Diversity transmission method, terminal, and network-side device

A diversity transmission method, performed by a terminal, comprising:

• determining a target codeword;
• and
• performing diversity transmission based on the target codeword, wherein:
• the target codeword meets a target encoding structure;
• the target codeword is an encoding matrix with N×N dimensions;
• N=2k, and k is a positive integer;
• the target encoding structure comprises a first basic element, a second basic element, a first generation element, and a second generation element;
• the first generation element is an opposite number of a conjugate operation result of the first basic element, and the second generation element is a conjugate operation result of the second basic element;
• and
• the first basic element, the second basic element, the first generation element, and the second generation element are complex numbers or block matrices,
• wherein the determining a target codeword comprises:
• receiving first indication information sent by a network-side device, wherein the first indication information is used to indicate the target codeword, and determining the target codeword based on the first indication information;
• or
• determining, by the terminal, the target codeword based on capability information or channel state information of the terminal.