Distributed antenna system for MIMO signals
First Claim
1. A distributed antenna system, comprising:
- a master unit configured to receive at least one set of multiple input multiple output (MIMO) channel signals at an original MIMO frequency from at least one signal source, the MIMO channel signals including at least a first MIMO channel signal and a second MIMO channel signal;
the master unit further configured to receive at least one non-MIMO signal that has a frequency in a first legacy service frequency band and having a band processing circuit component configured for processing the signal in the first legacy service frequency band;
the master unit being configured to frequency convert at least one of the first and second MIMO channel signals from the original MIMO frequency to a different frequency close to the first legacy service frequency band, the master unit further configured to process the at least one converted MIMO channel signal and the non-MIMO signal using the same band processing circuit component, and to combine non-MIMO signals in the first legacy service band and the first MIMO channel signal and the second MIMO channel signal for transmission;
an optical link operably coupled with the master unit;
a unit located remotely from the master unit and in communication with the master unit via the optical link for transceiving the MIMO channel signals and non-MIMO signals, the unit including band processing circuitry configured for processing together the non-MIMO signal in the first legacy service frequency band and the at least one converted MIMO channel signal and separating the converted MIMO channel signal from the non-MIMO signal;
conversion circuitry configured to receive the at least one converted MIMO channel signal and to frequency convert the at least one converted MIMO channel signal from the frequency close to the first legacy service frequency band back to the original MIMO frequency for transmission over one or more antennas.
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Accused Products
Abstract
A distributed antenna system includes a master unit configured to receive at least one set of multiple input multiple output (MIMO) channel signals from at least one signal source. The master unit is configured to frequency convert at least one of the MIMO channel signals to a different frequency from an original frequency, and combine the MIMO channel signals for transmission. An optical link couples the master unit with a unit remote from the master unit for transceiving the MIMO channel signals. Conversion circuitry is configured to frequency convert at least one of the first and second MIMO channel signals from the different frequency back to an original frequency for transmission over an antenna.
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Citations
20 Claims
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1. A distributed antenna system, comprising:
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a master unit configured to receive at least one set of multiple input multiple output (MIMO) channel signals at an original MIMO frequency from at least one signal source, the MIMO channel signals including at least a first MIMO channel signal and a second MIMO channel signal; the master unit further configured to receive at least one non-MIMO signal that has a frequency in a first legacy service frequency band and having a band processing circuit component configured for processing the signal in the first legacy service frequency band; the master unit being configured to frequency convert at least one of the first and second MIMO channel signals from the original MIMO frequency to a different frequency close to the first legacy service frequency band, the master unit further configured to process the at least one converted MIMO channel signal and the non-MIMO signal using the same band processing circuit component, and to combine non-MIMO signals in the first legacy service band and the first MIMO channel signal and the second MIMO channel signal for transmission; an optical link operably coupled with the master unit; a unit located remotely from the master unit and in communication with the master unit via the optical link for transceiving the MIMO channel signals and non-MIMO signals, the unit including band processing circuitry configured for processing together the non-MIMO signal in the first legacy service frequency band and the at least one converted MIMO channel signal and separating the converted MIMO channel signal from the non-MIMO signal; conversion circuitry configured to receive the at least one converted MIMO channel signal and to frequency convert the at least one converted MIMO channel signal from the frequency close to the first legacy service frequency band back to the original MIMO frequency for transmission over one or more antennas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 19)
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16. A distributed antenna system, comprising:
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a master unit configured to receive a plurality of sets of multiple input multiple output (MIMO) channel signals, at respective original first and second MIMO frequencies, each set of MIMO channel signals including at least a first MIMO channel signal and a second MIMO channel signal; the master unit further configured to receive a plurality of non-MIMO signals that have original frequencies in at least a first legacy service frequency band and a second legacy service frequency band and having a band processing circuit component configured for processing a signal in the first legacy service frequency band and a band processing circuit component configured for processing a signal in the second legacy service frequency band; the master unit being configured to frequency convert at least one of the first MIMO frequency channel signals from the first MIMO frequency to a different frequency close to the first legacy service frequency band and configured to frequency convert at least one of the second MIMO frequency channel signals from the second MIMO frequency to a different frequency close to the second legacy service frequency band; the master unit further configured to process the at least one converted first MIMO frequency channel signal and the first legacy service band non-MIMO signal using the same band processing circuit component and configured to process the at least one converted second MIMO frequency channel signal and the second legacy service band non-MIMO signal using the same band processing circuit component, and to combine signals in the first and second legacy service bands and the first MIMO frequency channel signals and the second MIMO frequency channel signals of the set for transmission; an optical link operably coupled with the master unit; at least one unit located remotely from the master unit and in communication with the master unit via the optical link for transceiving the sets of MIMO frequency signals and signals in the first and second legacy service bands between the remote unit and the master unit, the remote unit including a first band processing circuit component configured for processing together the first legacy service frequency band non-MIMO signal and the at least one converted first MIMO frequency channel signal and further including a second band processing circuit component configured for processing together the second legacy service frequency band non-MIMO signal and the at least one converted second MIMO frequency channel signal; the first band processing circuit component configured for separating the converted first MIMO frequency channel signals from the respective legacy service band non-MIMO signals and the second band processing circuit component configured for separating the converted second MIMO frequency channel signal the respective legacy service band non-MIMO signals; a plurality of conversion circuits, at least one conversion circuit configured to receive the at least one converted first MIMO frequency channel signal and to frequency convert the at least one converted first MIMO frequency channel signal from the frequency close to the first legacy service frequency band and back to the respective first MIMO frequency and at least one conversion circuit configured to receive the at least one converted second MIMO frequency channel signal and to frequency convert the at least one converted second MIMO frequency channel signal from the frequency close to the second legacy service frequency band and back to the respective second MIMO frequency for transmission over one or more antennas. - View Dependent Claims (17, 18, 20)
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Specification