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".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Neste artigo, analisamos o impacto dos erros de estimativa de canal em uma rede de retransmissão bidirecional (TWRN) baseada em amplificação e encaminhamento (AF), onde a modulação adaptativa (AM) é empregada no caminho de retransmissão individual. Em particular a degradação do desempenho causada pelo erro de estimativa do canal é investigada em Nakagami-m canais desbotados. Primeiro derivamos uma relação sinal-ruído (SNR) ponta a ponta, uma função de distribuição cumulativa e uma função de densidade de probabilidade na presença de erro de estimativa de canal para o TWRN baseado em AF com modulação adaptativa (TWRN-AM) . Utilizando as estatísticas SNR derivadas, apresentamos expressões precisas da eficiência espectral média e das taxas de erro de bit com uma restrição de interrupção na qual a transmissão não ocorre durante eventos de interrupção de comunicações bidirecionais. Com base em nossos resultados analíticos derivados, é proposto um esquema ideal de alocação de energia para TWRN-AM para melhorar a eficiência espectral média, minimizando interrupções do sistema.
Kyu-Sung HWANG
Kyungil University
Chang Kyung SUNG
CSIRO
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Kyu-Sung HWANG, Chang Kyung SUNG, "Link Adaptation of Two-Way AF Relaying Network with Channel Estimation Error over Nakagami-m Fading Channel" in IEICE TRANSACTIONS on Communications,
vol. E102-B, no. 3, pp. 581-591, March 2019, doi: 10.1587/transcom.2018EBP3089.
Abstract: In this paper, we analyze the impact of channel estimation errors in an amplify-and-forward (AF)-based two-way relaying network (TWRN) where adaptive modulation (AM) is employed in individual relaying path. In particular, the performance degradation caused by channel estimation error is investigated over Nakagami-m fading channels. We first derive an end-to-end signal-to-noise ratio (SNR), a cumulative distribution function, and a probability density function in the presence of channel estimation error for the AF-based TWRN with adaptive modulation (TWRN-AM). By utilizing the derived SNR statistics, we present accurate expressions of the average spectral efficiency and bit error rates with an outage-constraint in which transmission does not take place during outage events of bidirectional communications. Based on our derived analytical results, an optimal power allocation scheme for TWRN-AM is proposed to improve the average spectral efficiency by minimizing system outages.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2018EBP3089/_p
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@ARTICLE{e102-b_3_581,
author={Kyu-Sung HWANG, Chang Kyung SUNG, },
journal={IEICE TRANSACTIONS on Communications},
title={Link Adaptation of Two-Way AF Relaying Network with Channel Estimation Error over Nakagami-m Fading Channel},
year={2019},
volume={E102-B},
number={3},
pages={581-591},
abstract={In this paper, we analyze the impact of channel estimation errors in an amplify-and-forward (AF)-based two-way relaying network (TWRN) where adaptive modulation (AM) is employed in individual relaying path. In particular, the performance degradation caused by channel estimation error is investigated over Nakagami-m fading channels. We first derive an end-to-end signal-to-noise ratio (SNR), a cumulative distribution function, and a probability density function in the presence of channel estimation error for the AF-based TWRN with adaptive modulation (TWRN-AM). By utilizing the derived SNR statistics, we present accurate expressions of the average spectral efficiency and bit error rates with an outage-constraint in which transmission does not take place during outage events of bidirectional communications. Based on our derived analytical results, an optimal power allocation scheme for TWRN-AM is proposed to improve the average spectral efficiency by minimizing system outages.},
keywords={},
doi={10.1587/transcom.2018EBP3089},
ISSN={1745-1345},
month={March},}
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TY - JOUR
TI - Link Adaptation of Two-Way AF Relaying Network with Channel Estimation Error over Nakagami-m Fading Channel
T2 - IEICE TRANSACTIONS on Communications
SP - 581
EP - 591
AU - Kyu-Sung HWANG
AU - Chang Kyung SUNG
PY - 2019
DO - 10.1587/transcom.2018EBP3089
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E102-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 2019
AB - In this paper, we analyze the impact of channel estimation errors in an amplify-and-forward (AF)-based two-way relaying network (TWRN) where adaptive modulation (AM) is employed in individual relaying path. In particular, the performance degradation caused by channel estimation error is investigated over Nakagami-m fading channels. We first derive an end-to-end signal-to-noise ratio (SNR), a cumulative distribution function, and a probability density function in the presence of channel estimation error for the AF-based TWRN with adaptive modulation (TWRN-AM). By utilizing the derived SNR statistics, we present accurate expressions of the average spectral efficiency and bit error rates with an outage-constraint in which transmission does not take place during outage events of bidirectional communications. Based on our derived analytical results, an optimal power allocation scheme for TWRN-AM is proposed to improve the average spectral efficiency by minimizing system outages.
ER -