Information bit sending method, device and system

The embodiment of the invention discloses an information bit sending method, a device and a system, relates to the technical field of communication and can realize that thirteen information bits can be coded into forty-eight codon bits in a maximum state while improving coding performance. The method comprises the steps of generating B codon bits by coding A information bits according to a coding matrix and a coding formula, modulating the B codon bits after being coded according to a set modulating manner, and mapping modulated symbols after being modulated onto a physical channel according to a set format to be sent; wherein the coding matrix is a matrix with forty-eight lines and A columns, and comprises at least one column in a set matrix with forty-eight lines and 3 columns; or the coding matrix comprises at least one column in the set matrix with forty-eight lines and 3 columns which has undergone line replacement. The method, the device and the system provided by the embodiment of the invention can be mainly applied to the process that the thirteen information bits can be coded into the forty-eight codon bits in the maximum state.