| 摘要 |
<p>The present invention of interfering continuous-wave signals are automically detected in the demodulated output of a quadrature amplitude modulation data communications receiver. The transmitter (16) is re-tuned in order to avoid the detected interferer. Statistical information concerning the received signal is accumulated at a receiver (18) and is analyzed to determine whether a reduction in the received bit-error-rate is due to the presence of an interferer. If an inteferer is determined to be present within the signal transmission bandwidth, then the potentially available transmission band is spectrum analyzed to find a new portion of that band in which the signal can be transmitted free of the interferer. The results of the statistical analysis and the spectral analysis are conveyed back to the transmitter (16) which then readjusts the transmission parameters and forwards the new parameters to the receiver (18). The system resumes operation in the new transmission band with no interference and with the bit-error-rate restored to its required level.</p> |
