Multichannel-Based Signal Transmission Method and Apparatus

A method, comprising:

• combining N groups of lower-order modulation symbols into N groups of higher-order modulation symbols, wherein an ith higher-order modulation symbol in each of the N groups of higher-order modulation symbols is obtained by combining an ith lower-order modulation symbol from each of the the N groups of lower-order modulation symbols, wherein each of the N groups of lower-order modulation symbols comprises M lower-order modulation symbols, N is a positive integer greater than 1, M is a positive integer greater than 1, and i is an integer from 1 to M;
• determining N to-be-sent signals based on the N groups of higher-order modulation symbols;
• and
• for each integer value of k from 1 to N, sending a kth to-be-sent signal in the N to-be-sent signals using a kth channel in N channels.

An apparatus, comprising:

• a processor, configured to:
• combine N groups of lower-order modulation symbols into N groups of higher-order modulation symbols, wherein an ith higher-order modulation symbol in each of the N groups of higher-order modulation symbols is obtained by combining an ith lower-order modulation symbol from each of the N groups of lower-order modulation symbols, wherein each of the N groups of lower-order modulation symbols comprises M lower-order modulation symbols, N is a positive integer greater than 1, M is a positive integer greater than 1, and i is an integer from 1 to M;
• and
• determine N to-be-sent signals based on the N groups of higher-order modulation symbols;
• and
• a transceiver, configured to send, for each integer value of k from 1 to N, a kth to-be-sent signal in the N to-be-sent signals using a kth channel in N channels.