Compensation method for IQ imbalance existing in OFDM system receiver

Abstract

The invention discloses a compensation method for IQ imbalance existing in an OFDM system receiver. An IQ compensation module of the OFDM system receiver effectively compensates the IQ imbalance on the basis of obtaining channel parameter estimation of the IQ imbalance. The Gaussian elimination compensation method replaces a frequency domain LS compensation method, so that the computation complexity is significantly reduced (the frequency domain LS compensation method needs to carry out matrix inversion, so that the complexity is high.). The SNR loss of the method is lower than that of the frequency domain LS compensation method.

Description

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AI Technical Summary

Benefits of technology

This new technology uses both techniques like IFM or Gauss filtering to improve signal quality by reducing interference from other signals while still maintaining good reception at certain frequencies within specific parts of the spectrum.

Problems solved by technology

This patented technical solution described in this patents relates to improving the performance of an orthogonal frequency division Multiplexed (OCDMA), which can transmit signals over different types of media like wired or wireless networks without causing any distortion from their original waveform characteristics. Additionally, it addresses issues related to phase balance caused by movement within the network itself that causes changes in amplitude levels at both ends of each link.

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