Symbol sending method, symbol receiving method, symbol sending device, symbol receiving device and storage medium

A symbol receiving method, comprising:

• receiving N+1 transmission symbols s0, s1, s2, . . . , sN, wherein 0, 1, 2, . . . , N are indices of the N+1 transmission symbols, s0 is a reference symbol, an amplitude of a transmission symbol with index n is determined according to M1 bits, a phase of the transmission symbol with index n is determined according to a phase of a transmission symbol with index n−1 and M2 bits, M1 is an integer greater than or equal to 1, M2 is an integer greater than or equal to 1, N is an integer greater than or equal to 1, 1≤n≤N, and n is an integer;
• and
• demodulating the N+1 transmission symbols, to obtain (M1+M2)*N bits.

A symbol transmitting method, comprising:

• determining transmission symbols, wherein an amplitude of at least one transmission symbol with index n is determined according to M1 bits, and a phase of the at least one transmission symbol with index n is determined according to a phase of a transmission symbol with index non-n and M2 bits, M1 is an integer greater than or equal to 1, M2 is an integer greater than or equal to 1, and n is an integer;
• and
• transmitting the transmission symbols.