Data transmitting, receiving method and device

A data transmission method and a reception apparatus, a data transmission method comprising the steps of: A: dividing data to be sent at the sending end, randomized, interleaving the FEC coding treatment; B: The subchannel and bit energy distribution parameter data interleaving processing QAM mapping processing, is mapped to the corresponding point QAM constellation; C: data using QAM mapping process to generate frequency-domain data frames, the data frames and frequency-domain transform IFFT OFDM signal is generated; D: inserting a cyclic prefix in the OFDM signal digital-analog conversion and generates a baseband analog signal, the analog baseband signal to the receiving end of the wireline traffic subchannels in. The method and apparatus of the present invention, in a conventional wireline substantial increase in the data transfer rate to meet the amount of a large data transmission requirements for downhole tools.