Improved method of compensating non-reciprocal interference in adaptive TDD MIMO-OFDM systems
In a time division duplex（TDD） system,the channel state information could be easily obtained at the trans-mitter side without feedback due to channel reciprocity and it could be used to increase dramatically the spectral effi-ciency of a multi-input multi-output（MIMO） system.However,the interference...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2009-01-01
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| Series: | Tongxin xuebao |
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| Online Access: | http://www.joconline.com.cn/zh/article/74652698/ |
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| author | ZENG Duan-yang1 SONG Rong-fang1 |
| author_facet | ZENG Duan-yang1 SONG Rong-fang1 |
| author_sort | ZENG Duan-yang1 |
| collection | DOAJ |
| description | In a time division duplex（TDD） system,the channel state information could be easily obtained at the trans-mitter side without feedback due to channel reciprocity and it could be used to increase dramatically the spectral effi-ciency of a multi-input multi-output（MIMO） system.However,the interference structure between transmission directions did not necessarily correlate at all.In such a case,the downlink modulation/coding parameters based on the uplink meas-urements might lead to excessively high frame error rates（FER）.Therefore,a simple closed-loop feedback method of in-terference adaptation was proposed,which made the transmit-side estimated interference be able to track the instantane-ous receive-side interference dynamically,and its performance in adaptive TDD MIMO-OFDM systems with HARQ was studied.Simulation results show that the tracking performance is well and the target FER requirement can be guaranteed. |
| format | Article |
| id | doaj-art-c180c37ee863441eb636a324e1dabd9d |
| institution | OA Journals |
| issn | 1000-436X |
| language | zho |
| publishDate | 2009-01-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-c180c37ee863441eb636a324e1dabd9d2025-08-20T02:34:06ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2009-01-013010611274652698Improved method of compensating non-reciprocal interference in adaptive TDD MIMO-OFDM systemsZENG Duan-yang1SONG Rong-fang1In a time division duplex（TDD） system,the channel state information could be easily obtained at the trans-mitter side without feedback due to channel reciprocity and it could be used to increase dramatically the spectral effi-ciency of a multi-input multi-output（MIMO） system.However,the interference structure between transmission directions did not necessarily correlate at all.In such a case,the downlink modulation/coding parameters based on the uplink meas-urements might lead to excessively high frame error rates（FER）.Therefore,a simple closed-loop feedback method of in-terference adaptation was proposed,which made the transmit-side estimated interference be able to track the instantane-ous receive-side interference dynamically,and its performance in adaptive TDD MIMO-OFDM systems with HARQ was studied.Simulation results show that the tracking performance is well and the target FER requirement can be guaranteed.http://www.joconline.com.cn/zh/article/74652698/TDDMIMOOFDMAMCHARQclosed-loop feedback |
| spellingShingle | ZENG Duan-yang1 SONG Rong-fang1 Improved method of compensating non-reciprocal interference in adaptive TDD MIMO-OFDM systems Tongxin xuebao TDD MIMO OFDM AMC HARQ closed-loop feedback |
| title | Improved method of compensating non-reciprocal interference in adaptive TDD MIMO-OFDM systems |
| title_full | Improved method of compensating non-reciprocal interference in adaptive TDD MIMO-OFDM systems |
| title_fullStr | Improved method of compensating non-reciprocal interference in adaptive TDD MIMO-OFDM systems |
| title_full_unstemmed | Improved method of compensating non-reciprocal interference in adaptive TDD MIMO-OFDM systems |
| title_short | Improved method of compensating non-reciprocal interference in adaptive TDD MIMO-OFDM systems |
| title_sort | improved method of compensating non reciprocal interference in adaptive tdd mimo ofdm systems |
| topic | TDD MIMO OFDM AMC HARQ closed-loop feedback |
| url | http://www.joconline.com.cn/zh/article/74652698/ |
| work_keys_str_mv | AT zengduanyang1 improvedmethodofcompensatingnonreciprocalinterferenceinadaptivetddmimoofdmsystems AT songrongfang1 improvedmethodofcompensatingnonreciprocalinterferenceinadaptivetddmimoofdmsystems |