Iq mismatch compensation method and apparatus, compensation device, communication device and storage medium

A compensation device, comprising a frequency domain compensator for performing frequency domain compensation on a frequency-dependent mismatch parameter, wherein the frequency domain compensator comprises:

• a first adder, a second adder, a first multiplier, and a second multiplier;
• wherein the first adder is connected to the first multiplier;
• wherein the second adder is connected to the second multiplier;
• wherein the first multiplier is configured to compute −jP(w)*X*(−w);
• wherein the second multiplier is configured to compute jP(w)*X*(w);
• wherein the first adder is configured to compute X(w)−jP(w)*X*(−w) to obtain Y(−w);
• and
• wherein the second adder is configured to compute X(−w)+jP(w)*X*(w) to obtain Y(−w);
• wherein w is a sequence number of a subcarrier in a positive half frequency comprised in an orthogonal frequency division multiplexing (OFDM) baseband, Y(w) and Y(−w) are frequency domain signals after being performed compensation, X(−w) and X(w) are frequency domain signals before being performed compensation, P(w) is the frequency-dependent angle mismatch parameter for a subcarrier sequence number of w, X*(w) is a conjugate complex number of X(w), X*(−w) is a conjugate complex number of X(−w), and j represents an imaginary part symbol.

A computer device, comprising a compensation device, wherein the compensation device comprises a frequency domain compensator for performing frequency domain compensation on a frequency-dependent mismatch parameter, wherein the frequency domain compensator comprises:

• a first adder, a second adder, a first multiplier, and a second multiplier;
• wherein the first adder is connected to the first multiplier;
• wherein the second adder is connected to the second multiplier;
• wherein the first multiplier is configured to compute −jP(w)*X*(−w);
• wherein the second multiplier is configured to compute jP(w)*X*(w);
• wherein the first adder is configured to compute X(w)−jP(w)*X*(−w) to obtain Y(w);
• and
• wherein the second adder is configured to compute X(−w)+jP(w)*X*(w) to obtain Y(−w);
• wherein w is a sequence number of a subcarrier in a positive half frequency comprised in an orthogonal frequency division multiplexing (OFDM) baseband, Y(w) and Y(−w) are frequency domain signals after being performed compensation, X(−w) and X(w) are frequency domain signals before being performed compensation, P(w) is the frequency-dependent angle mismatch parameter when the subcarrier sequence number is w, X*(w) is a conjugate complex number of X(w), X*(−w) is a conjugate complex number of X(−w), and j represents an imaginary part symbol.