Sparse channel fast reconstruction algorithm for OFDM system based on IOC-CSMP
A fast reconstruction algorithm based on inner product optimization and sparsity updating constraint was proposed for OFDM system channel estimation when the number of channel paths was unknown.By constructing and updating the selection vector, the inner product operation was reduced by using the at...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2023-02-01
|
| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2023034/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841540058830602240 |
|---|---|
| author | Wei CUI Ying YU Haixia YU Chao CHEN Yunpeng LI |
| author_facet | Wei CUI Ying YU Haixia YU Chao CHEN Yunpeng LI |
| author_sort | Wei CUI |
| collection | DOAJ |
| description | A fast reconstruction algorithm based on inner product optimization and sparsity updating constraint was proposed for OFDM system channel estimation when the number of channel paths was unknown.By constructing and updating the selection vector, the inner product operation was reduced by using the atoms corresponding to the non-zero index of the selection vector.The atoms were optimized based on compressed sampling and backtracking strategies, and the channel estimation was completed by matching pursuit.The sparsity update and the stop condition for the algorithm was achieved by the energy difference between the two adjacent channel estimation so as to ensure fast convergence of the algorithm.The simulation results show that the proposed algorithm has better channel estimation performance than the least square algorithm, minimum mean square error algorithm, sparsity adaptive matching pursuit algorithm and adaptive regularized compressed sampling matching pursuit algorithm, and consumes less channel estimation time than the two adaptive methods. |
| format | Article |
| id | doaj-art-9706fcdc491e4758acd43f3f909f51a0 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2023-02-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-9706fcdc491e4758acd43f3f909f51a02025-01-14T06:23:04ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2023-02-0144525859386873Sparse channel fast reconstruction algorithm for OFDM system based on IOC-CSMPWei CUIYing YUHaixia YUChao CHENYunpeng LIA fast reconstruction algorithm based on inner product optimization and sparsity updating constraint was proposed for OFDM system channel estimation when the number of channel paths was unknown.By constructing and updating the selection vector, the inner product operation was reduced by using the atoms corresponding to the non-zero index of the selection vector.The atoms were optimized based on compressed sampling and backtracking strategies, and the channel estimation was completed by matching pursuit.The sparsity update and the stop condition for the algorithm was achieved by the energy difference between the two adjacent channel estimation so as to ensure fast convergence of the algorithm.The simulation results show that the proposed algorithm has better channel estimation performance than the least square algorithm, minimum mean square error algorithm, sparsity adaptive matching pursuit algorithm and adaptive regularized compressed sampling matching pursuit algorithm, and consumes less channel estimation time than the two adaptive methods.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2023034/compressed samplinginner productbacktracking strategysparsity adaptivechannel estimation |
| spellingShingle | Wei CUI Ying YU Haixia YU Chao CHEN Yunpeng LI Sparse channel fast reconstruction algorithm for OFDM system based on IOC-CSMP Tongxin xuebao compressed sampling inner product backtracking strategy sparsity adaptive channel estimation |
| title | Sparse channel fast reconstruction algorithm for OFDM system based on IOC-CSMP |
| title_full | Sparse channel fast reconstruction algorithm for OFDM system based on IOC-CSMP |
| title_fullStr | Sparse channel fast reconstruction algorithm for OFDM system based on IOC-CSMP |
| title_full_unstemmed | Sparse channel fast reconstruction algorithm for OFDM system based on IOC-CSMP |
| title_short | Sparse channel fast reconstruction algorithm for OFDM system based on IOC-CSMP |
| title_sort | sparse channel fast reconstruction algorithm for ofdm system based on ioc csmp |
| topic | compressed sampling inner product backtracking strategy sparsity adaptive channel estimation |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2023034/ |
| work_keys_str_mv | AT weicui sparsechannelfastreconstructionalgorithmforofdmsystembasedonioccsmp AT yingyu sparsechannelfastreconstructionalgorithmforofdmsystembasedonioccsmp AT haixiayu sparsechannelfastreconstructionalgorithmforofdmsystembasedonioccsmp AT chaochen sparsechannelfastreconstructionalgorithmforofdmsystembasedonioccsmp AT yunpengli sparsechannelfastreconstructionalgorithmforofdmsystembasedonioccsmp |