OPTICAL FIBER-BASED DISTRIBUTED COMMUNICATIONS COMPONENTS, SYSTEMS, AND METHODS EMPLOYING WAVELENGTH DIVISION MULTIPLEXING (WDM) FOR ENHANCED UPGRADABILITY
First Claim
1. An optical fiber-based distributed communications system, comprising:
- a plurality of downlink optical transmitters configured to receive downlink electrical radio frequency (RF) signals from a plurality of RF sources and convert the downlink electrical RF signals into downlink optical RF signals; and
a wavelength division multiplexer configured to multiplex the downlink optical RF signals into a plurality of downlink wavelengths over a common downlink optical fiber configured to be connected to a plurality of remote antenna units (RAUs).
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Abstract
Optical fiber-based distributed communications components and systems employing wavelength division multiplexing (WDM) for enhanced upgradability. The system comprises a plurality of downlink optical transmitters configured to receive downlink electrical radio frequency (RF) signals from a plurality of RF sources and convert the downlink electrical RF signals into downlink optical RF signals. The system also has a wavelength division multiplexer configured to multiplex downlink optical RF signals into a plurality of downlink wavelengths over a common downlink optical fiber connected to a plurality of remote antenna units (RAUs). In this manner, additional downlink optical fibers are not required to support providing additional RAUs in the system. Wavelength-division de-multiplexing can avoid providing additional uplink optical fibers to distribute uplink signals to RAUs added in the system.
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Citations
27 Claims
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1. An optical fiber-based distributed communications system, comprising:
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a plurality of downlink optical transmitters configured to receive downlink electrical radio frequency (RF) signals from a plurality of RF sources and convert the downlink electrical RF signals into downlink optical RF signals; and a wavelength division multiplexer configured to multiplex the downlink optical RF signals into a plurality of downlink wavelengths over a common downlink optical fiber configured to be connected to a plurality of remote antenna units (RAUs). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of distributing communication signals in an optical fiber-based distributed communications system, comprising:
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receiving downlink electrical radio frequency (RF) signals from a plurality of RF sources; converting the downlink electrical RF signals into downlink optical RF signals; and wavelength division multiplexing the downlink optical RF signals into a plurality of downlink wavelengths over a common downlink optical fiber. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification