Method, apparatus, and system for processing interference in massive multiple-input multiple-output system

An apparatus for processing interference in a massive multiple-input multiple-output system, the apparatus comprising:

• a processor;
• memory coupled to the processor, the memory comprising instructions that, when executed by the processor, cause the apparatus to:
• obtain a combined outer precoder set and a use probability of each combined outer precoder, wherein the combined outer precoder comprises at least one outer precoder, and the outer precoder is a semi-unitary matrix,
• determine a currently used outer precoder according to the combined outer precoder set and the use probability of each combined outer precoder that are obtained,
• perform a first calculation by using the determined currently used outer precoder to obtain an equivalent channel, and
• perform a second calculation by using the equivalent channel, to obtain an inner precoder.

An apparatus for processing interference in a massive multiple-input multiple-output system, the apparatus comprising:

• a processor, configured to:
• obtain channel correlation matrixes of all links, and calculate a combined outer precoder set by using the channel correlation matrixes of all links, wherein each combined outer precoder comprises at least one outer precoder, and the outer precoder is a semi-unitary matrix, and
• calculate, by using the channel correlation matrixes of all links, a use probability corresponding to each combined outer precoder;
• and
• a transmitter, configured to determine a super frame, and send the combined outer precoder set and the use probability of each combined outer precoder to a base station in the super frame.

An apparatus for processing interference in a massive multiple-input multiple-output system, the apparatus comprising:

• a processor, configured to:
• obtain a combined outer precoder set and a use probability of each combined outer precoder, wherein the combined outer precoder comprises at least one outer precoder, and the outer precoder is a semi-unitary matrix,
• determine a currently used outer precoder according to the combined outer precoder set and the use probability of each combined outer precoder that are obtained;
• perform calculation by using the currently used outer precoder, to obtain an equivalent channel;
• and
• perform calculation by using the equivalent channel, to obtain an inner precoder.

A method for processing interference in a massive multiple-input multiple-output system, the method comprising:

• obtaining channel correlation matrixes of all links;
• calculating a combined outer precoder set by using the channel correlation matrixes of all links, wherein each combined outer precoder comprises at least one outer precoder, and the outer precoder is a semi-unitary matrix;
• calculating a use probability corresponding to each combined outer precoder by using the channel correlation matrixes of all links;
• and
• determining a super frame, and sending the combined outer precoder set and the use probability of each combined outer precoder to a base station in the super frame.

A method for processing interference in a massive multiple-input multiple-output system, the method comprising:

• obtaining a combined outer precoder set and a use probability of each combined outer precoder, wherein the combined outer precoder comprises at least one outer precoder, and the outer precoder is a semi-unitary matrix;
• determining a currently used outer precoder according to the combined outer precoder set and the use probability of each combined outer precoder that are obtained, and performing calculation by using the currently used outer precoder, to obtain an equivalent channel;
• and
• performing calculation by using the equivalent channel, to obtain an inner precoder.