Approximate perturbation aided lattice encoding (APPLE) for G.fast and beyond
Approximate perturbation aided lattice encoding (APPLE) for G.fast and beyond
G.fast suffers from strong far-end crosstalk at high frequencies in cable binders containing a large number of twisted copper pairs. For the 212-MHz G.fast spectrum, the power penalty incurred by the conventional zero-forcing precoding-based linear vectoring (LV) scheme is far more substantial than it was over the 30-MHz VDSL2 spectrum. In this paper, we propose a novel non-LV (NLV) scheme based on Babai’s nearest plane approximation of the closest lattice point problem on the reduced lattice basis. Similar to the conventional Tomlinson–Harashima precoding (THP)-based NLV, the proposed approximate perturbation aided lattice encoding (APPLE) scheme closely approaches the dirty paper coding capacity which provided that the system employs a fully rate-adaptive power allocation policy per tone per pair. However, if the system employs a scalar power policy that is only rate-adaptive with respect to each tone, APPLE becomes capable of achieving a higher throughput per binder than THP. APPLE’s transmitter complexity is considerably lower than that of the conventional lattice encoding schemes (e.g., vector perturbation) and comparable to that of THP.
53438-53451
Zhang, Yangyishi
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Zhang, Rong
3be8f78f-f079-4a3f-a151-76ecd5f378f4
Al Rawi, Anas F.
3dc2fc54-4b70-40f1-9511-8fa054e307e7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Zhang, Yangyishi
d5f57adf-3d5c-4131-84b7-0113a4b2b2b7
Zhang, Rong
3be8f78f-f079-4a3f-a151-76ecd5f378f4
Al Rawi, Anas F.
3dc2fc54-4b70-40f1-9511-8fa054e307e7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Zhang, Yangyishi, Zhang, Rong, Al Rawi, Anas F. and Hanzo, Lajos
(2018)
Approximate perturbation aided lattice encoding (APPLE) for G.fast and beyond.
IEEE Access, 6, .
(doi:10.1109/ACCESS.2018.2871026).
Abstract
G.fast suffers from strong far-end crosstalk at high frequencies in cable binders containing a large number of twisted copper pairs. For the 212-MHz G.fast spectrum, the power penalty incurred by the conventional zero-forcing precoding-based linear vectoring (LV) scheme is far more substantial than it was over the 30-MHz VDSL2 spectrum. In this paper, we propose a novel non-LV (NLV) scheme based on Babai’s nearest plane approximation of the closest lattice point problem on the reduced lattice basis. Similar to the conventional Tomlinson–Harashima precoding (THP)-based NLV, the proposed approximate perturbation aided lattice encoding (APPLE) scheme closely approaches the dirty paper coding capacity which provided that the system employs a fully rate-adaptive power allocation policy per tone per pair. However, if the system employs a scalar power policy that is only rate-adaptive with respect to each tone, APPLE becomes capable of achieving a higher throughput per binder than THP. APPLE’s transmitter complexity is considerably lower than that of the conventional lattice encoding schemes (e.g., vector perturbation) and comparable to that of THP.
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APPLE
- Accepted Manuscript
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08468167
- Version of Record
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Accepted/In Press date: 3 September 2018
e-pub ahead of print date: 19 September 2018
Identifiers
Local EPrints ID: 423196
URI: http://eprints.soton.ac.uk/id/eprint/423196
ISSN: 2169-3536
PURE UUID: 8a802fcb-25c1-42b5-aa4d-806cbbd5094f
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Date deposited: 19 Sep 2018 16:30
Last modified: 18 Mar 2024 02:36
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Contributors
Author:
Yangyishi Zhang
Author:
Rong Zhang
Author:
Anas F. Al Rawi
Author:
Lajos Hanzo
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