Communication system, transmitter, receiver and communication method

A transmission method comprising:

• generating dedicated reference signals for respective reception devices;
• generating data signals for the respective reception devices;
• spatially multiplexing, using nonlinear processing, at least some of the dedicated reference signals and at least some of the data signals;
• transmitting the spatially multiplexed signals;
• determining an order of the plurality of reception devices corresponding to an order interference cancellation;
• and
• multiplexing the dedicated reference signal for the reception device with the data signal for the later reception device in the determined order than the reception device being the destination of the dedicated reference signal.

A non-transitory computer-readable medium comprising computer-executable instructions for causing one or more processor(s) and/or memory to perform:

• generating dedicated reference signals for respective reception devices;
• generating data signals for the respective reception devices;
• spatially multiplexing, using nonlinear processing, at least some of the dedicated reference signals and at least some of the data signals;
• transmitting the spatially multiplexed signals;
• determining an order of the plurality of reception devices corresponding to an order interference cancellation;
• and
• multiplexing the dedicated reference signal for the reception device with the data signal for the later reception device in the determined order than the reception device being the destination of the dedicated reference signal.