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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
Realizamos análise de probabilidade de erro do sistema de retransmissão Amplify-and-Forward (AF) de ganho fixo OFDM não codificado com permutação de subportadora (SCP). Dois esquemas de SCP, denominados: o SCP do melhor para o melhor (BTB SCP) e o SCP do melhor para o pior (BTW SCP) são considerados. São derivadas expressões de forma fechada para a taxa de erro de bit (BER) dos métodos SCP acima. Os resultados numéricos manifestam que estes esquemas SCP podem superar uns aos outros, dependendo das condições médias do canal dos enlaces envolvidos. Ou seja, o SCP BTB é melhor em valores baixos de relação sinal-ruído (SNR), enquanto o SCP BTW prevalece no regime de SNR médio e alto. Assim, pode-se concluir que os sistemas de retransmissão OFDM AF podem mudar do SCP BTB para o SCP BTW, a fim de alcançar o desempenho ideal do BER. Além disso, usando as funções de densidade de probabilidade SNR ponta a ponta derivadas (PDF), são obtidos limites superiores rígidos para as capacidades ergódicas de ambos os esquemas SCP.
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Enis KOCAN, Milica PEJANOVIC-DJURISIC, Diomidis S. MICHALOPOULOS, George K. KARAGIANNIDIS, "Performance Evaluation of OFDM Amplify-and-Forward Relay System with Subcarrier Permutation" in IEICE TRANSACTIONS on Communications,
vol. E93-B, no. 5, pp. 1216-1223, May 2010, doi: 10.1587/transcom.E93.B.1216.
Abstract: We perform error probability analysis of the uncoded OFDM fixed gain Amplify-and-Forward (AF) relaying system with subcarrier permutation (SCP). Two SCP schemes, named: the best-to-best SCP (BTB SCP) and the best-to-worst SCP (BTW SCP) are considered. Closed-form expressions for the bit error rate (BER) of the above SCP methods are derived. Numerical results manifest that these SCP schemes may outperform one another, depending on the average channel conditions of the links involved. That is, BTB SCP is better at low signal-to-noise ratio (SNR) values, while BTW SCP prevails in the medium and high SNR regime. Thus, it could be concluded that OFDM AF relaying systems may switch from the BTB SCP to BTW SCP in order to achieve optimum BER performance. Moreover, using the derived end-to-end SNR probability density functions (PDF), tight upper bounds for the ergodic capacities of both SCP schemes are obtained.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E93.B.1216/_p
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@ARTICLE{e93-b_5_1216,
author={Enis KOCAN, Milica PEJANOVIC-DJURISIC, Diomidis S. MICHALOPOULOS, George K. KARAGIANNIDIS, },
journal={IEICE TRANSACTIONS on Communications},
title={Performance Evaluation of OFDM Amplify-and-Forward Relay System with Subcarrier Permutation},
year={2010},
volume={E93-B},
number={5},
pages={1216-1223},
abstract={We perform error probability analysis of the uncoded OFDM fixed gain Amplify-and-Forward (AF) relaying system with subcarrier permutation (SCP). Two SCP schemes, named: the best-to-best SCP (BTB SCP) and the best-to-worst SCP (BTW SCP) are considered. Closed-form expressions for the bit error rate (BER) of the above SCP methods are derived. Numerical results manifest that these SCP schemes may outperform one another, depending on the average channel conditions of the links involved. That is, BTB SCP is better at low signal-to-noise ratio (SNR) values, while BTW SCP prevails in the medium and high SNR regime. Thus, it could be concluded that OFDM AF relaying systems may switch from the BTB SCP to BTW SCP in order to achieve optimum BER performance. Moreover, using the derived end-to-end SNR probability density functions (PDF), tight upper bounds for the ergodic capacities of both SCP schemes are obtained.},
keywords={},
doi={10.1587/transcom.E93.B.1216},
ISSN={1745-1345},
month={May},}
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TY - JOUR
TI - Performance Evaluation of OFDM Amplify-and-Forward Relay System with Subcarrier Permutation
T2 - IEICE TRANSACTIONS on Communications
SP - 1216
EP - 1223
AU - Enis KOCAN
AU - Milica PEJANOVIC-DJURISIC
AU - Diomidis S. MICHALOPOULOS
AU - George K. KARAGIANNIDIS
PY - 2010
DO - 10.1587/transcom.E93.B.1216
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E93-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2010
AB - We perform error probability analysis of the uncoded OFDM fixed gain Amplify-and-Forward (AF) relaying system with subcarrier permutation (SCP). Two SCP schemes, named: the best-to-best SCP (BTB SCP) and the best-to-worst SCP (BTW SCP) are considered. Closed-form expressions for the bit error rate (BER) of the above SCP methods are derived. Numerical results manifest that these SCP schemes may outperform one another, depending on the average channel conditions of the links involved. That is, BTB SCP is better at low signal-to-noise ratio (SNR) values, while BTW SCP prevails in the medium and high SNR regime. Thus, it could be concluded that OFDM AF relaying systems may switch from the BTB SCP to BTW SCP in order to achieve optimum BER performance. Moreover, using the derived end-to-end SNR probability density functions (PDF), tight upper bounds for the ergodic capacities of both SCP schemes are obtained.
ER -