Apparatus and method for reusing existing constellation for superposed transmission
AssigneeNokia Technologies Oy
InventorsKarol Schober, Mihai Enescu, Mikko Tapio Kokkonen
Life of this patent
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Abstract
One embodiment is directed to a method comprising deciding to multiplex the data of at least two users within a super-constellation; determining the power split ratio among the at least two users; selecting a super-constellation; and based on the determined power split ratio, choosing a subset of the super-constellation points forming the superposition of modulation constellations of the at least two users.
Claims18
A method, comprising:
- deciding, by an apparatus, to multiplex data of at least two users within a super-constellation;
- determining a power split ratio among the at least two users;
- selecting a super-constellation;
- and
- based on the determined power split ratio, choosing a subset of super-constellation points forming a superposition of modulation constellations of the at least two users, the method further comprising:
- normalizing a multiplexed signal to nominal power.
An apparatus, comprising:
- at least one processor;
- and at least one memory including computer program code,
- wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to:
- decide to multiplex data of at least two users within a super-constellation;
- determine a power split ratio among the at least two users;
- select a super-constellation;
- and
- based on the determined power split ratio, choose a subset of super-constellation points forming a superposition of modulation constellations of the at least two users, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus further to:
- normalize a multiplexed signal to nominal power.
A computer program product comprising a non-transitory computer-readable medium bearing computer program code embodied therein for use with a computer, the computer program code comprising:
- code for deciding to multiplex data of at least two users within a super-constellation;
- code for determining a power split ratio among the at least two users;
- code for selecting a super-constellation;
- and
- code for choosing a subset of super-constellation points forming a superposition of modulation constellations of the at least two users, based on the determined power split ratio, the computer program code further comprising:
- code for normalizing a multiplexed signal to nominal power.
Dependencies are inferred from the claim text.