M-ary modulation

1. What is M-ary modulation?
2. What are the advantages of M-Ary modulation?
3. What is M-ary QPSK?
4. What is the difference between M-ary PSK and M-ary QAM signal?
5. What is M array encoding?

What is M-ary modulation?

An M-ary transmission is a type of digital modulation where instead of transmitting one bit at a time, two or more bits are transmitted simultaneously. This type of transmission results in reduced channel bandwidth. However, sometimes, two or more quadrature carriers are used for modulation.

What are the advantages of M-Ary modulation?

It has better performance than ASK and FSK. Minimal phase estimation error at the receiver. The bandwidth efficiency of M-ary PSK decreases and the power efficiency increases with the increase in M.

What is M-ary QPSK?

M-ary phase-shift keying (MPSK) is employed in some of the digital cellular standards and communication geostationary satellite systems. MPSK employs a set of M equal-energy signals to represent M equiprobable symbols.

What is the difference between M-ary PSK and M-ary QAM signal?

QAM is a modulation technique of both analog and digital signal and M-ary PSK is the type of phase shift keying where variations of multiple phases are used instead of two phases.

What is M array encoding?

This is the type of digital modulation technique used for data transmission in which instead of one bit, two or more bits are transmitted at a time. As a single signal is used for multiple bit transmission, the channel bandwidth is reduced.