Receiver with multi layer interference cancellation

摘要

A multi user receiver configured to receive a signal including multiple symbol streams assigned to various users is described. The multiple symbol streams include at least one first symbol stream assigned to a user of the multi user receiver and at least one second symbol stream assigned to another user, wherein a modulation alphabet applied for the at least one second symbol stream is unknown at the multi user receiver. The multi user receiver includes a symbol stream election unit configured to elect a symbol stream of the multiple symbol streams, an equalizer configured to provide an equalized symbol of the elected symbol stream, and a detector configured to generate a detected symbol from the equalized symbol on the basis of a constellation, wherein, if the second symbol stream is elected, the constellation is a mixed constellation including constellation points of at least two of multiple predefined modulation alphabets.

主权项

1. A multi user receiver configured to receive a signal comprising multiple symbol streams assigned to various users, wherein the multiple symbol streams include at least one first symbol stream assigned to a user of the multi user receiver and at least one second symbol stream assigned to another user, wherein a modulation alphabet applied for the at least one second symbol stream is unknown at the multi user receiver, the multi user receiver comprising:
a symbol stream election unit configured to elect a symbol stream of the multiple symbol streams; an equalizer configured to provide an equalized symbol of the elected symbol stream; and a detector configured to generate a detected symbol from the equalized symbol based on a constellation, wherein, if the second symbol stream is elected, the constellation used for generating the detected symbol is a mixed constellation comprising constellation points of at least two of multiple predefined modulation alphabets.