| 摘要 |
<p>In order to rapidly resynchronize a QAM demodulator by effectively operating a transversal equalizer, a message point of an incoming quadrature-modulated signal is checked as to its location within a signal space diagram. In the event that the message point is deviated within a predetermined region of the signal space diagram, a transversal filter functions normally irrespective of whether or not a demodulating section is synchronized, while in the event that the message point is deviated outside the predetermined region, the transversal filter is allowed to perform the normal operation thereof only if the demodulating section is in synchronism.</p> |
