| 摘要 |
A method and apparatus for data communication in an oil well environment, wherein the method comprises detecting an acoustic signal transmitted along an acoustic channel (15), the acoustic signal being distorted from transmission through the acoustic channel (15), generating a transmitted data signal in response to the acoustic signal, inputting the transmitted data signal to an adaptive equalizer (48) and adaptively equalizing the transmitted data signal to produce an equalized data signal related to the transmitted data signal by a mathematical function. The detecting step may include positioning an acoustic receiver (46) in a communication unit (24) along the acoustic channel (15). The communication unit (24) may be positioned downhole and the adaptive equalizer (48) may be positioned remotely relative to the communication unit (24) or may be placed in the communication unit (24). The adaptive equalizer (48) may be a frequency domain filter, a neural net adaptive equalizer or a nonlinear recurrent neural net equalizer. The acoustic signal may comprise a plurality of discrete transmission which may be a training sequence for training the adaptive equalizer and may comprise a first discrete transmission transmitted repeatedly.
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