a variation of BPSK, and it is also a Double Side Band Suppressed Carrier (DSBSC) modulation scheme, which sends two bits of digital information at a time, called as bigits. Instead of the conversion of digital bits into a series of digital stream, it converts them into bit pairs. This decreases the data bit rate to half, which allows space for the
Symbol rate - Wikipedia
Symbols. A symbol may be described as either a pulse in digital baseband transmission or a tone in passband transmission using modems. A symbol is a waveform, a state or a significant condition of the communication channel that persists, for a fixed period of time.A sending device places symbols on the channel at a fixed and known symbol rate, and the receiving device has the job of detecting
Channel Capacity - an overview | ScienceDirect Topics
The set X represents the set of indices of constellation points in corresponding M-ary two-dimensional signal constellation diagram (such as M-ary phase-shift keying (PSK), M-ary quadrature-amplitude modulation (QAM) or M-ary polarization-shift keying (PolSK)), while Y represents the set of all possible channel outputs.
Online RF Course | Certification Course | RF and Wireless
Apr 22, 202116.2 M-ary PSK 16.3 QPSK and OQPSK 16.4 8-PSK and π/4-QPSK 16.5 EDGE Modulation 16.6 M-ary QAM 16.7 16, 32 and 64-QAM 16.8 Non-Linear Modulation Schemes 16.9 Frequency Shift Keying (FSK) 16 Minimum Shift Keying (MSK) 16 Supporting Notes 16 Module Quiz
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