| 摘要 |
The device has non-linear processor to extract modulated components, with moving average determination mechanism, carrier phase determination mechanism and filter bandwidth determination to regulate bandwidth of moving average mechanism : A demodulator comprises a nonlinear processor (20) for removing the modulated components from received baseband signals to obtain unmodulated complex data. A first moving average mechanism (25a) determines the moving average of unmodulated complex data. A further mechanism (24) determines the carrier phase from the vector angle represented by the moving average. A filter bandwidth determination unit (5) controls the bandwidth of the first moving average means by using the data of past r symbols in the unmodulated complex data. |
