METHOD AND SYSTEM FOR IMPROVING UPLINK PERFORMANCE
First Claim
1. A distributed antenna system comprisinga signal source adapted to send and receive one or more signals;
- two or more uplink branches coupled to an aggregation point, each uplink branch connected to at least one antenna;
the aggregation point comprising a selective noise blocking system adapted to detect uplink signal activity received by one or more of the uplink branches and to selectively block uplink signals from one or more uplink branches from passing through the aggregation point.
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Accused Products
Abstract
The present invention is directed to improvements for distributed antenna systems and more particularly to methods and systems for improving uplink communications. In one embodiment, Aggregation Point Noise Blocking provides for blocking or filtering the noise contributed by one or more of the branches coupled to an aggregation point that are not carrying the signal from a particular terminal. Signal activity from a given terminal on a particular branch can be identified and that information can be used to selectively block or filter the signal noise contributed by the other branches to an aggregation point. The selective blocking or filtering can also include an attenuation function to attenuate the signal and provide dynamic range smoothing. In another embodiment the signal can be regenerated to produce a signal that has a restored or very high SNR. An uplink regeneration block can be provided which demodulates the uplink signal to recover the transmitted information and then re-modulates the transmitted information to regenerate a signal at a restored or very high SNR.
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Citations
17 Claims
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1. A distributed antenna system comprising
a signal source adapted to send and receive one or more signals; -
two or more uplink branches coupled to an aggregation point, each uplink branch connected to at least one antenna; the aggregation point comprising a selective noise blocking system adapted to detect uplink signal activity received by one or more of the uplink branches and to selectively block uplink signals from one or more uplink branches from passing through the aggregation point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of processing uplink signals in a digital antenna system having two or more uplink branches, the method comprising
receiving at least one uplink signal on at least one of uplink branch; -
detecting uplink signal activity on one or more of the uplink branches; and selectively combining uplink signals received from each uplink branch as a function of the uplink signal activity detected. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification