Method and apparatus for transmission polarization selection for a cellular base station

A method and apparatus for transmission polarization selection that includes receiving a signal from a device where the signal is received at two or three polarizations each polarization being orthogonal to each other. The polarization receiving the signal having the best performance characteristics...

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Hauptverfasser: LEPPANEN KARI J, HUGL KLAUS, LAURILA JUHA K
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method and apparatus for transmission polarization selection that includes receiving a signal from a device where the signal is received at two or three polarizations each polarization being orthogonal to each other. The polarization receiving the signal having the best performance characteristics is determined. Transmissions to the device are routed through appropriate transceivers and antennas such that they are transmitted using a polarization the same as that receiving the signal having the best performance characteristics. Performance characteristics measured may include highest power level, highest signal to noise ratio (SNR), highest carrier to interference ratio (CIR), highest signal to noise plus interference ratio (SNIR), lowest bit error ratio (BER), or lowest block error ratio (BLER).