Distributed low-density lattice codes

B. Chen; D.N.K. Jayakody; M.F. Flanagan

doi:10.1109/LCOMM.2015.2497679

Distributed low-density lattice codes

B. Chen, D.N.K. Jayakody, M.F. Flanagan

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

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This letter presents a novel distributed LDLC (D-LDLC) relaying scheme for the classical relay channel. The relay node decodes LDLC packets from the source and forwards an additional parity message to the destination. The destination then performs joint decoding in order to exploit the available coding gain as well as diversity gain. First, assuming AWGN links, density evolution is used to optimize the noise threshold of the overall parity-check matrix, and this method is shown to produce good finite-length D-LDLC designs. Then, we provide results for the optimized D-LDLCs under Rayleigh fading channel conditions. Joint decoding based on D-LDLC is shown to provide approximately 3 dB gain over distributed 4-PAM turbo codes under the same conditions (data rate and overall transmission power).

Originele taal-2	Engels
Pagina's (van-tot)	77-80
Tijdschrift	IEEE Communications Letters
Volume	20
Nummer van het tijdschrift	1
DOI's	https://doi.org/10.1109/LCOMM.2015.2497679
Status	Gepubliceerd - jan. 2016

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title = "Distributed low-density lattice codes",

abstract = "This letter presents a novel distributed LDLC (D-LDLC) relaying scheme for the classical relay channel. The relay node decodes LDLC packets from the source and forwards an additional parity message to the destination. The destination then performs joint decoding in order to exploit the available coding gain as well as diversity gain. First, assuming AWGN links, density evolution is used to optimize the noise threshold of the overall parity-check matrix, and this method is shown to produce good finite-length D-LDLC designs. Then, we provide results for the optimized D-LDLCs under Rayleigh fading channel conditions. Joint decoding based on D-LDLC is shown to provide approximately 3 dB gain over distributed 4-PAM turbo codes under the same conditions (data rate and overall transmission power).",

keywords = "Low-density lattice codes (LDLCs), distributed channel coding, coded cooperation, relay channel",

author = "B. Chen and D.N.K. Jayakody and M.F. Flanagan",

year = "2016",

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doi = "10.1109/LCOMM.2015.2497679",

language = "English",

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AU - Chen, B.

AU - Jayakody, D.N.K.

AU - Flanagan, M.F.

PY - 2016/1

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N2 - This letter presents a novel distributed LDLC (D-LDLC) relaying scheme for the classical relay channel. The relay node decodes LDLC packets from the source and forwards an additional parity message to the destination. The destination then performs joint decoding in order to exploit the available coding gain as well as diversity gain. First, assuming AWGN links, density evolution is used to optimize the noise threshold of the overall parity-check matrix, and this method is shown to produce good finite-length D-LDLC designs. Then, we provide results for the optimized D-LDLCs under Rayleigh fading channel conditions. Joint decoding based on D-LDLC is shown to provide approximately 3 dB gain over distributed 4-PAM turbo codes under the same conditions (data rate and overall transmission power).

AB - This letter presents a novel distributed LDLC (D-LDLC) relaying scheme for the classical relay channel. The relay node decodes LDLC packets from the source and forwards an additional parity message to the destination. The destination then performs joint decoding in order to exploit the available coding gain as well as diversity gain. First, assuming AWGN links, density evolution is used to optimize the noise threshold of the overall parity-check matrix, and this method is shown to produce good finite-length D-LDLC designs. Then, we provide results for the optimized D-LDLCs under Rayleigh fading channel conditions. Joint decoding based on D-LDLC is shown to provide approximately 3 dB gain over distributed 4-PAM turbo codes under the same conditions (data rate and overall transmission power).

KW - Low-density lattice codes (LDLCs)

KW - distributed channel coding

KW - coded cooperation

KW - relay channel

U2 - 10.1109/LCOMM.2015.2497679

DO - 10.1109/LCOMM.2015.2497679

M3 - Article

SN - 1089-7798

VL - 20

SP - 77

EP - 80

JO - IEEE Communications Letters

JF - IEEE Communications Letters

IS - 1

ER -

Distributed low-density lattice codes

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