Method and device for transmitting data by using multidimensional constellation diagram

A method for transmitting data by using a multidimensional constellation diagram, wherein the method comprises:

• receiving modulated data sent by a sending device;
• demodulating n real numbers from the modulated data;
• finding, in an n-dimensional constellation diagram, a constellation point having a closest Euclidean distance to a point with coordinates being the demodulated n real numbers, wherein in the n-dimensional constellation diagram, there are at least n(n+1) minimum-distance constellation points around each non-boundary constellation point;
• and
• mapping the found closest constellation point into a data bit.

A sending device, comprising a bus, and a processor, a memory, and an interface that are connected to the bus, wherein the memory is configured to store an instruction, and the processor executes the instruction to:

• map, by using an n-dimensional constellation diagram, bit data into a column vector comprising n real numbers, wherein in the n-dimensional constellation diagram, there are at least n(n+1) minimum-distance constellation points around each non-boundary constellation point;
• modulate, by using a resource element, the n real numbers comprised in the column vector;
• and
• send modulated data through the interface.

A receiving device, comprising:

• a bus, and
• a processor, a memory, and an interface connected to the bus, wherein the memory is configured to store an instruction, and the processor executes the instruction to:
• receive, through the interface, a modulated signal sent by a sending device;
• demodulate n real numbers from the modulated signal;
• find, in an n-dimensional constellation diagram, a constellation point having a closest Euclidean distance to a point with coordinates being the demodulated n real numbers, wherein in the n-dimensional constellation diagram, there are at least n(n+1) minimum-distance constellation points around each non-boundary constellation point;
• and
• map the found closest constellation point into a data bit.