Method, transmission device, processing apparatus, and storage medium for transmitting channel state information, and method and reception device for receiving channel state information

A method of receiving channel state information (CSI) by a receiving device in a wireless communication system, the method comprising:

• determining a decoder with S inputs for each of transmitting devices among decoders supported by the receiving device based on a number of feedback bits B, where B=S×Q;
• receiving B-bit encoded CSI from a transmitting device;
• determining S real-valued numbers based on S×Q bits in the encoded CSI;
• and
• determining a precoding matrix by decoding the S real-valued numbers through the decoder,
• wherein the decoders have different numbers of inputs and are predetermined for different ranges of numbers of feedback bits.

A transmitting device configured to transmit channel state information (CSI) in a wireless communication system, the transmitting device comprising:

• at least one transceiver;
• at least one processor;
• and
• at least one computer memory operably connected to the at least one processor and configured to store instructions that, when executed, cause the at least one processor to perform operations comprising:
• determining an encoder with S outputs among encoders supported by the transmitting device based on a number of feedback bits B, where B=S×Q;
• outputting S real-valued numbers by encoding the CSI through the encoder;
• determining B-bit encoded CSI including Q bits representing a respective one of the S real-valued numbers;
• and
• transmitting the B-bit encoded CSI,
• wherein the encoders have different numbers of outputs and are predetermined for different ranges of numbers of feedback bits.

A receiving device configured to receive channel state information (CSI) in a wireless communication system, the receiving device comprising:

• at least one transceiver;
• at least one processor;
• and
• at least one computer memory operably connected to the at least one processor and configured to store instructions that, when executed, cause the at least one processor to perform operations comprising:
• determining a decoder with S inputs for each of transmitting devices among decoders supported by the receiving device based on a number of feedback bits B, where B=S×Q;
• receiving B-bit encoded CSI from a transmitting device;
• determining S real-valued numbers based on S×Q bits in the encoded CSI;
• and
• determining a precoding matrix by decoding the S real-valued numbers through the decoder,
• wherein the decoders have different numbers of inputs and are predetermined for different ranges of numbers of feedback bits.