Sum-rate maximization in MIMO NOMA system with imperfect CSI
In order to solve the problem of maximizing the sum rate under the constraints of transmission power limitation and users’ rates requirements,precoder and receiver were devised by combining multiple-input multiple-output (MIMO) and non-orthogonal multiple access (NOMA) based on imperfect channel sta...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2019-11-01
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| Series: | Tongxin xuebao |
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| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2019221/ |
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| _version_ | 1841539328371589120 |
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| author | Yanjing SUN Yang LIU Jiasi ZHOU Qi CAO Song LI |
| author_facet | Yanjing SUN Yang LIU Jiasi ZHOU Qi CAO Song LI |
| author_sort | Yanjing SUN |
| collection | DOAJ |
| description | In order to solve the problem of maximizing the sum rate under the constraints of transmission power limitation and users’ rates requirements,precoder and receiver were devised by combining multiple-input multiple-output (MIMO) and non-orthogonal multiple access (NOMA) based on imperfect channel state information (CSI).To take advantage of successive interference cancellation (SIC) techniques to eliminate interference from weak user’s signal,each data stream of the strong user needed to decode the corresponding weak user’s signal.Since the problem formed was non-convex,it was converted into the problem with the difference of two convex functions (D.C.) by using semi-positive definite programming and first-order Taylor expansion,and a penalty function was used to solve the constraint of the rank of the precoding covariance matrix.The simulation results show that compared with the orthogonal multiple access technology,the proposed D.C.algorithm can improve system sum rate. |
| format | Article |
| id | doaj-art-1b89acfb85564eef83a207bb5d15c1ce |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2019-11-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-1b89acfb85564eef83a207bb5d15c1ce2025-01-14T07:18:14ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2019-11-01409410059732026Sum-rate maximization in MIMO NOMA system with imperfect CSIYanjing SUNYang LIUJiasi ZHOUQi CAOSong LIIn order to solve the problem of maximizing the sum rate under the constraints of transmission power limitation and users’ rates requirements,precoder and receiver were devised by combining multiple-input multiple-output (MIMO) and non-orthogonal multiple access (NOMA) based on imperfect channel state information (CSI).To take advantage of successive interference cancellation (SIC) techniques to eliminate interference from weak user’s signal,each data stream of the strong user needed to decode the corresponding weak user’s signal.Since the problem formed was non-convex,it was converted into the problem with the difference of two convex functions (D.C.) by using semi-positive definite programming and first-order Taylor expansion,and a penalty function was used to solve the constraint of the rank of the precoding covariance matrix.The simulation results show that compared with the orthogonal multiple access technology,the proposed D.C.algorithm can improve system sum rate.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2019221/multiple-input multiple-outputnon-orthogonal multiple accessprecoding designD.C.programming |
| spellingShingle | Yanjing SUN Yang LIU Jiasi ZHOU Qi CAO Song LI Sum-rate maximization in MIMO NOMA system with imperfect CSI Tongxin xuebao multiple-input multiple-output non-orthogonal multiple access precoding design D.C.programming |
| title | Sum-rate maximization in MIMO NOMA system with imperfect CSI |
| title_full | Sum-rate maximization in MIMO NOMA system with imperfect CSI |
| title_fullStr | Sum-rate maximization in MIMO NOMA system with imperfect CSI |
| title_full_unstemmed | Sum-rate maximization in MIMO NOMA system with imperfect CSI |
| title_short | Sum-rate maximization in MIMO NOMA system with imperfect CSI |
| title_sort | sum rate maximization in mimo noma system with imperfect csi |
| topic | multiple-input multiple-output non-orthogonal multiple access precoding design D.C.programming |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2019221/ |
| work_keys_str_mv | AT yanjingsun sumratemaximizationinmimonomasystemwithimperfectcsi AT yangliu sumratemaximizationinmimonomasystemwithimperfectcsi AT jiasizhou sumratemaximizationinmimonomasystemwithimperfectcsi AT qicao sumratemaximizationinmimonomasystemwithimperfectcsi AT songli sumratemaximizationinmimonomasystemwithimperfectcsi |