OFDM-based method and device for spreading and transmitting compressed data

A method performed by a receiver in a communication system, the method comprising:

• receiving, from a transmitter, configuration information for receiving a signal;
• receiving, from the transmitter, scheduling information for receiving the signal;
• receiving, from the transmitter, the signal;
• reconstructing a sparse vector from the signal, based on the configuration information and the scheduling information;
• and
• decompressing the reconstructed sparse vectors to acquire transmission information.

A transmitter in a communication system, the transmitter comprising:

• a transceiver;
• and
• a controller configured to:
• transmit, to a receiver, configuration information for transmitting a signal, identify resources for transmitting the signal and transmit, to the receiver, scheduling information indicating the resources,
• convert a signal to be transmitted into a compressed signal according to the configuration information, spread the compressed signal to multiple dimensions, map a part of the spread compressed signal to the resources corresponding to the scheduling information, and convert the spread compressed signal to generate an orthogonal frequency-division multiplexing (OFDM) signal and transmit, to the receiver, the generated OFDM signal.

A receiver in a communication system, the receiver comprising:

• a transmitter;
• and
• a controller configured to:
• receive, from the transmitter, configuration information for receiving a signal,
• receive, from the transmitter, scheduling information for receiving the signal,
• receive, from the transmitter, the signal,
• reconstruct a sparse vector from the signal, based on the configuration information and the scheduling information, and decompress the reconstructed sparse vector to acquire transmission information.