| 摘要 |
<p>The present invention discloses a method and an apparatus for correcting an in-phase signal and a quadrature-phase signal, and relates to the field of signal processing. The method includes: saving an I signal of a last frame and a Q signal of the last frame that are output by a receiving front end; eliminating a direct-current offset of an I signal of a current frame and a direct-current offset of a Q signal of the current frame according to the I signal of the last frame and the Q signal of the last frame; and geometrically correcting an I signal of the current frame after direct-current offset elimination and a Q signal of the current frame after direct-current offset elimination according to an I signal of the last frame after direct-current offset elimination and a Q signal of the last frame after direct-current offset elimination to obtain a corrected I signal of the current frame and a corrected Q signal of the current frame. The present invention can eliminate distortion of IQ signals and distortion of an IQ signal constellation diagram to facilitate subsequent signal processing and demodulation without using hardware, thereby greatly lowering a hardware cost.</p> |
