Study on adaptive modulation in D2D communications over Nakagami-m fading channel
A novel adaptive modulation based on nondata-aided error vector magnitude (NDA-EVM) was proposed to solve the problem of lower spectral efficiency in device to device (D2D) communication over Nakagami-m fading channel.The NDA-EVM was used to evaluate the channel quality.The relationship between NDA-...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2018-09-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2018151/ |
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| author | Xiaoping ZENG Haiwei MAO Fan YANG Xin JIAN Shiqi LI Xin JIANG Wei FANG |
| author_facet | Xiaoping ZENG Haiwei MAO Fan YANG Xin JIAN Shiqi LI Xin JIANG Wei FANG |
| author_sort | Xiaoping ZENG |
| collection | DOAJ |
| description | A novel adaptive modulation based on nondata-aided error vector magnitude (NDA-EVM) was proposed to solve the problem of lower spectral efficiency in device to device (D2D) communication over Nakagami-m fading channel.The NDA-EVM was used to evaluate the channel quality.The relationship between NDA-EVM and symbol error ratio (SER) was derived according to the maximum likelihood method.Thereafter,the adaptive modulation mechanism of MQAM with the SER constraint was designed.Considering the joint effect of finite-length queuing and fading channel,the system packet loss rate and spectral efficiency was analyzed.Theoretical analysis and simulation experiments show that NDA-EVM based adaptive modulation accurately gives the modulation threshold and evaluates the relationship between QoS and packet loss rate,the proposed algorithm improves system spectral efficiency while maintaining low algorithm complexity,spectral efficiency improves by 0.752 bit·(s·Hz)<sup>-1</sup>,compared with traditional algorithm. |
| format | Article |
| id | doaj-art-e9ba621b89b1499e8d6d305286db61a9 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2018-09-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-e9ba621b89b1499e8d6d305286db61a92025-01-14T07:15:25ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2018-09-0139314259720412Study on adaptive modulation in D2D communications over Nakagami-m fading channelXiaoping ZENGHaiwei MAOFan YANGXin JIANShiqi LIXin JIANGWei FANGA novel adaptive modulation based on nondata-aided error vector magnitude (NDA-EVM) was proposed to solve the problem of lower spectral efficiency in device to device (D2D) communication over Nakagami-m fading channel.The NDA-EVM was used to evaluate the channel quality.The relationship between NDA-EVM and symbol error ratio (SER) was derived according to the maximum likelihood method.Thereafter,the adaptive modulation mechanism of MQAM with the SER constraint was designed.Considering the joint effect of finite-length queuing and fading channel,the system packet loss rate and spectral efficiency was analyzed.Theoretical analysis and simulation experiments show that NDA-EVM based adaptive modulation accurately gives the modulation threshold and evaluates the relationship between QoS and packet loss rate,the proposed algorithm improves system spectral efficiency while maintaining low algorithm complexity,spectral efficiency improves by 0.752 bit·(s·Hz)<sup>-1</sup>,compared with traditional algorithm.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2018151/Nakagami-m fading channelD2Dadaptive modulationerror vector magnitude |
| spellingShingle | Xiaoping ZENG Haiwei MAO Fan YANG Xin JIAN Shiqi LI Xin JIANG Wei FANG Study on adaptive modulation in D2D communications over Nakagami-m fading channel Tongxin xuebao Nakagami-m fading channel D2D adaptive modulation error vector magnitude |
| title | Study on adaptive modulation in D2D communications over Nakagami-m fading channel |
| title_full | Study on adaptive modulation in D2D communications over Nakagami-m fading channel |
| title_fullStr | Study on adaptive modulation in D2D communications over Nakagami-m fading channel |
| title_full_unstemmed | Study on adaptive modulation in D2D communications over Nakagami-m fading channel |
| title_short | Study on adaptive modulation in D2D communications over Nakagami-m fading channel |
| title_sort | study on adaptive modulation in d2d communications over nakagami m fading channel |
| topic | Nakagami-m fading channel D2D adaptive modulation error vector magnitude |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2018151/ |
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