Sparse adaptive constant blind equalization algorithm for sparse multipath channel
In order to improve the convergence rate of the blind equalizer for sparse multipath channel,a novel blind equalization approach called l<sub>0</sub>-norm constraint proportionate normalized least mean square constant algorithm was proposed for M-order phase-shift keying (MPSK) signal.Ba...
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Editorial Department of Journal on Communications
2017-01-01
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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.2017017/ |
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| author | Si-yang MA Hua PENG Bin WANG |
| author_facet | Si-yang MA Hua PENG Bin WANG |
| author_sort | Si-yang MA |
| collection | DOAJ |
| description | In order to improve the convergence rate of the blind equalizer for sparse multipath channel,a novel blind equalization approach called l<sub>0</sub>-norm constraint proportionate normalized least mean square constant algorithm was proposed for M-order phase-shift keying (MPSK) signal.Based on the constant modulus characteristics of MPSK signal and the sparse property of equalizer,a new blind equalization cost function with the l<sub>0</sub>-norm penalty on the equalizer tap coefficients was firstly constructed.Then the update formula of the tap coefficients was derived according to the gradient descent algorithm.Moreover,the iteration step was updated by drawing upon the normalized proportionate factor.The algorithm not only assigned step sizes proportionate to the magnitude of the current individual tap weights,but also attracted the inactive taps to zero adaptively.Theoretical analysis and simulation results show that the proposed algorithm outperforms the existing blind equalization algorithms for sparse channel in reducing ISI and improving convergence rate. |
| format | Article |
| id | doaj-art-e4fc3b1ca2f04d328b6f5b534cffdadb |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2017-01-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-e4fc3b1ca2f04d328b6f5b534cffdadb2025-01-14T07:11:31ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2017-01-013814915759706883Sparse adaptive constant blind equalization algorithm for sparse multipath channelSi-yang MAHua PENGBin WANGIn order to improve the convergence rate of the blind equalizer for sparse multipath channel,a novel blind equalization approach called l<sub>0</sub>-norm constraint proportionate normalized least mean square constant algorithm was proposed for M-order phase-shift keying (MPSK) signal.Based on the constant modulus characteristics of MPSK signal and the sparse property of equalizer,a new blind equalization cost function with the l<sub>0</sub>-norm penalty on the equalizer tap coefficients was firstly constructed.Then the update formula of the tap coefficients was derived according to the gradient descent algorithm.Moreover,the iteration step was updated by drawing upon the normalized proportionate factor.The algorithm not only assigned step sizes proportionate to the magnitude of the current individual tap weights,but also attracted the inactive taps to zero adaptively.Theoretical analysis and simulation results show that the proposed algorithm outperforms the existing blind equalization algorithms for sparse channel in reducing ISI and improving convergence rate.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2017017/sparse multipath channelfast convergence blind equalizationl<sub>0</sub>-norm penaltyproportionate factor |
| spellingShingle | Si-yang MA Hua PENG Bin WANG Sparse adaptive constant blind equalization algorithm for sparse multipath channel Tongxin xuebao sparse multipath channel fast convergence blind equalization l<sub>0</sub>-norm penalty proportionate factor |
| title | Sparse adaptive constant blind equalization algorithm for sparse multipath channel |
| title_full | Sparse adaptive constant blind equalization algorithm for sparse multipath channel |
| title_fullStr | Sparse adaptive constant blind equalization algorithm for sparse multipath channel |
| title_full_unstemmed | Sparse adaptive constant blind equalization algorithm for sparse multipath channel |
| title_short | Sparse adaptive constant blind equalization algorithm for sparse multipath channel |
| title_sort | sparse adaptive constant blind equalization algorithm for sparse multipath channel |
| topic | sparse multipath channel fast convergence blind equalization l<sub>0</sub>-norm penalty proportionate factor |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2017017/ |
| work_keys_str_mv | AT siyangma sparseadaptiveconstantblindequalizationalgorithmforsparsemultipathchannel AT huapeng sparseadaptiveconstantblindequalizationalgorithmforsparsemultipathchannel AT binwang sparseadaptiveconstantblindequalizationalgorithmforsparsemultipathchannel |