| 摘要 |
PURPOSE:To prevent the scale of device from being increased by providing an interference compensation circuit of other system and applying digital processing similarly as inter-code interference compensation and cross polarized compensation. CONSTITUTION:A demodulation circuit 1 is provided basically with an orthogo nal detector 5 and A/D converters 6, 7. The A/D converters 6, 7 apply multi- value identification of a 4-value base band signal and converts the result into a 6-bit binary data signal (P1-P6) and a signal (Q1-Q6). The other system interference compensation circuit 4 consists of the 1st other system interference compensation circuit 8 to binary data signals (P1'-P6') and the 2nd other system interference compensation circuit 9 to binary data signals (Q1'-Q6'), and the both are of the same constitution to form the main data signals (P1''-P2'') and (Q1''-Q2'') from which the interference signal based on other modulation system is eliminated. Thus, a part of function of the receiver not as other func tion of other device as a conventional interference wave eliminating device is realized. |
