Conference paper Open Access

Time-Domain Precoding for LTE-over-Copper Systems

Yezi Huang; Eduardo Medeiros; Thomas Magesacher; Stefan Host; Chenguang Lu; Per-Erik Eriksson; Per Odling; Per Ola Borjesson


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    <subfield code="a">© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.</subfield>
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    <subfield code="d">22-27 May 2016</subfield>
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    <subfield code="a">Chenguang Lu</subfield>
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    <subfield code="a">Per-Erik Eriksson</subfield>
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    <subfield code="a">Per Odling</subfield>
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    <subfield code="u">Lund University</subfield>
    <subfield code="a">Yezi Huang</subfield>
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    <subfield code="a">Time-Domain Precoding for LTE-over-Copper Systems</subfield>
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    <subfield code="a">5G-Crosshaul: The 5G Integrated fronthaul/backhaul</subfield>
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    <subfield code="a">&lt;p&gt;Crosstalk cancellation is a crucial issue for traditional digital subscriber line systems. For LTE-over-copper systems, however, the need for crosstalk cancellation varies depending on the analog fronthauling architecture and its parameters. A crosstalk handler that is decoupled as much as possible from&lt;br&gt;
the rest of the system architecture is thus preferred. Therefore, we propose a time-domain precoding scheme specifically in downstream direction to separate the precoding unit from the LTE signal flow, and perform crosstalk cancellation in an ondemand manner. Estimation of all direct and crosstalk paths is assisted by LTE cell-specific reference signals. The time-domain precoder transforms the interference channel into a crosstalkfree channel with identical direct paths, which allows for lowcomplexity inter-symbol interference mitigation. We evaluate the concept in terms of signal-to-noise ratio provided for LTE signals using measured wireline channel data.&lt;/p&gt;

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