Demodulation Using Two Modulation Schemes in 5G and 6G

Non-transitory computer-readable media in a wireless transmitter, the media containing instructions that, when implemented in a computing environment, cause a method to be performed, the method comprising:

• a) determining or receiving a message to be transmitted, the message comprising message elements, each message element comprising one resource element of a resource grid;
• b) modulating each message element according to a first modulation scheme, the first modulation scheme comprising amplitude modulation multiplexed with phase modulation;
• and
• c) transmitting, for each message element, a signal comprising:
• i) an amplitude level selected, according to the message, from a first plurality of predetermined amplitude levels;
• and
• ii) a phase level selected, according to the message, from a second plurality of predetermined phase levels.

A method for a wireless receiver to mitigate noise, the method comprising:

• a) receiving a message modulated, by a transmitter, according to a first modulation scheme comprising amplitude modulation multiplexed with phase modulation;
• b) receiving, proximate to the message, a demodulation reference comprising a first resource element and a second resource element;
• c) determining, according to the first resource element of the demodulation reference:
• i) a phase rotation angle;
• and
• ii) a plurality of predetermined branch amplitude levels of a second modulation scheme different from the first modulation scheme;
• d) determining, according to the second resource element of the demodulation reference, a background amplitude and a background phase;
• e) correcting the message according to the phase rotation angle, the background amplitude, and the background phase;
• and then
• f) demodulating the message, as corrected, according to the plurality of predetermined branch amplitude levels.