| 摘要 |
It is described a discrimination procedure of a wanted signal from a plurality of cochannel interferents received by array antennas of GSM or DCS base transceiver stations. The procedure includes a phase for the estimate of the number and arrival directions of the interferents, and of the wanted signal, followed by a spatial filtering phase in which the signals transduced by the sensors of the array are linearly combined among them through multiplication coefficients, or weights, organized in a vector w satisfying the two following conditions: A) Spatial filtering constrains the gain of the array in the ratio between wanted signal and noise, compared to the traditional use of a single sensor, so that the gain is not less than a properly selected threshold; B) it minimizes the ratio between the sum of interferents' powers and wanted signal power.
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