Joint estimation of interference frequency offset and time delay in PCMA system
For cooperative received high-order modulation PCMA (paired carrier multiple access) signals,joint estima-tion of frequency offset and time delay was proposed.The sequence samples stored locally were used as auxiliary data.Estimation of frequency offset and time delay was calculated by optimizing th...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2017-02-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2017040/ |
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| _version_ | 1841539511356489728 |
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| author | Xue-juan WEI Yong YANG Yi-ming GUO Dong-ling ZHANG |
| author_facet | Xue-juan WEI Yong YANG Yi-ming GUO Dong-ling ZHANG |
| author_sort | Xue-juan WEI |
| collection | DOAJ |
| description | For cooperative received high-order modulation PCMA (paired carrier multiple access) signals,joint estima-tion of frequency offset and time delay was proposed.The sequence samples stored locally were used as auxiliary data.Estimation of frequency offset and time delay was calculated by optimizing the objective function,which was obtained from the cross-correlation computation of the auxiliary data and mixed signal,and the optimized process was accom-plished by utilizing two-dimensional search.By setting the threshold of joint estimation,the calculated amount was greatly reduced.Modified Cramer-Rao bound (MCRB) of interference frequency offset and time delay was derived,which provided theoretical basis for performance of the proposed algorithm.Simulation results show that the algorithm has similar performance with existing algorithms,but its complexity is reduced by two-thirds. |
| format | Article |
| id | doaj-art-6d82ceb08b834e259758427cce263d42 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2017-02-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-6d82ceb08b834e259758427cce263d422025-01-14T07:11:45ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2017-02-013817318259707560Joint estimation of interference frequency offset and time delay in PCMA systemXue-juan WEIYong YANGYi-ming GUODong-ling ZHANGFor cooperative received high-order modulation PCMA (paired carrier multiple access) signals,joint estima-tion of frequency offset and time delay was proposed.The sequence samples stored locally were used as auxiliary data.Estimation of frequency offset and time delay was calculated by optimizing the objective function,which was obtained from the cross-correlation computation of the auxiliary data and mixed signal,and the optimized process was accom-plished by utilizing two-dimensional search.By setting the threshold of joint estimation,the calculated amount was greatly reduced.Modified Cramer-Rao bound (MCRB) of interference frequency offset and time delay was derived,which provided theoretical basis for performance of the proposed algorithm.Simulation results show that the algorithm has similar performance with existing algorithms,but its complexity is reduced by two-thirds.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2017040/PCMA,high-order modulationfrequency offset estimationjoint estimationMCRB |
| spellingShingle | Xue-juan WEI Yong YANG Yi-ming GUO Dong-ling ZHANG Joint estimation of interference frequency offset and time delay in PCMA system Tongxin xuebao PCMA,high-order modulation frequency offset estimation joint estimation MCRB |
| title | Joint estimation of interference frequency offset and time delay in PCMA system |
| title_full | Joint estimation of interference frequency offset and time delay in PCMA system |
| title_fullStr | Joint estimation of interference frequency offset and time delay in PCMA system |
| title_full_unstemmed | Joint estimation of interference frequency offset and time delay in PCMA system |
| title_short | Joint estimation of interference frequency offset and time delay in PCMA system |
| title_sort | joint estimation of interference frequency offset and time delay in pcma system |
| topic | PCMA,high-order modulation frequency offset estimation joint estimation MCRB |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2017040/ |
| work_keys_str_mv | AT xuejuanwei jointestimationofinterferencefrequencyoffsetandtimedelayinpcmasystem AT yongyang jointestimationofinterferencefrequencyoffsetandtimedelayinpcmasystem AT yimingguo jointestimationofinterferencefrequencyoffsetandtimedelayinpcmasystem AT donglingzhang jointestimationofinterferencefrequencyoffsetandtimedelayinpcmasystem |