Distributed gain network
A system and method for a distribution network is provided wherein cascaded power amplifiers with bypass switching are disposed along the branches of the network. The amplifiers may have an RF modem and a programmable digital computer that enables communication with a headend or a controlling computer as well as a bypass switch control for disabling the amplification function of the amplifiers. The amplifier may have a wireless communication system for communicating with individual subscriber's homes and communicating with a neighboring amplifier system for use in emergency situations or during installation and configuration of the network. The network comprised of the amplifiers may have redundant signal paths, using the wireless communication devices of the amplifiers, which may be used as backup signal paths for certain communications requiring high uptime such as telephony.
1. An amplifier for a distributed gain cable telecommunications network comprising:
an input line;
an output line;
an amplifier circuit;
a bypass circuit;
a first switch located between said input line and said amplifier circuit and capable of switching said input line to said amplifier circuit;
a second switch located between said output line and said amplifier circuit and capable of switching said output line to said amplifier circuit; and
a bypass circuit controller capable of switching said first switch and said second switch and such that said amplifier circuit is removed from said network, said bypass circuit controller further adapted to send a signal upstream or downstream to change at least one gain level of an upstream or downstream amplifier based on said switching mechanism.
2. The amplifier of claim 1 , wherein said amplifier circuit further comprises distribution taps.
3. The amplifier of claim 2 , wherein said distribution taps comprise a radio transceiver.
4. The amplifier of claim 2 , wherein said distribution taps comprise at least one power splitter.
5. The amplifier of claim 1 further comprising:
an RF modem and a programmable digital computer that enables communication between said amplifier and a headend or a controlling computer.
6. The amplifier of claim 5 further comprising:
a variable equalizer and a variable attenuator in communication with said programmable digital computer to vary controls during set up and configuration of said network.
7. The amplifier of claim 1 further comprising:
a battery back up for use when a primary power supply to said amplifier may be disrupted.
8. The amplifier of claim 1 further comprising:
an auto-location feature for detecting a position in space of said amplifier.
9. The amplifier of claim 8 , wherein said auto-location feature comprises a global positioning system receiver.
10. The amplifier of claim 1 , wherein said distributed gain cable telecommunications network modulates signals utilizing Ultra Wide Band Modulation, Discrete Carrier Modulation, Suppressed Carrier Modulation or Quadrature Amplitude Modulation.
11. A cable telecommunications network comprising:
a cascade of amplifiers with bypass switching disposed along branches of said cable telecommunications network, said amplifiers further comprising;
an input line;
an output line;
an amplifier circuit;
a bypass circuit;
a first switch located between said input line and said amplifier circuit and capable of switching said input line to said amplifier circuit;
a second switch located between said output line and said amplifier circuit and capable of switching said output line to said amplifier circuit; and
a bypass circuit controller capable of switching said first switch and said second switch and such that said amplifier circuit is removed from said network when power is disabled to said bypass controller circuits, said bypass circuit controller further adapted to send a signal upstream or downstream to change at least one pain level of an upstream or downstream amplifier based on said switching mechanism.
12. The cable telecommunications network of claim 11 , wherein said amplifiers within said cascade of amplifiers are spaced less than half the maximum possible distance each said amplifier is capable of traversing to provide effective downstream communications if any single said amplifier is by-passed.
13. The cable telecommunications network of claim 12 , wherein said by-passed amplifier is detected by status circuitry within said cable telecommunications network and a by-pass status is communicated to a headend.
14. The cable telecommunications network of claim 12 , wherein a location of said by-passed amplifier is detected by location circuitry within said cable telecommunications network said location is communicated to a headend.
15. An amplifier for a distributed gain cable telecommunications network comprising:
an input line;
an output line;
an amplifier circuit;
a bypass circuit;
a first switch located between said input line and said amplifier circuit and capable of switching said input line to said amplifier circuit;
a second switch located between said output line and said amplifier circuit and capable of switching said output line to said amplifier circuit; and
a bypass circuit controller capable of switching said first switch and said second switch and such that said amplifier circuit is removed from said network, said bypass circuit controller further adapted to receive a signal from another amplifier in said distributed gain cable telecommunications network and adjust the gains of said amplifier circuit such that signals on said input line or said output line are able to bypass said another amplifier.
16. An amplifier for a distributed gain cable telecommunications network comprising:
an input line;
an output line;
an amplifier circuit;
a bypass circuit;
a first switch located between said input line and said amplifier circuit and capable of switching said input line to said amplifier circuit;
a second switch located between said output line and said amplifier circuit and capable of switching said output line to said amplifier circuit; and
a bypass circuit controller capable of switching said first switch and said second switch and such that said amplifier circuit is removed from said network, said bypass circuit controller further adapted to detect that another amplifier in said distributed gain cable telecommunications network has entered a bypass mode, said bypass circuit controller further adapted to adjust the gains of said amplifier circuit such that signals on said input line or said output line are able to compensate for said another amplifier being in said bypass mode.