Method and arrangement for radio communication
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorLars Erhage
Life of this patent
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Abstract
A method and apparatus for radio communication are presented. The method employs an antenna having multiple transceivers, each capable for receiving a part-signal of a signal received by the antenna. The phase and amplitude of the part-signals are modulated with a code that corresponds to the part-signal. The part-signals are then digitally processed using an analog-to-digital converter, and then demodulated with a demodulation code that is an inverse of the modulation code. The demodulated signal is then divided into separable part-signals which correspond to different reception patterns of the antenna.
Claims8
A method comprising the steps of:
- receiving a signal in an antenna having a plurality of transceiver modules, each transceiver module including an antenna element for receiving a part-signal of the received signal, a controllable phase rotator and a controllable amplifier;
- controlling a phase rotation of the part-signal using the phase rotator;
- controlling an amplification of the part-signal using the amplifier;
- modulating at least one of the phase rotation and the amplification of the part-signal with a predetermined modulation code to correspond to the part-signal;
- summing all part-signals received in the respective transceiver modules;
- converting the summed signal from an analog signal to a digital signal;
- demodulating the converted signal with a demodulation code that is an inverse of the modulation code;
- and
- dividing the demodulated signal into at least two separable part-signals which correspond to different reception patterns of the antenna.
An apparatus comprising:
- an antenna having a plurality of transceiver modules, each transceiver module including an antenna element for receiving a part-signal of a received signal;
- a phase rotator coupled to the antenna element for controlling a phase rotation of the received part-signal;
- an amplifier coupled to the phase rotator for controlling an amplification of the received part-signal;
- a modulator for modulating at least one of the phase rotation and the amplification of the part-signal with a predetermined modulation code to correspond to the part-signal;
- a summation unit for summing all part-signals received in the respective transceiver modules;
- an analog-to-digital converter for converting the summed signal from an analog signal to a digital signal;
- a demodulator for demodulating the converted signal with a demodulation code that is an inverse of the modulation code;
- and
- a dividing unit for dividing the demodulated signal into at least two separable part-signals which correspond to different reception patterns of the antenna.
Dependencies are inferred from the claim text.