Estimation scheme for parameters of wireless channel model in OFDM communication systems
The conventional channel estimator in OFDM system was designed to cope with the worst-case channel condi-tion,thus performance degradation can be induced due to the imperfect channel estimation.Though wiener filter based on the minimum mean-squared error（MMSE） is the optimal linear estimator,it requ...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2007-01-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/74658257/ |
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| _version_ | 1841537448391213056 |
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| author | WANG Yong GE Jian-hua WU Xiao-li |
| author_facet | WANG Yong GE Jian-hua WU Xiao-li |
| author_sort | WANG Yong |
| collection | DOAJ |
| description | The conventional channel estimator in OFDM system was designed to cope with the worst-case channel condi-tion,thus performance degradation can be induced due to the imperfect channel estimation.Though wiener filter based on the minimum mean-squared error（MMSE） is the optimal linear estimator,it requires the prior information of transmis-sion channel.In order to select the near optimal prestored channel interpolation filter coefficients,three channel parame-ters detecting methods including maximum multipath delay,Doppler frequency and SNR based on the time and fre-quency correlation functions of the channel,the Euclidean distance of hard-decision in pilots position respectively,were proposed.The method proposed with low complexity allows an efficient implementation for adaptive channel estimation algorithm as well as multi-user OFDM systems. |
| format | Article |
| id | doaj-art-54df5faa2bfc474fae71107745e07ab2 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2007-01-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-54df5faa2bfc474fae71107745e07ab22025-01-14T08:34:40ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2007-01-01111574658257Estimation scheme for parameters of wireless channel model in OFDM communication systemsWANG YongGE Jian-huaWU Xiao-liThe conventional channel estimator in OFDM system was designed to cope with the worst-case channel condi-tion,thus performance degradation can be induced due to the imperfect channel estimation.Though wiener filter based on the minimum mean-squared error（MMSE） is the optimal linear estimator,it requires the prior information of transmis-sion channel.In order to select the near optimal prestored channel interpolation filter coefficients,three channel parame-ters detecting methods including maximum multipath delay,Doppler frequency and SNR based on the time and fre-quency correlation functions of the channel,the Euclidean distance of hard-decision in pilots position respectively,were proposed.The method proposed with low complexity allows an efficient implementation for adaptive channel estimation algorithm as well as multi-user OFDM systems.http://www.joconline.com.cn/zh/article/74658257/channel estimationOFDMmultipath delayDoppler frequencysignal noise ratio |
| spellingShingle | WANG Yong GE Jian-hua WU Xiao-li Estimation scheme for parameters of wireless channel model in OFDM communication systems Tongxin xuebao channel estimation OFDM multipath delay Doppler frequency signal noise ratio |
| title | Estimation scheme for parameters of wireless channel model in OFDM communication systems |
| title_full | Estimation scheme for parameters of wireless channel model in OFDM communication systems |
| title_fullStr | Estimation scheme for parameters of wireless channel model in OFDM communication systems |
| title_full_unstemmed | Estimation scheme for parameters of wireless channel model in OFDM communication systems |
| title_short | Estimation scheme for parameters of wireless channel model in OFDM communication systems |
| title_sort | estimation scheme for parameters of wireless channel model in ofdm communication systems |
| topic | channel estimation OFDM multipath delay Doppler frequency signal noise ratio |
| url | http://www.joconline.com.cn/zh/article/74658257/ |
| work_keys_str_mv | AT wangyong estimationschemeforparametersofwirelesschannelmodelinofdmcommunicationsystems AT gejianhua estimationschemeforparametersofwirelesschannelmodelinofdmcommunicationsystems AT wuxiaoli estimationschemeforparametersofwirelesschannelmodelinofdmcommunicationsystems |