Optimal relay allocation strategy based on maximum rate in two-user multi-relay system
Cooperative communication can enhance the performance of wireless networks via relays, and so how to allocate the relay to obtain the optimal performance of system is a key issue. In this article, we consider a cooperative system where two users communicate with the destination via relays, and these...
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| Veröffentlicht in: | Journal of modern transportation 2013-03, Vol.21 (1), p.66-71 |
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| creator | Liu, Ji Lei, Xia Cao, Haibo Jin, Maozhu |
| description | Cooperative communication can enhance the performance of wireless networks via relays, and so how to allocate the relay to obtain the optimal performance of system is a key issue. In this article, we consider a cooperative system where two users communicate with the destination via relays, and these relays connect with the destination by cable. Through the theoretical derivation and analysis, we obtain the optimal relay allocation strat- egy based on the maximum rate under the condition of relays setting forwarding thresholds. The result shows that the system has the maximum transmission rate when the relays are allocated equivalently between users. Moreover, compared with the single-user system, the results prove that diversity gain has a decisive effect on the performance in low SNR. However, with the SNR increasing, the impact of diversity gain on system rate will be reduced. In high SNR, spatial freedom degree of the channel of multiple users is brought to enhance the performance instead of diversity gain. Numerical results demonstrate the validity of the allocation strategy and conclusion arrived in this study, but we do not find the similar arguments in the literature so far, for comparison with the conclusion of this study. |
| doi_str_mv | 10.1007/s40534-013-0004-0 |
| format | Article |
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In this article, we consider a cooperative system where two users communicate with the destination via relays, and these relays connect with the destination by cable. Through the theoretical derivation and analysis, we obtain the optimal relay allocation strat- egy based on the maximum rate under the condition of relays setting forwarding thresholds. The result shows that the system has the maximum transmission rate when the relays are allocated equivalently between users. Moreover, compared with the single-user system, the results prove that diversity gain has a decisive effect on the performance in low SNR. However, with the SNR increasing, the impact of diversity gain on system rate will be reduced. In high SNR, spatial freedom degree of the channel of multiple users is brought to enhance the performance instead of diversity gain. 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All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c406t-fe16341ec1028a4c0d7df9ab1c81d94b1e70847df214d21693851b316f031063</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/85396A/85396A.jpg</thumbnail><link.rule.ids>314,776,780,860,27901,27902</link.rule.ids></links><search><creatorcontrib>Liu, Ji</creatorcontrib><creatorcontrib>Lei, Xia</creatorcontrib><creatorcontrib>Cao, Haibo</creatorcontrib><creatorcontrib>Jin, Maozhu</creatorcontrib><title>Optimal relay allocation strategy based on maximum rate in two-user multi-relay system</title><title>Journal of modern transportation</title><addtitle>J. Mod. Transport</addtitle><addtitle>Journal of Modern Transportation</addtitle><description>Cooperative communication can enhance the performance of wireless networks via relays, and so how to allocate the relay to obtain the optimal performance of system is a key issue. In this article, we consider a cooperative system where two users communicate with the destination via relays, and these relays connect with the destination by cable. Through the theoretical derivation and analysis, we obtain the optimal relay allocation strat- egy based on the maximum rate under the condition of relays setting forwarding thresholds. The result shows that the system has the maximum transmission rate when the relays are allocated equivalently between users. Moreover, compared with the single-user system, the results prove that diversity gain has a decisive effect on the performance in low SNR. However, with the SNR increasing, the impact of diversity gain on system rate will be reduced. In high SNR, spatial freedom degree of the channel of multiple users is brought to enhance the performance instead of diversity gain. Numerical results demonstrate the validity of the allocation strategy and conclusion arrived in this study, but we do not find the similar arguments in the literature so far, for comparison with the conclusion of this study.</description><subject>Allocations</subject><subject>Automotive Engineering</subject><subject>Derivation</subject><subject>Engineering</subject><subject>Foundations</subject><subject>Gain</subject><subject>Geoengineering</subject><subject>Hydraulics</subject><subject>Optimization</subject><subject>Performance enhancement</subject><subject>Regional/Spatial Science</subject><subject>Relay</subject><subject>Strategy</subject><subject>Transportation</subject><subject>中继系统</subject><subject>低信噪比</subject><subject>分配策略</subject><subject>分集增益</subject><subject>单用户系统</subject><subject>基础</subject><subject>最大速率</subject><subject>继电器</subject><issn>2095-087X</issn><issn>2662-4745</issn><issn>2196-0577</issn><issn>2662-4753</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>BENPR</sourceid><recordid>eNp9kU9r3DAQxU1JoSHNB8hNJZdAUDsjybJ0DCF_CoFcQslNyLa89WLLG0kmu9--Mg4h5NCThsfvvSdmiuIM4ScCVL-igJILCsgpAOThS3HMUEsKZVUd5Rl0SUFVz9-K0xi3mUEpJSvVcfHncZf60Q4kuMEeiB2GqbGpnzyJKdjkNgdS2-hakpXR7vtxHsmik96T9DrRObpAxnlIPV0T4iEmN34vvnZ2iO707T0pnm5vnq7v6cPj3e_rqwfaCJCJdg4lF-gaBKasaKCt2k7bGhuFrRY1ugqUyBpD0TKUmqsSa46yA44g-Ulxuca-Wt9ZvzHbaQ4-F5q936Z2v6-NY3ktkNekM32x0rswvcwuJjP2sXHDYL2b5miwUhKlQr2g55_Q92SUJdOVUCVkCleqCVOMwXVmF_Iyw8EgmOUyZr2MyV8wy2XM4mGrJ2bWb1z4kPwf04-3or-T37xk33uTKAXTXHP-DwpHmoQ</recordid><startdate>20130301</startdate><enddate>20130301</enddate><creator>Liu, Ji</creator><creator>Lei, Xia</creator><creator>Cao, Haibo</creator><creator>Jin, Maozhu</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><general>National Key Laboratory of Communications, University of Electronic Science and Technology of China, Chengdu 610054, China%Business School of Sichuan University, Chengdu 610065, China</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W92</scope><scope>~WA</scope><scope>C6C</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PHGZM</scope><scope>PHGZT</scope><scope>PIMPY</scope><scope>PKEHL</scope><scope>PQEST</scope><scope>PQGLB</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope></search><sort><creationdate>20130301</creationdate><title>Optimal relay allocation strategy based on maximum rate in two-user multi-relay system</title><author>Liu, Ji ; 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Mod. Transport</stitle><addtitle>Journal of Modern Transportation</addtitle><date>2013-03-01</date><risdate>2013</risdate><volume>21</volume><issue>1</issue><spage>66</spage><epage>71</epage><pages>66-71</pages><issn>2095-087X</issn><issn>2662-4745</issn><eissn>2196-0577</eissn><eissn>2662-4753</eissn><abstract>Cooperative communication can enhance the performance of wireless networks via relays, and so how to allocate the relay to obtain the optimal performance of system is a key issue. In this article, we consider a cooperative system where two users communicate with the destination via relays, and these relays connect with the destination by cable. Through the theoretical derivation and analysis, we obtain the optimal relay allocation strat- egy based on the maximum rate under the condition of relays setting forwarding thresholds. The result shows that the system has the maximum transmission rate when the relays are allocated equivalently between users. Moreover, compared with the single-user system, the results prove that diversity gain has a decisive effect on the performance in low SNR. However, with the SNR increasing, the impact of diversity gain on system rate will be reduced. In high SNR, spatial freedom degree of the channel of multiple users is brought to enhance the performance instead of diversity gain. Numerical results demonstrate the validity of the allocation strategy and conclusion arrived in this study, but we do not find the similar arguments in the literature so far, for comparison with the conclusion of this study.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s40534-013-0004-0</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Allocations Automotive Engineering Derivation Engineering Foundations Gain Geoengineering Hydraulics Optimization Performance enhancement Regional/Spatial Science Relay Strategy Transportation 中继系统 低信噪比 分配策略 分集增益 单用户系统 基础 最大速率 继电器 |
| title | Optimal relay allocation strategy based on maximum rate in two-user multi-relay system |
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