There is provided a transmission system in which a data sequence is transmitted. The transmission system includes a transmitter that generates a transmission signal by converting pieces of data included in the data sequence into data waveforms each of which has (i) a level signal whose signal level is determined by a value of a corresponding one of the pieces of data and (ii) a timing edge indicating a timing to obtain the level signal, and transmits the generated transmission signal, and a receiver that detects the signal level of each of the data waveforms of the received transmission signal at the timing designated by the timing edge of the each data waveform, and outputs a data value corresponding to the detected signal level.