Multi-layer transmission and reception method in 1-bit quantization system, and apparatus therefor

A method of transmitting and receiving a signal, by a first device, in a wireless communication system, the method comprising:

• transmitting, to a second device, a reference signal (RS);
• transmitting, to the second device, a data signal,
• wherein the reference signal is generated differently based on a modulation method of the data signal, and
• wherein is transmitted in time slots which is determined based on modulation order and a number of layers of the data signal.

A first device for transmitting and receiving a signal in a wireless communication system, the first device comprising:

• transmission and reception unit for transmitting and receiving a radio signal;
• and
• a processor functionally connected to the transmission and reception unit,
• wherein the processor is configured to:
• receiving, from a second device, a reference signal (RS);
• generating a demodulation reference vector based on the reference signal;
• and
• receiving, from the second device, a data signal based on the demodulation reference vector,
• wherein the reference signal is generated differently based on a modulation method of the data signal, and
• wherein the reference signal is received in time slots which is determined based on modulation order and a number of layers of the data signal.