Sparse channel estimation for OFDM system weighted l<sub>p</sub> norm
The new lp norm was introduced to substitute the l<sub>0</sub> and l<sub>1</sub> norm,as they met some problems when used to estimate sparse channel in LMS algorithm.By analyzing the l<sub>p</sub> norm,the optimal value of p was obtained,it was 1/2.Then a most spa...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2012-11-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2012.z2.036/ |
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| Summary: | The new lp norm was introduced to substitute the l<sub>0</sub> and l<sub>1</sub> norm,as they met some problems when used to estimate sparse channel in LMS algorithm.By analyzing the l<sub>p</sub> norm,the optimal value of p was obtained,it was 1/2.Then a most sparse solution could be gotten for channel estimation.And it both saved the cost for training sequence and solved the lack of data size by using data reusing method.Simulation results show that the l<sub>p</sub>-LMS performs better than the existing methods,combining with data reusing when the training sequence is certain short. |
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| ISSN: | 1000-436X |