| 摘要 |
A communications system employing discrete multi-tone or DMT modulated signals on a communications channel formed by inductively-coupled pipe has multiple repeaters in a string, with each repeater configured to receive a DMT-modulated signal, to recover information from the DMT-modulated signal, and to re-transmit the information in the form of a DMT-modulated signal. In one embodiment, the communications system includes a string of wired pipe joints that couple a transmitter to a receiver. Each pipe joint in the string possesses threaded ends configured for mechanically connecting with other pipe joints, an electric or inductive coupler at each treaded end, and an insulated conductor that electrically connects the couplers. The transmitter and receiver communicate via DMT modulated signals transported by the wired pipe string. |
