A sequence-based signal processing method, comprising: determining, by a user equipmnent, a sequence { x n} comprising N elements, wherein N is a positive integer greater than 1, x n is an element in the sequence { x n}, the sequence { x n} is a sequence satisfying a preset condition, the preset condition is: x n = A · b n · j n, a value of n ranges from 0 to N-1, A is a non-zero complex number, j = − 1, the element b n = u· (1-2· s n), u is a non-zero complex number, and a set of one or more sequences { s n} comprising an element s n comprises at least one sequence in a first sequence set or at least one equivalent sequence of the sequence in the first sequence set, the equivalent sequence { q n} satisfies q n = s ( n + M)mod N, M ∈ {0,1,2,..., N -1}; and generating, by the user equipmnent, a demodulation reference signal, DMRS, based on the sequence { x n}; sending, by the user equipment equipmnent, the DMRS, wherein when N=12, sequences in the first sequence set comprise some or all sequences in a sequence set 1, and the sequences in the sequence set 1 comprise: {1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0}; {1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0}; {1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1}; {1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1}; {1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0}; {1, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 1}; {1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1}; {1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0}; {1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1}; {1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0}; {1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 0, 1}; {1, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1}; {1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0}; {1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1}; {1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0}; {1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0}. determining, by a user equipmnent, a sequence { x n} comprising N elements, wherein N is a positive integer greater than 1, x n is an element in the sequence { x n}, the sequence { x n} is a sequence satisfying a preset condition, the preset condition is: x n = A · b n · j n, a value of n ranges from 0 to N-1, A is a non-zero complex number, j = − 1, the element b n = u· (1-2· s n), u is a non-zero complex number, and a set of one or more sequences { s n} comprising an element s n comprises at least one sequence in a first sequence set or at least one equivalent sequence of the sequence in the first sequence set, the equivalent sequence { q n} satisfies q n = s ( n + M)mod N, M ∈ {0,1,2,..., N -1}; and generating, by the user equipmnent, a demodulation reference signal, DMRS, based on the sequence { x n}; sending, by the user equipment equipmnent, the DMRS, wherein when N=12, sequences in the first sequence set comprise some or all sequences in a sequence set 1, and the sequences in the sequence set 1 comprise: {1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0}; {1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0}; {1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1}; {1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1}; {1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0}; {1, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 1}; {1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1}; {1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0}; {1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1}; {1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0}; {1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 0, 1}; {1, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1}; {1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0}; {1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1}; {1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0}; {1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0}.