4G precoding and antenna port mapping simulation system and method

The invention discloses a 4G precoding and antenna port mapping simulation system and method, and belongs to the technical field of simulation. A complete pre-coding simulation process is provided for three pre-coding schemes of spatial multiplexing, transmission diversity and beam forming; when the precoding scheme is beamforming, determining an antenna port to be used according to a transmission scheme and the number of physical antennas; when the precoding scheme is beamforming and the transmission scheme is 9/10, a complete precoding matrix with the line number being the number of antenna ports and the column number being the number of layers is reserved. The pre-coding simulation process is not only feasible, but also more conforms to the protocol specification; a mapping simulation function from a user dedicated antenna port ({5, 7-14}) to a physical antenna is newly added, and antenna port mapping is carried out by using a matrix operation mode. The matrix elements can be set in a user-defined mode and