Signal transmission apparatus

A signal transmission apparatus comprising:

• a sender including a processor to execute a program;
• and a memory to store the program which, when executed by the processor, performs processes of performing numerical value computation of data signals of a plurality of sequences;
• and DA converters to convert the signals outputted from the processor to analog signals and to send out the analog signals to a transmission path formed of a plurality of conductors, the number of the DA converters being equal to the number of the data signals of the plurality of sequences;
• and
• a receiver including AD converters to convert the signals received through the transmission path to digital signals, the number of the AD converters being equal to the number of the data signals of the plurality of sequences in the sender;
• a processor to execute a program;
• and a memory to store the program which, when executed by the processor, performs processes of reconstructing the data signals of the plurality of sequences from the signals outputted from the AD converters, wherein
• the processor of the sender is configured to calculate output signals using a matrix formed of eigenvectors corresponding to transmission eigenmodes in which the signals propagate through the transmission path, and the processor of the receiver is configured to calculate the data signals of the plurality of sequences by inverse of the matrix used by the processor of the sender,
• the processor of the sender is configured to multiply a result of adding together two-sequence data signals by a weight coefficient (1−α) and allow a resultant as one output data, and to multiply a result of subtracting the data signals from each other by a weight coefficient α and allow a resultant as other output data, and
• the processor of the receiver is configured to multiply the received one output data by a weight coefficient 1/(1−α) and multiply the other output data by a weight coefficient 1/α, and to add together the one output data and the other output data and allows a resultant to serve as one data signal out of the two-sequence data signals, and to subtract the one output data and the other output data from each other and allow a resultant to serve as an other data signal.