Power allocation under per-antenna power constraints in multiuser MIMO systems
A low-complexity power allocation algorithm was investigated under per-antenna power constraints(PAPC)in multiuser multiple-input multiple-output (MIMO) systems.It was shown that the optimal power allocation subject to PAPC,aimed at maximizing the sum rate of multiple users with zero forcing (ZF) pr...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2012-10-01
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| Series: | Tongxin xuebao |
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| Online Access: | http://www.joconline.com.cn/zh/article/doi/1000-436X(2012)10-0071-06/ |
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| _version_ | 1841539877837996032 |
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| author | Sheng-qian HAN Chen-yang YANG |
| author_facet | Sheng-qian HAN Chen-yang YANG |
| author_sort | Sheng-qian HAN |
| collection | DOAJ |
| description | A low-complexity power allocation algorithm was investigated under per-antenna power constraints(PAPC)in multiuser multiple-input multiple-output (MIMO) systems.It was shown that the optimal power allocation subject to PAPC,aimed at maximizing the sum rate of multiple users with zero forcing (ZF) precoders,had the structure of water-filling with multiple water-levels.Based on this result,the equivalence between PAPC and weighted sum power constraints was proved and a low-complexity suboptimal power allocation method was then proposed.Simulation results show that the proposed method outperforms the existing equal power allocation method and the heuristic method,and it can efficiently reduce the computational complexity with a negligible performance loss compared with the optimal power allocation method. |
| format | Article |
| id | doaj-art-be12c096b8bc4515bd1da376f779125b |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2012-10-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-be12c096b8bc4515bd1da376f779125b2025-01-14T06:33:03ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2012-10-0133717659665448Power allocation under per-antenna power constraints in multiuser MIMO systemsSheng-qian HANChen-yang YANGA low-complexity power allocation algorithm was investigated under per-antenna power constraints(PAPC)in multiuser multiple-input multiple-output (MIMO) systems.It was shown that the optimal power allocation subject to PAPC,aimed at maximizing the sum rate of multiple users with zero forcing (ZF) precoders,had the structure of water-filling with multiple water-levels.Based on this result,the equivalence between PAPC and weighted sum power constraints was proved and a low-complexity suboptimal power allocation method was then proposed.Simulation results show that the proposed method outperforms the existing equal power allocation method and the heuristic method,and it can efficiently reduce the computational complexity with a negligible performance loss compared with the optimal power allocation method.http://www.joconline.com.cn/zh/article/doi/1000-436X(2012)10-0071-06/multiuser MIMO systemsper-antenna power constraintspower allocationzero forcing precoder |
| spellingShingle | Sheng-qian HAN Chen-yang YANG Power allocation under per-antenna power constraints in multiuser MIMO systems Tongxin xuebao multiuser MIMO systems per-antenna power constraints power allocation zero forcing precoder |
| title | Power allocation under per-antenna power constraints in multiuser MIMO systems |
| title_full | Power allocation under per-antenna power constraints in multiuser MIMO systems |
| title_fullStr | Power allocation under per-antenna power constraints in multiuser MIMO systems |
| title_full_unstemmed | Power allocation under per-antenna power constraints in multiuser MIMO systems |
| title_short | Power allocation under per-antenna power constraints in multiuser MIMO systems |
| title_sort | power allocation under per antenna power constraints in multiuser mimo systems |
| topic | multiuser MIMO systems per-antenna power constraints power allocation zero forcing precoder |
| url | http://www.joconline.com.cn/zh/article/doi/1000-436X(2012)10-0071-06/ |
| work_keys_str_mv | AT shengqianhan powerallocationunderperantennapowerconstraintsinmultiusermimosystems AT chenyangyang powerallocationunderperantennapowerconstraintsinmultiusermimosystems |