Energy-Efficient Path Selection Using SNR Correlation for Wireless Multi-Hop Cooperative Communications
In this paper, we consider partial path selection (PPS) for a multi-hop decode-and-forward cooperative system with limited channel state information (CSI) feedback, where the PPS utilizes local CSI only for a subset of hops on each of all independent paths between a source and a destination to reduc...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/11/11/3004 |
| _version_ | 1811187776010321920 |
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| author | In-Ho Lee Haejoon Jung |
| author_facet | In-Ho Lee Haejoon Jung |
| author_sort | In-Ho Lee |
| collection | DOAJ |
| description | In this paper, we consider partial path selection (PPS) for a multi-hop decode-and-forward cooperative system with limited channel state information (CSI) feedback, where the PPS utilizes local CSI only for a subset of hops on each of all independent paths between a source and a destination to reduce the energy consumption for CSI feedback. To enhance the end-to-end performance of the PPS, we propose a novel PPS method with local CSI chosen by the correlation between the end-to-end signal-to-noise ratios (SNRs) based on global and local CSI under Nakagami-<i>m</i> fading channels. For each path, we pick a subset of hops to report CSI with the highest correlation for a given CSI feedback overhead requirement, which can achieve the similar end-to-end outage probability to the best path selection with global CSI. We provide an exact and closed-form expression for the SNR correlation coefficient and present an impact of the SNR correlation on the end-to-end outage probability. |
| first_indexed | 2024-04-11T14:09:22Z |
| format | Article |
| id | doaj.art-812b4068e10040eeb0861c09536e64c1 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T14:09:22Z |
| publishDate | 2018-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-812b4068e10040eeb0861c09536e64c12022-12-22T04:19:47ZengMDPI AGEnergies1996-10732018-11-011111300410.3390/en11113004en11113004Energy-Efficient Path Selection Using SNR Correlation for Wireless Multi-Hop Cooperative CommunicationsIn-Ho Lee0Haejoon Jung1Department of Electrical, Electronic and Control Engineering, Hankyong National University, Anseong 17579, KoreaDepartment of Information and Telecommunication Engineering, Incheon National University, Incheon 22012, KoreaIn this paper, we consider partial path selection (PPS) for a multi-hop decode-and-forward cooperative system with limited channel state information (CSI) feedback, where the PPS utilizes local CSI only for a subset of hops on each of all independent paths between a source and a destination to reduce the energy consumption for CSI feedback. To enhance the end-to-end performance of the PPS, we propose a novel PPS method with local CSI chosen by the correlation between the end-to-end signal-to-noise ratios (SNRs) based on global and local CSI under Nakagami-<i>m</i> fading channels. For each path, we pick a subset of hops to report CSI with the highest correlation for a given CSI feedback overhead requirement, which can achieve the similar end-to-end outage probability to the best path selection with global CSI. We provide an exact and closed-form expression for the SNR correlation coefficient and present an impact of the SNR correlation on the end-to-end outage probability.https://www.mdpi.com/1996-1073/11/11/3004multi-hop decode-and-forward relayinglimited channel feedbackSNR correlationrelay selectionNakagami fading channels |
| spellingShingle | In-Ho Lee Haejoon Jung Energy-Efficient Path Selection Using SNR Correlation for Wireless Multi-Hop Cooperative Communications Energies multi-hop decode-and-forward relaying limited channel feedback SNR correlation relay selection Nakagami fading channels |
| title | Energy-Efficient Path Selection Using SNR Correlation for Wireless Multi-Hop Cooperative Communications |
| title_full | Energy-Efficient Path Selection Using SNR Correlation for Wireless Multi-Hop Cooperative Communications |
| title_fullStr | Energy-Efficient Path Selection Using SNR Correlation for Wireless Multi-Hop Cooperative Communications |
| title_full_unstemmed | Energy-Efficient Path Selection Using SNR Correlation for Wireless Multi-Hop Cooperative Communications |
| title_short | Energy-Efficient Path Selection Using SNR Correlation for Wireless Multi-Hop Cooperative Communications |
| title_sort | energy efficient path selection using snr correlation for wireless multi hop cooperative communications |
| topic | multi-hop decode-and-forward relaying limited channel feedback SNR correlation relay selection Nakagami fading channels |
| url | https://www.mdpi.com/1996-1073/11/11/3004 |
| work_keys_str_mv | AT inholee energyefficientpathselectionusingsnrcorrelationforwirelessmultihopcooperativecommunications AT haejoonjung energyefficientpathselectionusingsnrcorrelationforwirelessmultihopcooperativecommunications |