Method and Device for Multiuser Superposition Transmission, and Method and Device for Demodulating Multiuser Information Transmission

A method for demodulating multiuser information transmission, comprising:

• receiving a sending signal from a sender, wherein the sending signal is formed according to a third complex symbol sequence after two bit information streams are respectively modulated into a first complex symbol sequence and a second complex symbol sequence and superposition processing is performed on the first complex symbol sequence and the second complex symbol sequence to generate the third complex symbol sequence on the sender, and the third complex symbol sequence has a Gray mapping attribute;
• and
• demodulating the received signal according to a demodulation manner corresponding to a type of a user.

(canceled)

A demodulation device for multiuser information transmission, comprising:

• a receiving component, arranged to receive a sending signal from a sender, wherein the sending signal is formed according to a third complex symbol sequence after two bit information streams are respectively modulated into a first complex symbol sequence and a second complex symbol sequence and superposition processing is performed on the first complex symbol sequence and the second complex symbol sequence to generate the third complex symbol sequence on the sender, and the third complex symbol sequence has a Gray mapping attribute;
• and
• a demodulation component, arranged to demodulate the received signal according to a demodulation manner corresponding to a type of a user.

(canceled)