A Geometry-Inclusive Analysis for Single-Relay Systems
Successful message relay, or the quality of the interuser channel, is critical to fully realize the cooperative benefits promised by the theory. This in turn points out the importance of the geometry of cooperative system. This paper investigates the impact of the relay's location on the system...
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| Format: | Article |
| Language: | English |
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Wiley
2009-01-01
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| Series: | International Journal of Digital Multimedia Broadcasting |
| Online Access: | http://dx.doi.org/10.1155/2009/146578 |
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| _version_ | 1832556411099283456 |
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| author | Meng Yu Jing (Tiffany) Li Hamid Sadjadpour |
| author_facet | Meng Yu Jing (Tiffany) Li Hamid Sadjadpour |
| author_sort | Meng Yu |
| collection | DOAJ |
| description | Successful message relay, or the quality of the interuser channel, is critical to fully realize the
cooperative benefits promised by the theory. This in turn points out the importance of the geometry of
cooperative system. This paper investigates the impact of the relay's location on the system capacity and
outage probability for both amplify-forward (AF) and decode-forward (DF) schemes. Signal attenuation
is modeled using power laws, and capacity is evaluated using the max-flow min-cut theory. A capacity
contour for DF, the more popular mode of the two, is provided to facilitate the derivation of engineering
rules. Finally, a selective single-relay system, which selects the best relay node among a host of
candidates according to their locations, is analyzed. The average system capacity and outage, averaged
over all possible candidates' locations, are evaluated. The result shows that the availability of a small
candidate pool of 3 to 5 nodes suffices to reap most of the cooperative gains promised by a selective
single-relay system. |
| format | Article |
| id | doaj-art-cc59ff2946c7447193acc3fe628cd97a |
| institution | Kabale University |
| issn | 1687-7578 1687-7586 |
| language | English |
| publishDate | 2009-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Digital Multimedia Broadcasting |
| spelling | doaj-art-cc59ff2946c7447193acc3fe628cd97a2025-02-03T05:45:35ZengWileyInternational Journal of Digital Multimedia Broadcasting1687-75781687-75862009-01-01200910.1155/2009/146578146578A Geometry-Inclusive Analysis for Single-Relay SystemsMeng Yu0Jing (Tiffany) Li1Hamid Sadjadpour2Department of Electrical and Computer Engineering, Lehigh University, Bethlehem, PA 18015, USADepartment of Electrical and Computer Engineering, Lehigh University, Bethlehem, PA 18015, USABaskin School of Engineering, University of California, Santa Cruz, CA 95064, USASuccessful message relay, or the quality of the interuser channel, is critical to fully realize the cooperative benefits promised by the theory. This in turn points out the importance of the geometry of cooperative system. This paper investigates the impact of the relay's location on the system capacity and outage probability for both amplify-forward (AF) and decode-forward (DF) schemes. Signal attenuation is modeled using power laws, and capacity is evaluated using the max-flow min-cut theory. A capacity contour for DF, the more popular mode of the two, is provided to facilitate the derivation of engineering rules. Finally, a selective single-relay system, which selects the best relay node among a host of candidates according to their locations, is analyzed. The average system capacity and outage, averaged over all possible candidates' locations, are evaluated. The result shows that the availability of a small candidate pool of 3 to 5 nodes suffices to reap most of the cooperative gains promised by a selective single-relay system.http://dx.doi.org/10.1155/2009/146578 |
| spellingShingle | Meng Yu Jing (Tiffany) Li Hamid Sadjadpour A Geometry-Inclusive Analysis for Single-Relay Systems International Journal of Digital Multimedia Broadcasting |
| title | A Geometry-Inclusive Analysis for Single-Relay Systems |
| title_full | A Geometry-Inclusive Analysis for Single-Relay Systems |
| title_fullStr | A Geometry-Inclusive Analysis for Single-Relay Systems |
| title_full_unstemmed | A Geometry-Inclusive Analysis for Single-Relay Systems |
| title_short | A Geometry-Inclusive Analysis for Single-Relay Systems |
| title_sort | geometry inclusive analysis for single relay systems |
| url | http://dx.doi.org/10.1155/2009/146578 |
| work_keys_str_mv | AT mengyu ageometryinclusiveanalysisforsinglerelaysystems AT jingtiffanyli ageometryinclusiveanalysisforsinglerelaysystems AT hamidsadjadpour ageometryinclusiveanalysisforsinglerelaysystems AT mengyu geometryinclusiveanalysisforsinglerelaysystems AT jingtiffanyli geometryinclusiveanalysisforsinglerelaysystems AT hamidsadjadpour geometryinclusiveanalysisforsinglerelaysystems |