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 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 being configured to frequency convert at least one of the first and second MIMO channel signals to a different frequency from the original frequency, and combine the first MIMO channel signal with the second MIMO channel signal for transmission;
an optical link operably coupled with the master unit;
at least one remote unit in communication with the master unit via the optical link for transceiving the MIMO channel signals between the remote unit and the master unit, the remote unit including at least one extension port configured to transceive at least one of the MIMO channel signals; and
an extension unit coupled to the at least one remote unit at the extension port, the extension unit being configured to receive at least one of the first and second MIMO channel signals and to frequency convert at least one of the first and second MIMO channel signals from the different frequency back to the original 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 remote for transceiving the MIMO channel signals. The remote unit is configured to receive the MIMO channel signals to be transmitted over antennas and includes an extension port configured to transceive at least one of the MIMO channel signals. An extension unit is coupled to the remote unit and 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 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 being configured to frequency convert at least one of the first and second MIMO channel signals to a different frequency from the original frequency, and combine the first MIMO channel signal with the second MIMO channel signal for transmission; an optical link operably coupled with the master unit; at least one remote unit in communication with the master unit via the optical link for transceiving the MIMO channel signals between the remote unit and the master unit, the remote unit including at least one extension port configured to transceive at least one of the MIMO channel signals; and an extension unit coupled to the at least one remote unit at the extension port, the extension unit being configured to receive at least one of the first and second MIMO channel signals and to frequency convert at least one of the first and second MIMO channel signals from the different frequency back to the original 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, 16)
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17. 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 frequencies, from at least one signal source, each set of MIMO channel signals including at least a first MIMO channel signal and a second MIMO channel signal, the master unit being configured to frequency convert at least one of the first and second MIMO channel signals of each set of MIMO channel signals to a different frequency from the respective original frequency of the set, and combine the first MIMO channel signal with the second MIMO channel signal of the set for transmission; an optical link operably coupled with the master unit; at least one remote unit in communication with the master unit via the optical link for transceiving the sets of MIMO channel signals between the remote unit and the master unit, the remote unit including at least one extension port configured to transceive at least one of the MIMO signals; and a plurality of extension units coupled to the at least one remote unit at the extension port, each extension unit being configured to receive at least one MIMO channel signals from a set of MIMO channel signals and to frequency convert the at least one MIMO channel signal of the respective set of MIMO channel signals from the different frequency back to the respective original frequency for the set of MIMO channel signals for transmission over one or more antennas. - View Dependent Claims (18, 19, 20)
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Specification