| 摘要 |
PURPOSE:To attain highly efficient transmission by discriminating all transmitted data in phase to obtain a control signal, and extending the range of application to a multi-value digital communication. CONSTITUTION:Orthogonal detecting means 402, 403 are provided to all phase components of an amplitude phase modulation input signal. The signal applied with orthogonal detection is obtained as an absolute value, an absolute value of sum and an absolute value of difference by analog operating circuits 405-410. A control signal having a control factor is obtained to a duty to all phase components via means 411-422 discriminating phase to all data. Further, the range of application to the multi-value digital communication is extended and the highly efficient transmission is attained. |
