Research of channel quantization and feedback strategies based on multiuser diversity MIMO-OFDM systems
Firstly, a quantization method was proposed by quantized value indicating the modulation level instead of the full values of channel quality information（CQI） and the achievable average spectrum efficiency showed no loss compared with perfect case.Secondly, employment of the integrated design that co...
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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 |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/74652421/ |
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| _version_ | 1841537621039251456 |
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| author | LIANG Xue-jun ZHU Guang-xi SU Gang WANG De-sheng |
| author_facet | LIANG Xue-jun ZHU Guang-xi SU Gang WANG De-sheng |
| author_sort | LIANG Xue-jun |
| collection | DOAJ |
| description | Firstly, a quantization method was proposed by quantized value indicating the modulation level instead of the full values of channel quality information（CQI） and the achievable average spectrum efficiency showed no loss compared with perfect case.Secondly, employment of the integrated design that combined with opportunistic, best, and hybrid feedback scheme was considered and the close-form expression of average spectrum efficiency was deduced in various case.Finally, the calculation of optimal feedback parameters was confirmed from two aspects of feedback channel capacity and capacity relative loss.Extensive simulations were presented to evaluate these proposed strategies.The results match with the numeral analysis very well.The proposed partial feedback schemes can reduce the feedback load greatly with the same system capability, only if the feedback parameters be chosen properly.Wherein, the hybrid feedback combined with quantization performs best and provides the instruction to design the channel feedback of practical systems. |
| format | Article |
| id | doaj-art-6e0cc5a9ab62468e81a00495228ba4cc |
| institution | Kabale University |
| 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-6e0cc5a9ab62468e81a00495228ba4cc2025-01-14T08:28:30ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2009-01-0130364274652421Research of channel quantization and feedback strategies based on multiuser diversity MIMO-OFDM systemsLIANG Xue-junZHU Guang-xiSU GangWANG De-shengFirstly, a quantization method was proposed by quantized value indicating the modulation level instead of the full values of channel quality information（CQI） and the achievable average spectrum efficiency showed no loss compared with perfect case.Secondly, employment of the integrated design that combined with opportunistic, best, and hybrid feedback scheme was considered and the close-form expression of average spectrum efficiency was deduced in various case.Finally, the calculation of optimal feedback parameters was confirmed from two aspects of feedback channel capacity and capacity relative loss.Extensive simulations were presented to evaluate these proposed strategies.The results match with the numeral analysis very well.The proposed partial feedback schemes can reduce the feedback load greatly with the same system capability, only if the feedback parameters be chosen properly.Wherein, the hybrid feedback combined with quantization performs best and provides the instruction to design the channel feedback of practical systems.http://www.joconline.com.cn/zh/article/74652421/MIMOOFDMmultiuser diversitychannel quantizationfeedback |
| spellingShingle | LIANG Xue-jun ZHU Guang-xi SU Gang WANG De-sheng Research of channel quantization and feedback strategies based on multiuser diversity MIMO-OFDM systems Tongxin xuebao MIMO OFDM multiuser diversity channel quantization feedback |
| title | Research of channel quantization and feedback strategies based on multiuser diversity MIMO-OFDM systems |
| title_full | Research of channel quantization and feedback strategies based on multiuser diversity MIMO-OFDM systems |
| title_fullStr | Research of channel quantization and feedback strategies based on multiuser diversity MIMO-OFDM systems |
| title_full_unstemmed | Research of channel quantization and feedback strategies based on multiuser diversity MIMO-OFDM systems |
| title_short | Research of channel quantization and feedback strategies based on multiuser diversity MIMO-OFDM systems |
| title_sort | research of channel quantization and feedback strategies based on multiuser diversity mimo ofdm systems |
| topic | MIMO OFDM multiuser diversity channel quantization feedback |
| url | http://www.joconline.com.cn/zh/article/74652421/ |
| work_keys_str_mv | AT liangxuejun researchofchannelquantizationandfeedbackstrategiesbasedonmultiuserdiversitymimoofdmsystems AT zhuguangxi researchofchannelquantizationandfeedbackstrategiesbasedonmultiuserdiversitymimoofdmsystems AT sugang researchofchannelquantizationandfeedbackstrategiesbasedonmultiuserdiversitymimoofdmsystems AT wangdesheng researchofchannelquantizationandfeedbackstrategiesbasedonmultiuserdiversitymimoofdmsystems |