Which is better qpsk or qam

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Register Log in. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser. Thread starter senaydud Start date Jun 26, Status Not open for further replies. Hello, Which one do you prefer and Why?

Your main problem will be in reducing the "implementation loss" of the real decoding hardware. I was wondering that the case where you use QAM might be more convenient because you both make use of In-phase and Q-phase components of your transmitted signal.

QPSK is a harder to implement due to the 45 degrees phase difference between quadrature components. I'd prefer QAM as I said. Look at my constellations again, I think they are both QPSK, but with different constellation points.

Sorry for misleading you.. You say there are 45 degrees phase difference between components of QPSK. How come that 45 degrees introduce to our system of QPSK? May be a little Maths would work. Support Answers MathWorks. Search MathWorks. MathWorks Answers Support. Open Mobile Search. Trial software. You are now following this question You will see updates in your activity feed. You may receive emails, depending on your notification preferences. Show older comments.

Hana Elenany on 21 Jun Vote 0. Answered: Darel on 9 Jun Accepted Answer: Darel. Accepted Answer. Darel on 9 Jun Vote 1. Cancel Copy to Clipboard. Higher order PSK and QAM would be different, but they reduce to the same thing if you only have 4 constellation points. For more information about digital modulation, see Digital Modulation. More Answers 2.

Rahul Narendra Shanbhag on 18 Jun QAM can be thought of as a combination of amplitude-shift keying and phase-shift keying, since QAM converts two digital bit streams, by changing the amplitudes of two carrier waves, using the ASK, while the carrier waves are out of phase with each other by 90 degrees.