| 摘要 |
PURPOSE:To separate the interference between codes and channels by adding a control signal for detecting transmission detection with different phase to orthogonal channels at the transmission side, transmitting the result and setting weight information of a compensation filter for transmission characteristic equalization at the reception side so as to correct automatically the transmission characteristic. CONSTITUTION:An equalizer 30 consists of equalizers 31, 32 for eliminating interruption between channels and codes respectively, the equalizer 31 is expressed by LPF33-36 having transmission characteristics Uomega, Uomega, Tomega and Tomega and subtractor circuits 37, 38 at the output side equivalently. On the other hand, the equalizer 32 is expressed by LPFs 39, 40 having transmission characteristic Eomega and Eomega for equalization to eliminate the interference between codes. Then interference between channels is eliminated by passing an output signal of adder circuits 26, 27 through the equalizer 31 and the interference between codes is eliminated by passing it through the equalizer 32 at the post-stage. |
