| 摘要 |
A spatial diversity radio for receiving and evaluating data in the form of a stream of symbols includes multiple receivers having spaced-apart antennae, each receiver comprising a circuit providing both a signal indicative of received signal strength and a demodulated signal output, a circuit to evaluate the signals indicating received signal strength, and generating control signals responsive thereto, a circuit combining the demodulated signal outpu ts in proportions controlled by said control signals to provide a combined outp ut signal, and a circuit evaluating successive symbols represented by the combined output signal. Typically, signals above a threshold level and differing in strength by less than 6dB are linearly combined according to their relati ve strength, signals more than 6dB below the strongest signal are ignored, signals below threshold level are averaged, if no stronger signal is available, and rapidly-fading signals are excluded, if a non-fading signal is available.</S DOAB>
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