Method and system for improving communication
First Claim
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1. A modular cellular wireless communication base station comprising:
- a plurality of pairs of respectively orthogonal polarization antennas, each pair having a respective location, a plurality of active radiator modules located each at one of said respective antenna pair locations, each module associated with antenna pair corresponding to said location, for each antenna a transmitter comprising a power amplifier, and a receiver;
for each module a beam-forming network controlling relative amplitudes and phases of each of said modules;
an RF front end for transmitting over a low power link with said plurality of active radiator modules via said beam forming network and for receiving over a lower power link via a low noise amplifier;
and a delay diversity module, located to operate on a low power signal prior to amplification by a respective one of said power amplifiers, that provides a transmission CDMA delay diversity.
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Abstract
Method and device for enhancing performance of a base station (112) transceiver by detecting signal received from a mobile transceiver (140) by at least two antennas (H, V), thereby producing a plurality of received signal portions, determining the polarization of a signal transmitted to the mobile transceiver (140) according to the detected polarization characteristics, providing the reassembling the received signal from the received signal portions according to the detected polarization characteristics and alternatively dithering the polarization of the transmitted signal.
106 Citations
4 Claims
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1. A modular cellular wireless communication base station comprising:
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a plurality of pairs of respectively orthogonal polarization antennas, each pair having a respective location, a plurality of active radiator modules located each at one of said respective antenna pair locations, each module associated with antenna pair corresponding to said location, for each antenna a transmitter comprising a power amplifier, and a receiver;
for each module a beam-forming network controlling relative amplitudes and phases of each of said modules;
an RF front end for transmitting over a low power link with said plurality of active radiator modules via said beam forming network and for receiving over a lower power link via a low noise amplifier;
and a delay diversity module, located to operate on a low power signal prior to amplification by a respective one of said power amplifiers, that provides a transmission CDMA delay diversity. - View Dependent Claims (2, 3, 4)
a SAW delay line, and an amplifier that compensates for a delay line insertion loss.
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3. A modular cellular wireless communication base station according to claim 1 and wherein said delay diversity module is connected at a transmission beam forming network input.
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4. A modular cellular wireless communication base station according to claim 1 and wherein said delay diversity module is connected at an active antenna transmission input.
Specification