System and method for controlling the level of signals output to transmission media in a distributed antenna network
First Claim
1. A system for controlling the gain of signals transported over transmission media in a distributed antenna network, comprising:
- a plurality of remote antenna units, each of said remote antenna units including;
a signal level comparator for comparing a received signal level of a signal received by the remote antenna unit with a predetermined reference level and generating a single gain control signal, and a gain controller for adjusting the gain of the remote antenna unit based on the single gain control signal generated by its associated signal level comparator.
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Abstract
A system and method are provided for controlling the gain of signals transported over transmission media in a distributed antenna network. The system includes a plurality of remote antenna units where each remote antenna unit includes a signal level comparator for comparing the level of the signals received by the respective antenna unit with a predetermined reference level, and a gain controller for reducing the gain of the remote antenna unit when the signal level comparator determines that the level of the received signal exceeds said predetermined reference level. The system may accommodate TDMA systems when a gain controller is used that is fast enough to respond within the time slots of the received signals. As a result, the signal levels output from the remote antenna units are prevented from exceeding a maximum signal level.
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Citations
20 Claims
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1. A system for controlling the gain of signals transported over transmission media in a distributed antenna network, comprising:
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a plurality of remote antenna units, each of said remote antenna units including;
a signal level comparator for comparing a received signal level of a signal received by the remote antenna unit with a predetermined reference level and generating a single gain control signal, and a gain controller for adjusting the gain of the remote antenna unit based on the single gain control signal generated by its associated signal level comparator. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for controlling the gain of signals transported over transmission media in a distributed antenna network, comprising the steps of:
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(a) comparing a received signal level of a signal received by one of a plurality of remote antenna units with a predetermined reference level, the comparison being performed by a signal level comparator located in the one remote antenna unit and being represented by a single gain control signal; and
(b) adjusting the gain of the one remote antenna unit based on the single gain control signal generated by the signal level comparator associated with the one remote antenna unit. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A communication system, comprising:
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a plurality of remote antenna units, each remote antenna unit including a signal level comparator for comparing a received signal level of a signal received at its associated antenna unit to a predetermined threshold level and generating a single gain control signal based on the comparison, and including a gain controller for adjusting the gain of its associated antenna unit based on the single gain control signal; and
control means for receiving signals received and adjusted by each of the remote antenna units, and providing the received signals to intended destinations. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification