MIMO-ADAPTED DISTRIBUTED ANTENNA SYSTEM
First Claim
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1. A method for propagating multiple signals over a distributed antenna system (DAS) network, comprising the steps of:
- a) providing a plurality n of original signals;
b) at a first endpoint of the DAS network, frequency shifting n−
1 of the signals into signals with n−
1 separate frequencies, with one signal left un-shifted in frequency;
c) propagating the n−
1 frequency shifted signals and the un-shifted frequency signal together over a single coaxial cable extending for at least part of a path from the first endpoint to a second endpoint of the DAS network; and
d) at the second endpoint, reconstructing the original signals.
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Abstract
Methods and systems for carrying different signals required for MIMO communication using a single coaxial cable between two endpoints of a distributed antenna system (DAS) network. Original MIMO signals having the same frequency are frequency-separated at a first endpoint of the network. The frequency-separated signals are propagated together over the single coaxial cable and then reconstructed to their original frequency at a second endpoint of the network.
132 Citations
14 Claims
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1. A method for propagating multiple signals over a distributed antenna system (DAS) network, comprising the steps of:
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a) providing a plurality n of original signals; b) at a first endpoint of the DAS network, frequency shifting n−
1 of the signals into signals with n−
1 separate frequencies, with one signal left un-shifted in frequency;c) propagating the n−
1 frequency shifted signals and the un-shifted frequency signal together over a single coaxial cable extending for at least part of a path from the first endpoint to a second endpoint of the DAS network; andd) at the second endpoint, reconstructing the original signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for propagating multiple signals over a distributed antenna system (DAS) network, comprising the steps of:
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a) providing a plurality n of original signals; b) at a first endpoint of the DAS network, frequency shifting n of the signals into signals with n separate frequencies; c) propagating the n frequency shifted signals over a single coaxial cable extending for at least part of a path from the first endpoint to a second endpoint of the DAS network; and d) at the second endpoint, reconstructing the original signals. e) providing DC power for powering the remote units through the coaxial cables. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification