| 摘要 |
<p>A combiner for use in a spatial diversity radio receiver which receives multiple data signals. The combiner includes a receiving component configured for receiving strength-indicative signals, and demodulated data signals. A control signal generating component generates control signals responsive to the strength-indicative signals. A combining component combines, in linear proportions determined by the control signals, those of the demodulated data signals which are both above a predetermined strength threshold level ('combiner threshold') and differ in strength by less than a predetermined margin of preferably between 3dB and 12dB (e.g. 6dB). When more than the margin separates the signal strengths, only the strongest signal is used. Preferably, rapidly-fading signals are identified by evaluating second derivative signals of the strength-indicative signals, and weighted accordingly if a non-fading signal is available.</p> |
