According to the present invention a method of asynchronous transmission over a noisy channel is provided. The method comprises at least following steps: providing a data frame, said data frame including at least one start bit, payload data and at least one stop bit, said data frame having a predetermined number of bits, forming a signaling preamble having a predetermined length by using at least said start and stop bit periods of said data frame, building a processed data frame by attaching said signaling preamble to said payload data, said processed data frame having the same predetermined number of bits, and modulating said processed data by using a signaling modulation scheme and transmitting said modulated processed data over said noisy channel. The method according to the present invention can be advantageously be implemented for data transmission over DC and/or AC power lines, like for instance in vehicles or cars. Despite of the noise occurred on the data channel the method transmits the data in a ro
