Mimo radio system with antenna signal combiner
AssigneeAirgain Incorporated
InventorsXiao Ping Yang, Pertti Visuri
Life of this patent
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Abstract
Systems and methods for a MIMO radio with antenna signal combiners are presented. In one embodiment, a (MIMO) radio system for use in a multi-path environment is described. The system includes a plurality of antenna subsystems, each subsystem comprising two or more antennas and a combiner configured to combine signals received via the two or more antennas in a ratio. The system further includes a radio for each of the plurality of antenna subsystems configured to demodulate the combined signal and a MIMO processor configured to produce a single data stream from the demodulated signals.
Claims15
A multiple-in, multiple-out (MIMO) radio system for use in a multi-path environment, the system comprising:
- a plurality of antenna subsystems, each subsystem comprising,
- two or more antennas;
- and
- a combiner configured to combine signals received via the two or more antennas in a ratio;
- a radio for each of the plurality of antenna subsystems configured to demodulate the combined signal;
- and
- a MIMO processor configured to produce a single data stream from the demodulated signals.
A multiple-in, multiple-out (MIMO) radio system for use in a multi-path environment, the system comprising:
- a plurality of antenna subsystems, each subsystem comprising,
- two or more antennas;
- a controller for altering the gain of a signal received via one of the two or more antennas;
- a combiner configured to combine signals received via the two or more antennas in a ratio;
- a radio for each of the plurality of antenna subsystems configured to demodulate the combined signal;
- a MIMO processor configured to produce a single data stream from the demodulated signals;
- and
- a processor configured to,
- determine a quality metric based on the processed signal from the MIMO processor;
- and
- modify the ratio based at least in part on the quality metric.
A method of operating a multiple-in, multiple-out (MIMO) radio system for use in a multi-path environment, the MIMO radio system comprising a first set of antennas coupled to a first combiner that is coupled to a first radio, a second set of antennas coupled to a second combiner that is coupled to a second radio, and a MIMO processor for processing the signals from the first and second radios, the method comprising:
- receiving signals via the first set of antennas;
- combining the signals from the first set of antennas into a first combined signal using a first ratio;
- demodulating the first combined signal;
- receiving signals via the second set of antennas;
- combining the signals from the second set of antennas into a second combined signal using a second ratio;
- demodulating the second combined signal;
- and
- processing the demodulated signals into a single data stream.
The method of claim 14 wherein the first and second ratios are fixed.
Dependencies are inferred from the claim text.