Outage Performance of Two-Hop OFDM Systems With Spatially Random Decode-and-Forward Relays
In this paper, we analyze the outage performance of different multicarrier relay selection schemes for two-hop orthogonal frequency-division multiplexing (OFDM) systems in a Poisson field of relays. In particular, special emphasis is placed on decode-and-forward relay systems, equipped with bulk and...
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| Format: | Article |
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IEEE
2017-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8110602/ |
| _version_ | 1818924430995226624 |
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| author | Shuping Dang Justin P. Coon Gaojie Chen |
| author_facet | Shuping Dang Justin P. Coon Gaojie Chen |
| author_sort | Shuping Dang |
| collection | DOAJ |
| description | In this paper, we analyze the outage performance of different multicarrier relay selection schemes for two-hop orthogonal frequency-division multiplexing (OFDM) systems in a Poisson field of relays. In particular, special emphasis is placed on decode-and-forward relay systems, equipped with bulk and per-subcarrier selection schemes, respectively. The exact expressions for outage probability are derived in integrals for general cases. In addition, asymptotic expressions for outage probability in the high signal-to-noise ratio region in the finite circle relay distribution region are determined in closed forms for both relay selection schemes. In addition, the outage probabilities for free space in the infinite relay distribution region are derived in closed forms. Meanwhile, a series of important properties related to cooperative systems in random networks are investigated, including diversity, outage probability ratio of two selection schemes, and optimization of the number of subcarriers in terms of system throughput. All analyses are numerically verified by simulations. Finally, a framework for analyzing the outage performance of the OFDM systems with spatially random relays is constructed, which can be easily modified to analyze other similar cases with different forwarding protocols, location distributions, and/or channel conditions. |
| first_indexed | 2024-12-20T02:25:13Z |
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| id | doaj.art-f70e61bb9f3c460e844b57a80f838911 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-20T02:25:13Z |
| publishDate | 2017-01-01 |
| publisher | IEEE |
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| series | IEEE Access |
| spelling | doaj.art-f70e61bb9f3c460e844b57a80f8389112022-12-21T19:56:43ZengIEEEIEEE Access2169-35362017-01-015275142752410.1109/ACCESS.2017.27736588110602Outage Performance of Two-Hop OFDM Systems With Spatially Random Decode-and-Forward RelaysShuping Dang0Justin P. Coon1Gaojie Chen2https://orcid.org/0000-0003-2978-0365Department of Engineering Science, University of Oxford, Oxford, U.K.Department of Engineering Science, University of Oxford, Oxford, U.K.Department of Engineering Science, University of Oxford, Oxford, U.K.In this paper, we analyze the outage performance of different multicarrier relay selection schemes for two-hop orthogonal frequency-division multiplexing (OFDM) systems in a Poisson field of relays. In particular, special emphasis is placed on decode-and-forward relay systems, equipped with bulk and per-subcarrier selection schemes, respectively. The exact expressions for outage probability are derived in integrals for general cases. In addition, asymptotic expressions for outage probability in the high signal-to-noise ratio region in the finite circle relay distribution region are determined in closed forms for both relay selection schemes. In addition, the outage probabilities for free space in the infinite relay distribution region are derived in closed forms. Meanwhile, a series of important properties related to cooperative systems in random networks are investigated, including diversity, outage probability ratio of two selection schemes, and optimization of the number of subcarriers in terms of system throughput. All analyses are numerically verified by simulations. Finally, a framework for analyzing the outage performance of the OFDM systems with spatially random relays is constructed, which can be easily modified to analyze other similar cases with different forwarding protocols, location distributions, and/or channel conditions.https://ieeexplore.ieee.org/document/8110602/Spatially random relayPoisson point processmulticarrier relay selectionOFDMoutage performance |
| spellingShingle | Shuping Dang Justin P. Coon Gaojie Chen Outage Performance of Two-Hop OFDM Systems With Spatially Random Decode-and-Forward Relays IEEE Access Spatially random relay Poisson point process multicarrier relay selection OFDM outage performance |
| title | Outage Performance of Two-Hop OFDM Systems With Spatially Random Decode-and-Forward Relays |
| title_full | Outage Performance of Two-Hop OFDM Systems With Spatially Random Decode-and-Forward Relays |
| title_fullStr | Outage Performance of Two-Hop OFDM Systems With Spatially Random Decode-and-Forward Relays |
| title_full_unstemmed | Outage Performance of Two-Hop OFDM Systems With Spatially Random Decode-and-Forward Relays |
| title_short | Outage Performance of Two-Hop OFDM Systems With Spatially Random Decode-and-Forward Relays |
| title_sort | outage performance of two hop ofdm systems with spatially random decode and forward relays |
| topic | Spatially random relay Poisson point process multicarrier relay selection OFDM outage performance |
| url | https://ieeexplore.ieee.org/document/8110602/ |
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