Performance of orthogonal STBC-MIMO with variable-power adaptive modulation and delayed feedback in Nakagami fading channels
A variable-power （VP） adaptive modulation （AM） scheme with space-time block code （STBC） is developed in MIMO systems, and the corresponding performance is investigated in Nakagami fading channels. The optimum switching thresholds are derived so that the spectrum efficiency （SE） under an average powe...
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| Veröffentlicht in: | Science China. Information sciences 2013-10, Vol.56 (10), p.81-90 |
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| creator | Yu, XiangBin Chen, XiaoMin Bi, GuangGuo Rui, Yun |
| description | A variable-power （VP） adaptive modulation （AM） scheme with space-time block code （STBC） is developed in MIMO systems, and the corresponding performance is investigated in Nakagami fading channels. The optimum switching thresholds are derived so that the spectrum efficiency （SE） under an average power and a target bit error rate （BER） constraint is maximized. By the switching thresholds, average BER and SE are further derived. As a result, closed-form expressions are obtained. Besides, the exact and approximate BER expressions of VP AM and constant-power （CP） AM systems with delayed feedback are respectively derived. Simulation results show that the theoretical SE and BER can match the corresponding simulation well. The results indicate that VP-AM with STBC provide higher spectrum efficiency than the CP counterparts, and has slighter bite error rate performance degradation when the normalized delay is less than 0.01. |
| doi_str_mv | 10.1007/s11432-012-4643-2 |
| format | Article |
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The optimum switching thresholds are derived so that the spectrum efficiency （SE） under an average power and a target bit error rate （BER） constraint is maximized. By the switching thresholds, average BER and SE are further derived. As a result, closed-form expressions are obtained. Besides, the exact and approximate BER expressions of VP AM and constant-power （CP） AM systems with delayed feedback are respectively derived. Simulation results show that the theoretical SE and BER can match the corresponding simulation well. The results indicate that VP-AM with STBC provide higher spectrum efficiency than the CP counterparts, and has slighter bite error rate performance degradation when the normalized delay is less than 0.01.</description><identifier>ISSN: 1674-733X</identifier><identifier>EISSN: 1869-1919</identifier><identifier>DOI: 10.1007/s11432-012-4643-2</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Bit error rate ; Channels ; Computer Science ; Fading ; Feedback ; Information Systems and Communication Service ; MIMO communication ; MIMO系统 ; Modulation ; Nakagami衰落信道 ; Performance degradation ; Research Paper ; Switching ; Thresholds ; 可变 ; 平均功率 ; 延迟反馈 ; 性能退化 ; 比特错误率 ; 自适应调制</subject><ispartof>Science China. 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Information sciences</title><addtitle>Sci. China Inf. Sci</addtitle><addtitle>SCIENCE CHINA Information Sciences</addtitle><description>A variable-power （VP） adaptive modulation （AM） scheme with space-time block code （STBC） is developed in MIMO systems, and the corresponding performance is investigated in Nakagami fading channels. The optimum switching thresholds are derived so that the spectrum efficiency （SE） under an average power and a target bit error rate （BER） constraint is maximized. By the switching thresholds, average BER and SE are further derived. As a result, closed-form expressions are obtained. Besides, the exact and approximate BER expressions of VP AM and constant-power （CP） AM systems with delayed feedback are respectively derived. Simulation results show that the theoretical SE and BER can match the corresponding simulation well. The results indicate that VP-AM with STBC provide higher spectrum efficiency than the CP counterparts, and has slighter bite error rate performance degradation when the normalized delay is less than 0.01.</description><subject>Bit error rate</subject><subject>Channels</subject><subject>Computer Science</subject><subject>Fading</subject><subject>Feedback</subject><subject>Information Systems and Communication Service</subject><subject>MIMO communication</subject><subject>MIMO系统</subject><subject>Modulation</subject><subject>Nakagami衰落信道</subject><subject>Performance degradation</subject><subject>Research Paper</subject><subject>Switching</subject><subject>Thresholds</subject><subject>可变</subject><subject>平均功率</subject><subject>延迟反馈</subject><subject>性能退化</subject><subject>比特错误率</subject><subject>自适应调制</subject><issn>1674-733X</issn><issn>1869-1919</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp9kU9v1DAQxSMEElXpB-BmxIWLi8dO4vgIK6CVWlqpReJmzfpP1m1ib-1sq0p8eFxtBRIH5jJz-L0ZzXtN8xbYMTAmPxaAVnDKgNO2bwXlL5oDGHpFQYF6WedetlQK8fN1c1TKDaslBONyOGh-XbrsU54xGkeSJykvmzSmiBO5uv68ouen5xfkISwbco854HpydJseXCZocbuEe0fmZHcTLiFFgtES6yZ8dJZ45-wazS0JkXzHWxxxDsSjDXEkZoMxuqm8aV55nIo7eu6HzY-vX65XJ_Ts4tvp6tMZNUJ2S_2i7QZgkgnLsVeGu3Zg1num0NpBQd-DBWGg65nwwqhOKKsMs2vplbfMisPmw37vNqe7nSuLnkMxbpowurQrGjrWCylhgIq-_we9Sbtc7Siaq-opU8C7SsGeMjmVkp3X2xxmzI8amH6KRO8j0TUS_RSJ5lXD95pS2Ti6_Hfz_0Tvng9tUhzvqu7PpVaKvm0VF78BiteZOg</recordid><startdate>20131001</startdate><enddate>20131001</enddate><creator>Yu, XiangBin</creator><creator>Chen, XiaoMin</creator><creator>Bi, GuangGuo</creator><creator>Rui, Yun</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W92</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>JQ2</scope><scope>K7-</scope><scope>P5Z</scope><scope>P62</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7SC</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope></search><sort><creationdate>20131001</creationdate><title>Performance of orthogonal STBC-MIMO with variable-power adaptive modulation and delayed feedback in Nakagami fading channels</title><author>Yu, XiangBin ; 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Information sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yu, XiangBin</au><au>Chen, XiaoMin</au><au>Bi, GuangGuo</au><au>Rui, Yun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Performance of orthogonal STBC-MIMO with variable-power adaptive modulation and delayed feedback in Nakagami fading channels</atitle><jtitle>Science China. Information sciences</jtitle><stitle>Sci. China Inf. Sci</stitle><addtitle>SCIENCE CHINA Information Sciences</addtitle><date>2013-10-01</date><risdate>2013</risdate><volume>56</volume><issue>10</issue><spage>81</spage><epage>90</epage><pages>81-90</pages><issn>1674-733X</issn><eissn>1869-1919</eissn><abstract>A variable-power （VP） adaptive modulation （AM） scheme with space-time block code （STBC） is developed in MIMO systems, and the corresponding performance is investigated in Nakagami fading channels. The optimum switching thresholds are derived so that the spectrum efficiency （SE） under an average power and a target bit error rate （BER） constraint is maximized. By the switching thresholds, average BER and SE are further derived. As a result, closed-form expressions are obtained. Besides, the exact and approximate BER expressions of VP AM and constant-power （CP） AM systems with delayed feedback are respectively derived. Simulation results show that the theoretical SE and BER can match the corresponding simulation well. The results indicate that VP-AM with STBC provide higher spectrum efficiency than the CP counterparts, and has slighter bite error rate performance degradation when the normalized delay is less than 0.01.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s11432-012-4643-2</doi><tpages>10</tpages></addata></record> |
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| subjects | Bit error rate Channels Computer Science Fading Feedback Information Systems and Communication Service MIMO communication MIMO系统 Modulation Nakagami衰落信道 Performance degradation Research Paper Switching Thresholds 可变 平均功率 延迟反馈 性能退化 比特错误率 自适应调制 |
| title | Performance of orthogonal STBC-MIMO with variable-power adaptive modulation and delayed feedback in Nakagami fading channels |
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