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, o desempenho do protocolo soft-decision-and-forward (SDF) na rede de comunicação cooperativa com uma fonte, um relé e um destino, onde cada nó possui duas antenas de transmissão e recepção, é analisado em termos de a taxa de erro de bit (BER) obtida a partir da probabilidade de erro aos pares (PEP). Usando a função geradora de momento e Q-aproximação da função, o PEP do protocolo SDF é calculado e confirmamos que o SDF com duas antenas atinge a ordem de diversidade total. Para o canal de desvanecimento Rayleigh de variação lenta, a taxa de alocação de potência ideal pode ser determinada de modo a minimizar o PEP médio (ou BER). Devido à dificuldade de derivar o valor ótimo analiticamente, é considerada uma estratégia alternativa de maximizar a relação sinal-ruído (SNR) do produto de enlaces diretos e de retransmissão, que chamamos de alocação de potência subótima. Através de uma análise numérica, mostramos que a diferença de desempenho entre as estratégias de alocação de energia subótima e ótima é insignificante na região de alta SNR.
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Kyoung-Young SONG, Jong-Seon NO, Habong CHUNG, "Bit Error Rate and Power Allocation of Soft-Decision-and-Forward Cooperative Networks" in IEICE TRANSACTIONS on Communications,
vol. E94-B, no. 1, pp. 234-242, January 2011, doi: 10.1587/transcom.E94.B.234.
Abstract: In this paper, the performance of the soft-decision-and-forward (SDF) protocol in the cooperative communication network with one source, one relay, and one destination, where each node has two transmit and receive antennas, is analyzed in terms of the bit error rate (BER) obtained from the pairwise error probability (PEP). Using the moment generating function and Q-function approximation, the PEP of SDF protocol is calculated and we confirm that the SDF with two antennas achieves the full diversity order. For the slow-varying Rayleigh fading channel, the optimal power allocation ratio can be determined so as to minimize the average PEP (or BER). Due to the difficulty of deriving the optimal value analytically, an alternative strategy of maximizing the product signal-to-noise ratio (SNR) of direct and relay links, which we call the suboptimal power allocation, is considered. Through a numerical analysis, we show that the performance gap between the suboptimal and optimal power allocation strategies is negligible in the high SNR region.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E94.B.234/_p
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@ARTICLE{e94-b_1_234,
author={Kyoung-Young SONG, Jong-Seon NO, Habong CHUNG, },
journal={IEICE TRANSACTIONS on Communications},
title={Bit Error Rate and Power Allocation of Soft-Decision-and-Forward Cooperative Networks},
year={2011},
volume={E94-B},
number={1},
pages={234-242},
abstract={In this paper, the performance of the soft-decision-and-forward (SDF) protocol in the cooperative communication network with one source, one relay, and one destination, where each node has two transmit and receive antennas, is analyzed in terms of the bit error rate (BER) obtained from the pairwise error probability (PEP). Using the moment generating function and Q-function approximation, the PEP of SDF protocol is calculated and we confirm that the SDF with two antennas achieves the full diversity order. For the slow-varying Rayleigh fading channel, the optimal power allocation ratio can be determined so as to minimize the average PEP (or BER). Due to the difficulty of deriving the optimal value analytically, an alternative strategy of maximizing the product signal-to-noise ratio (SNR) of direct and relay links, which we call the suboptimal power allocation, is considered. Through a numerical analysis, we show that the performance gap between the suboptimal and optimal power allocation strategies is negligible in the high SNR region.},
keywords={},
doi={10.1587/transcom.E94.B.234},
ISSN={1745-1345},
month={January},}
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TY - JOUR
TI - Bit Error Rate and Power Allocation of Soft-Decision-and-Forward Cooperative Networks
T2 - IEICE TRANSACTIONS on Communications
SP - 234
EP - 242
AU - Kyoung-Young SONG
AU - Jong-Seon NO
AU - Habong CHUNG
PY - 2011
DO - 10.1587/transcom.E94.B.234
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E94-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2011
AB - In this paper, the performance of the soft-decision-and-forward (SDF) protocol in the cooperative communication network with one source, one relay, and one destination, where each node has two transmit and receive antennas, is analyzed in terms of the bit error rate (BER) obtained from the pairwise error probability (PEP). Using the moment generating function and Q-function approximation, the PEP of SDF protocol is calculated and we confirm that the SDF with two antennas achieves the full diversity order. For the slow-varying Rayleigh fading channel, the optimal power allocation ratio can be determined so as to minimize the average PEP (or BER). Due to the difficulty of deriving the optimal value analytically, an alternative strategy of maximizing the product signal-to-noise ratio (SNR) of direct and relay links, which we call the suboptimal power allocation, is considered. Through a numerical analysis, we show that the performance gap between the suboptimal and optimal power allocation strategies is negligible in the high SNR region.
ER -