Transporting radio signals using a low frequency band over copper cables
First Claim
1. A method for transporting radio signals over copper cables, comprising:
- receiving at least one RF signal in a radio-frequency band centered around an RF central frequency,downconverting said at least one RF signal from the RF band to a LF band having same bandwidth of the RF band and being centered around a LF central frequency being lower than the RF central frequency, andtransmitting the downconverted RF signal on a copper cable link provided in a copper cable, each copper cable link comprising at least one twisted pair,wherein the cable link and the LF band are selected among a plurality of LF frequency bands and a plurality of copper cable links according to a predetermined criteria which minimizes the far-end crosstalk.
1 Assignment
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Accused Products
Abstract
A conversion unit configured for downconverting a RF radio signal from a first RF band to a first LF band, and up-converting an electric signal from a second LF band to a second RF band; the LF and RF bands have same bandwidth, while RF bands are centered on central frequencies being higher than the LF central frequencies of the LF bands. The conversion unit selects the copper cable link and the first LF band on which transmitting the downconverted RF signal according to a predetermined criteria between a plurality of RF frequency bands and the copper cable links. Moreover, the conversion unit selects the RF connection and the second RF band on which transmitting the upconverted LF signal according to a predetermined criteria between said plurality of RF connections and a plurality of RF bands.
5 Citations
17 Claims
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1. A method for transporting radio signals over copper cables, comprising:
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receiving at least one RF signal in a radio-frequency band centered around an RF central frequency, downconverting said at least one RF signal from the RF band to a LF band having same bandwidth of the RF band and being centered around a LF central frequency being lower than the RF central frequency, and transmitting the downconverted RF signal on a copper cable link provided in a copper cable, each copper cable link comprising at least one twisted pair, wherein the cable link and the LF band are selected among a plurality of LF frequency bands and a plurality of copper cable links according to a predetermined criteria which minimizes the far-end crosstalk. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for transporting radio signals over copper cables, comprising:
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receiving at least one RF signal in a radio-frequency band centered around an RF central frequency, downconverting said at least one RF signal from the RF band to a LF band having a same bandwidth of the RF band and being centered around a LF central frequency lower than the RF central frequency, and transmitting the downconverted RF signal on two or more copper cable links provided in a copper cable, each copper cable link comprising at least one twisted pair, wherein the two or more copper cable links and the LF band are selected according to a predetermined criteria among a plurality of LF frequency bands and a plurality of copper cable links.
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11. A method for transmitting signals transported over copper cables, comprising:
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receiving an electric signal over a copper cable link, which comprises at least a twisted pair, the electric signal being transmitted in a LF band centered around a LF central frequency, up-converting the received electric signal from the LF band to a RF band having same bandwidth of the LF band and being centered around a RF central frequency being higher than the LF central frequency, and transmitting the up-converted electric signal to an antenna for radio transmission, wherein the antenna and the RF band are selected among a plurality of antennas and a plurality of frequency bands according to a predetermined criteria which minimizes the far-end crosstalk.
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12. A conversion unit comprising:
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an RF interface comprising a plurality of RF connections for receiving and transmitting RF signals in RF bands, an LF interface for receiving and transmitting LF signals in LF bands over a plurality of copper cable links connected to the LF interface, wherein the conversion unit is configured for downconverting a RF radio signal received at the RF interface in a first RF band from the first RF band to a first LF band of the LF bands, up-converting an electric signal received via one of the copper cable links in a second LF band from the second LF band to a second RF band, wherein the first and second LF bands have the same bandwidth respectively of the first and second RF bands and wherein the first and second RF bands are centered on respective RF central frequencies being higher than the LF central frequencies of the first and second LF bands, and wherein the conversion unit is adapted to select the copper cable link and the first LF band on which transmitting the downconverted RF signal according to a predetermined criteria between a plurality of RF frequency bands and said plurality of copper cable links, and to select the RF connection and the second RF band on which transmitting the upconverted LF signal according to a predetermined criteria between said plurality of RF connections and a plurality of RF bands. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification