The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Neste artigo é estudado o relé baseado em codificação de rede para canal multiacesso. No sistema, dois nós enviam mensagens para um ponto de acesso (AP) comum. Um relé auxilia os dois nós encaminhando uma versão codificada da rede das mensagens. O AP realiza decodificação conjunta de canal e rede para recuperar as duas mensagens originais de três sinais recebidos. Dois esquemas, codificação de rede suave (SoftNC) e codificação de rede turbo (TurboNC), ambos focados em codificação de rede exclusiva bit a bit ou baseada em (XOR), são propostos para salvar mensagens de sinais errados. SoftNC é simples e compatível com versões anteriores da pilha de protocolos existentes de redes sem fio e reduz erros de pacotes por combinação de proporção máxima (MRC). O TurboNC melhora a eficiência do canal, permitindo que o nó de retransmissão transmita apenas bits de verificação de paridade da mensagem XOR intercalada, onde a confiabilidade é mantida pela decodificação iterativa. Os resultados da simulação mostram que, em comparação com o esquema de diversidade de caminhos da camada de rede, tanto o SoftNC quanto o TurboNC melhoram muito a confiabilidade, e o TurboNC também atinge um rendimento muito maior. Os esquemas propostos são adequados para melhorar o desempenho das redes locais sem fio (WLAN).
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Copiar
Suhua TANG, Jun CHENG, Chen SUN, Ryu MIURA, Sadao OBANA, "Joint Channel and Network Decoding for XOR-Based Relay in Multi-Access Channel" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 11, pp. 3470-3477, November 2009, doi: 10.1587/transcom.E92.B.3470.
Abstract: In this paper network coding based relay for multi-access channel is studied. In the system, two nodes send messages to a common access point (AP). A relay assists the two nodes by forwarding a network coded version of the messages. The AP performs joint channel and network decoding to recover the two original messages from three received signals. Two schemes, soft network coding (SoftNC) and turbo network coding (TurboNC), both focusing on bitwise exclusive or (XOR) based network coding, are proposed to salvage messages from erroneous signals. SoftNC is simple and backward compatible with existing protocol stack of wireless networks, and reduces packet errors by maximal ratio combining (MRC). TurboNC improves channel efficiency by letting the relay node transmit only parity check bits of the interleaved XORed message, where reliability is retained by iterative decoding. Simulation results show that compared with the network-layer path diversity scheme, both SoftNC and TurboNC greatly improve the reliability, and TurboNC also achieves a much higher throughput. The proposed schemes are suitable for improving the performance of wireless local area networks (WLAN).
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.3470/_p
Copiar
@ARTICLE{e92-b_11_3470,
author={Suhua TANG, Jun CHENG, Chen SUN, Ryu MIURA, Sadao OBANA, },
journal={IEICE TRANSACTIONS on Communications},
title={Joint Channel and Network Decoding for XOR-Based Relay in Multi-Access Channel},
year={2009},
volume={E92-B},
number={11},
pages={3470-3477},
abstract={In this paper network coding based relay for multi-access channel is studied. In the system, two nodes send messages to a common access point (AP). A relay assists the two nodes by forwarding a network coded version of the messages. The AP performs joint channel and network decoding to recover the two original messages from three received signals. Two schemes, soft network coding (SoftNC) and turbo network coding (TurboNC), both focusing on bitwise exclusive or (XOR) based network coding, are proposed to salvage messages from erroneous signals. SoftNC is simple and backward compatible with existing protocol stack of wireless networks, and reduces packet errors by maximal ratio combining (MRC). TurboNC improves channel efficiency by letting the relay node transmit only parity check bits of the interleaved XORed message, where reliability is retained by iterative decoding. Simulation results show that compared with the network-layer path diversity scheme, both SoftNC and TurboNC greatly improve the reliability, and TurboNC also achieves a much higher throughput. The proposed schemes are suitable for improving the performance of wireless local area networks (WLAN).},
keywords={},
doi={10.1587/transcom.E92.B.3470},
ISSN={1745-1345},
month={November},}
Copiar
TY - JOUR
TI - Joint Channel and Network Decoding for XOR-Based Relay in Multi-Access Channel
T2 - IEICE TRANSACTIONS on Communications
SP - 3470
EP - 3477
AU - Suhua TANG
AU - Jun CHENG
AU - Chen SUN
AU - Ryu MIURA
AU - Sadao OBANA
PY - 2009
DO - 10.1587/transcom.E92.B.3470
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 2009
AB - In this paper network coding based relay for multi-access channel is studied. In the system, two nodes send messages to a common access point (AP). A relay assists the two nodes by forwarding a network coded version of the messages. The AP performs joint channel and network decoding to recover the two original messages from three received signals. Two schemes, soft network coding (SoftNC) and turbo network coding (TurboNC), both focusing on bitwise exclusive or (XOR) based network coding, are proposed to salvage messages from erroneous signals. SoftNC is simple and backward compatible with existing protocol stack of wireless networks, and reduces packet errors by maximal ratio combining (MRC). TurboNC improves channel efficiency by letting the relay node transmit only parity check bits of the interleaved XORed message, where reliability is retained by iterative decoding. Simulation results show that compared with the network-layer path diversity scheme, both SoftNC and TurboNC greatly improve the reliability, and TurboNC also achieves a much higher throughput. The proposed schemes are suitable for improving the performance of wireless local area networks (WLAN).
ER -