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
Dalam makalah ini, kebarangkalian terputus dan susunan kepelbagaian kerjasama nyahkod dan ke hadapan (DF) oportunistik dianalisis di bawah saluran pudar Rayleigh, di mana kesan ralat anggaran saluran, kelewatan maklum balas pemilihan geganti dan ketersediaan pautan langsung antara sumber dan destinasi dipertimbangkan secara menyeluruh. Ungkapan bentuk tertutup kebarangkalian gangguan dalam kawasan nisbah isyarat-ke-bunyi (SNR) tinggi diperoleh serta susunan kepelbagaian. Keputusan teori menunjukkan bahawa susunan kepelbagaian yang boleh dicapai adalah sifar apabila ralat anggaran saluran wujud, dan kesimpulan ini tidak kira sama ada pautan terus tersedia, walaupun maklum balas pemilihan geganti adalah bebas kelewatan. Untuk senario anggaran saluran yang sempurna, susunan kepelbagaian yang boleh dicapai adalah berkaitan dengan nombor geganti yang berpotensi K, pekali korelasi kelewatan saluran ρd dan ketersediaan pautan langsung. Jika maklum balas pemilihan geganti tidak ditangguhkan, iaitu, ρd = 1, susunan kepelbagaian ialah K apabila pautan langsung disekat, dan ia menjadi K+1 apabila pautan langsung tersedia. Untuk maklum balas pemilihan geganti tertunda, iaitu, ρd < 1, susunan kepelbagaian yang boleh dicapai hanya berkaitan dengan ketersediaan pautan langsung. Dalam kes ini, jika pautan langsung tidak wujud, tertib kepelbagaian ialah 1, jika tidak tertib kepelbagaian 2 boleh diperolehi. Keputusan simulasi mengesahkan keputusan analisis kebarangkalian gangguan dan susunan kepelbagaian.
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Salinan
Changqing YANG, Wenbo WANG, Shuping CHEN, Mugen PENG, "Outage Performance of Opportunistic Decode-and-Forward Cooperation with Imperfect Channel State Information" in IEICE TRANSACTIONS on Communications,
vol. E93-B, no. 11, pp. 3083-3092, November 2010, doi: 10.1587/transcom.E93.B.3083.
Abstract: In this paper, the outage probability and diversity order of opportunistic decode-and-forward (DF) cooperation are analyzed under Rayleigh fading channels, where the impacts of channel estimation error, relay selection feedback delay and the availability of the direct link between the source and the destination are considered comprehensively. The closed-form expressions of outage probability in the high signal-to-noise ratio (SNR) region are derived as well as the diversity order. The theoretical results demonstrate that the achievable diversity order is zero when channel estimation error exists, and this conclusion holds no matter whether the direct link is available, even if the relay selection feedback is delay-free. For the perfect channel estimation scenario, the achievable diversity order is related to the potential relay number K, the channel delay correlation coefficient ρd and the availability of the direct link. If relay selection feedback is not delayed, i.e., ρd = 1, the diversity order is K when the direct link is blocked, and it becomes K+1 when the direct link is available. For delayed relay selection feedback, i.e., ρd < 1, the diversity order achievable is only related to the availability of the direct link. In this case, if the direct link does not exist, the diversity order is 1, otherwise the diversity order of 2 can be obtained. Simulation results verify the analytical results of outage probability and diversity order.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E93.B.3083/_p
Salinan
@ARTICLE{e93-b_11_3083,
author={Changqing YANG, Wenbo WANG, Shuping CHEN, Mugen PENG, },
journal={IEICE TRANSACTIONS on Communications},
title={Outage Performance of Opportunistic Decode-and-Forward Cooperation with Imperfect Channel State Information},
year={2010},
volume={E93-B},
number={11},
pages={3083-3092},
abstract={In this paper, the outage probability and diversity order of opportunistic decode-and-forward (DF) cooperation are analyzed under Rayleigh fading channels, where the impacts of channel estimation error, relay selection feedback delay and the availability of the direct link between the source and the destination are considered comprehensively. The closed-form expressions of outage probability in the high signal-to-noise ratio (SNR) region are derived as well as the diversity order. The theoretical results demonstrate that the achievable diversity order is zero when channel estimation error exists, and this conclusion holds no matter whether the direct link is available, even if the relay selection feedback is delay-free. For the perfect channel estimation scenario, the achievable diversity order is related to the potential relay number K, the channel delay correlation coefficient ρd and the availability of the direct link. If relay selection feedback is not delayed, i.e., ρd = 1, the diversity order is K when the direct link is blocked, and it becomes K+1 when the direct link is available. For delayed relay selection feedback, i.e., ρd < 1, the diversity order achievable is only related to the availability of the direct link. In this case, if the direct link does not exist, the diversity order is 1, otherwise the diversity order of 2 can be obtained. Simulation results verify the analytical results of outage probability and diversity order.},
keywords={},
doi={10.1587/transcom.E93.B.3083},
ISSN={1745-1345},
month={November},}
Salinan
TY - JOUR
TI - Outage Performance of Opportunistic Decode-and-Forward Cooperation with Imperfect Channel State Information
T2 - IEICE TRANSACTIONS on Communications
SP - 3083
EP - 3092
AU - Changqing YANG
AU - Wenbo WANG
AU - Shuping CHEN
AU - Mugen PENG
PY - 2010
DO - 10.1587/transcom.E93.B.3083
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E93-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 2010
AB - In this paper, the outage probability and diversity order of opportunistic decode-and-forward (DF) cooperation are analyzed under Rayleigh fading channels, where the impacts of channel estimation error, relay selection feedback delay and the availability of the direct link between the source and the destination are considered comprehensively. The closed-form expressions of outage probability in the high signal-to-noise ratio (SNR) region are derived as well as the diversity order. The theoretical results demonstrate that the achievable diversity order is zero when channel estimation error exists, and this conclusion holds no matter whether the direct link is available, even if the relay selection feedback is delay-free. For the perfect channel estimation scenario, the achievable diversity order is related to the potential relay number K, the channel delay correlation coefficient ρd and the availability of the direct link. If relay selection feedback is not delayed, i.e., ρd = 1, the diversity order is K when the direct link is blocked, and it becomes K+1 when the direct link is available. For delayed relay selection feedback, i.e., ρd < 1, the diversity order achievable is only related to the availability of the direct link. In this case, if the direct link does not exist, the diversity order is 1, otherwise the diversity order of 2 can be obtained. Simulation results verify the analytical results of outage probability and diversity order.
ER -