The most fundamental digital modulation techniques are based on keying: PSK (phase-shift keying): a finite number of phases are used. FSK (frequency-shift keying): a finite number of frequencies are used. ASK (amplitude-shift keying): a finite number of amplitudes are used.
Read moreWhat is a satellite modulator?
A satellite modem or satmodem is a modem used to establish data transfers using a communications satellite as a relay . A satellite modem’s main function is to transform an input bitstream to a radio signal and vice versa.
Read moreWhy are digital modulation techniques used in satellite communication?
The advantages provided by digital modulation techniques include: Better performance . Better Error detection and correction efficiency. Better Signal to noise ratio so less prone to interference or noise.
Read moreWhat are modulation techniques?
Modulation is the process of converting data into electrical signals optimized for transmission. Modulation techniques are roughly divided into four types: Analog modulation, Digital modulation, Pulse modulation , and Spread spectrum method .
Read moreWhich modulation is spectrally more efficient?
Explanation: MSK is spectrally more efficient than the other modulation schemes.
Read moreWhat is BPSK modulation technique?
Binary Phase-shift keying (BPSK) is a digital modulation scheme that conveys data by changing, or modulating, two different phase s of a reference signal (the carrier wave ) . The constellation points chosen are usually positioned with uniform angular spacing around a circle.
Read moreWhat is MSK in digital communication?
The minimum-shift keying (MSK) scheme is used in GSM, a pioneer and a widely-used digital cellular mobile system. MSK can be viewed as either a special case of binary continuous-phase frequency-shift keying (CPFSK) or a special case of OQPSK.
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