Adaptive Equalization For Logging Telemetry Based On Ofdm

In order to solve the equalization of the logging telemetry based on the Orthogonal Frequency Division Multiplexing, a self-adaptive channel equalization method is proposed and realized. After analysis of telemetry system, through transform of the system structure, according to the characteristics of frame operation, the channel Signal Noise Ratio measurement and real-time dynamic update method are realized, it ensure the logging telemetry no interruption of the premise and real-time dynamic adjustment of the rate according to the channel change. This method enhances the reliability and stability of the system, and improves the efficiency of logging operation.