Patent ID: 8374257

Claim:
A method, comprising: demultiplexing a first signal of a first user into at least first and second signal portions; demultiplexing a second signal of a second user into at least third and fourth signal portions; performing superposition coding on the first and third signal portions to form a first composite signal and performing superposition coding on the second and fourth signal portions to form a second composite signal, wherein performing the superposition coding comprises demultiplexing each signal portion into a plurality of signal streams and superimposing streams corresponding a respective one of the first, second, third and fourth signals portions and pre-coding the first and second composite signals such that at least one of the first and second composite signals is configured to be transmitted across a plurality of antennas; and transmitting the first composite signal via at least a first antenna of a multiple input multiple output (MIMO) system and transmitting the second composite signal via at least a second antenna of the MIMO system.