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Discrete multi-tone digital subscriber loop performance in the face of impulsive noise

Discrete multi-tone digital subscriber loop performance in the face of impulsive noise
Discrete multi-tone digital subscriber loop performance in the face of impulsive noise
As an important solution to "the last mile" access, Digital Subscriber Loops (DSL) are still maintained in a huge plant to support low-cost but high-quality broadband network access through telephone lines. The Discrete multi-tone (DMT) transmissions constitute a baseband version of the ubiquitous orthogonal frequency division multiplexing (OFDM). While the DMT is ideally suited to deal with the frequency selective channel in DSL, the presence of bursty impulsive noise tends to severely degrade the transmission performance. In this paper, we analyse the statistics of impulsive noise and its effects on the received signals, with the aid of a hidden semi-Markov process. The closed-form BER expression is derived for the DMT system for $Q$-ary quadrature amplitude modulation (QAM) under practical noise conditions and for measured dispersive DSL channels. Instead of relying on the simplified stationary and impulsive noise process, our noise model considers both the temporal and spectral characteristics, based on the measurement results. The simulation results confirm the accuracy of the formulas derived and quantify the impact both of the impulsive noise and of the dispersive channel in DSL.
Bai, Tong
15e00a16-2ade-4fdb-a4d9-a490a526669a
Zhang, Hongming
ebd930db-9cd8-43ff-8b73-92c1d7f0108b
Zhang, Rong
3be8f78f-f079-4a3f-a151-76ecd5f378f4
Yang, Lieliang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Al Rawi, Anas F.
88c37049-0173-42d7-8c2c-cc939df0536b
Zhang, Jiankang
6add829f-d955-40ca-8214-27a039defc8a
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Bai, Tong
15e00a16-2ade-4fdb-a4d9-a490a526669a
Zhang, Hongming
ebd930db-9cd8-43ff-8b73-92c1d7f0108b
Zhang, Rong
3be8f78f-f079-4a3f-a151-76ecd5f378f4
Yang, Lieliang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Al Rawi, Anas F.
88c37049-0173-42d7-8c2c-cc939df0536b
Zhang, Jiankang
6add829f-d955-40ca-8214-27a039defc8a
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Bai, Tong, Zhang, Hongming, Zhang, Rong, Yang, Lieliang, Al Rawi, Anas F., Zhang, Jiankang and Hanzo, Lajos (2017) Discrete multi-tone digital subscriber loop performance in the face of impulsive noise. IEEE Access. (doi:10.1109/ACCESS.2017.2712359).

Record type: Article

Abstract

As an important solution to "the last mile" access, Digital Subscriber Loops (DSL) are still maintained in a huge plant to support low-cost but high-quality broadband network access through telephone lines. The Discrete multi-tone (DMT) transmissions constitute a baseband version of the ubiquitous orthogonal frequency division multiplexing (OFDM). While the DMT is ideally suited to deal with the frequency selective channel in DSL, the presence of bursty impulsive noise tends to severely degrade the transmission performance. In this paper, we analyse the statistics of impulsive noise and its effects on the received signals, with the aid of a hidden semi-Markov process. The closed-form BER expression is derived for the DMT system for $Q$-ary quadrature amplitude modulation (QAM) under practical noise conditions and for measured dispersive DSL channels. Instead of relying on the simplified stationary and impulsive noise process, our noise model considers both the temporal and spectral characteristics, based on the measurement results. The simulation results confirm the accuracy of the formulas derived and quantify the impact both of the impulsive noise and of the dispersive channel in DSL.

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PA_IN_DSL - Accepted Manuscript
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More information

Accepted/In Press date: 26 May 2017
e-pub ahead of print date: 6 June 2017

Identifiers

Local EPrints ID: 412380
URI: http://eprints.soton.ac.uk/id/eprint/412380
PURE UUID: 549ab6ea-b5c2-4847-b08c-517985f886a6
ORCID for Lieliang Yang: ORCID iD orcid.org/0000-0002-2032-9327
ORCID for Jiankang Zhang: ORCID iD orcid.org/0000-0001-5316-1711
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 17 Jul 2017 13:34
Last modified: 17 Dec 2019 02:03

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