Research on Channel Equalization Technology for Logging System Based on OFDM

摘要

This paper proposes a concept of channel equalization on the basis of OFDM technology, combining with factors which would affect the quality of data transmission in logging process. After analyzing the theory and basic arithmetic of channel equalization, we built the whole system, the adaptive equalization system, based on least mean square error in Matlab / Simulink platform. As a result of the simulation test, we shows that the adaptive equalization arithmetic can automatically adjust the equalizer filter coefficients and reduce signal attenuation and inter-symbol interference, thus ensuring accurately recovery of the transmitted signal from the detection end,which meet the design requirements.