Dual-channel heterogeneous transmission method and system suitable for electric power Internet of Things

According to a dual-channel heterogeneous transmission method and system suitable for the electric power Internet of Things, the characteristics of coverage of multiple communication systems of existing services are fully utilized, and the reliability of information transmission of an electric power communication network architecture is enhanced and the survivability of electric power communication is improved through duplicate of dual-channel transmission information; a sending end adopts a rate matching module and a multiple access module to realize transmission of multiple service data under the same communication network architecture, thereby avoiding repeated construction of a communication network of the power Internet of Things; the sending end adopts an Alamouti coding scheme, andan optimal signal-to-noise ratio combined signal processing mode is correspondingly designed at the receiving end; according to the Alamouti encoding scheme, dual-channel data has certain encoding redundancy, and the reliabil