Method and apparatus for serial bus communication based on orthogonal signal waveform

According to an embodiment of the invention, a communications apparatus is provided. Said communication apparatus, by modulating the data to generate the first data symbol. The communication unit is configured to use the first signal waveform and the first data symbol allocated among a plurality of waveform signals to each other perpendicular (orthogonal) generating a first signal. And said communication apparatus, and outputs the first signal to a serial (serial) the line associated with the other communication device.