Blind separation of asymmetric PCMA signal based on soft information joint correction
On the basis of a blind separation structure with low complexity,an efficient blind separation algorithm based on soft information joint correction was proposed for asymmetric PCMA to improve the demodulation performance of strong and weak signals.By utilizing the demodulation mutual influence betwe...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2017-04-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2017044/ |
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| _version_ | 1841539529042821120 |
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| author | Qiang HUANG Hua PENG Tian-yun LI Ke-xian GONG |
| author_facet | Qiang HUANG Hua PENG Tian-yun LI Ke-xian GONG |
| author_sort | Qiang HUANG |
| collection | DOAJ |
| description | On the basis of a blind separation structure with low complexity,an efficient blind separation algorithm based on soft information joint correction was proposed for asymmetric PCMA to improve the demodulation performance of strong and weak signals.By utilizing the demodulation mutual influence between the strong and weak signals,this algorithm tried to correct the receiving symbols of strong signal with high error probability.Comparing the symbol constellation quality (soft information) of signals before and after correction,it can be decided whether the hard decision values of strong and weak signals need to be modified,which efficiently reduce the demodulation error rate of strong and weak signals.The simulation results show that,the demodulation error rate of strong and weak signals can be reduced by nearly two orders of magnitude after joint correction especially when the signal to noise ratio of strong signal is higher than 17 dB,and the computational complexity of this algorithm is lower than that of the conventional reconstruction cancellation algorithm. |
| format | Article |
| id | doaj-art-aaf77b3818af4537bdfdc28c135f1527 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2017-04-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-aaf77b3818af4537bdfdc28c135f15272025-01-14T07:12:06ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2017-04-013817818959709338Blind separation of asymmetric PCMA signal based on soft information joint correctionQiang HUANGHua PENGTian-yun LIKe-xian GONGOn the basis of a blind separation structure with low complexity,an efficient blind separation algorithm based on soft information joint correction was proposed for asymmetric PCMA to improve the demodulation performance of strong and weak signals.By utilizing the demodulation mutual influence between the strong and weak signals,this algorithm tried to correct the receiving symbols of strong signal with high error probability.Comparing the symbol constellation quality (soft information) of signals before and after correction,it can be decided whether the hard decision values of strong and weak signals need to be modified,which efficiently reduce the demodulation error rate of strong and weak signals.The simulation results show that,the demodulation error rate of strong and weak signals can be reduced by nearly two orders of magnitude after joint correction especially when the signal to noise ratio of strong signal is higher than 17 dB,and the computational complexity of this algorithm is lower than that of the conventional reconstruction cancellation algorithm.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2017044/asymmetric PCMAblind separationsoft informationjoint correction |
| spellingShingle | Qiang HUANG Hua PENG Tian-yun LI Ke-xian GONG Blind separation of asymmetric PCMA signal based on soft information joint correction Tongxin xuebao asymmetric PCMA blind separation soft information joint correction |
| title | Blind separation of asymmetric PCMA signal based on soft information joint correction |
| title_full | Blind separation of asymmetric PCMA signal based on soft information joint correction |
| title_fullStr | Blind separation of asymmetric PCMA signal based on soft information joint correction |
| title_full_unstemmed | Blind separation of asymmetric PCMA signal based on soft information joint correction |
| title_short | Blind separation of asymmetric PCMA signal based on soft information joint correction |
| title_sort | blind separation of asymmetric pcma signal based on soft information joint correction |
| topic | asymmetric PCMA blind separation soft information joint correction |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2017044/ |
| work_keys_str_mv | AT qianghuang blindseparationofasymmetricpcmasignalbasedonsoftinformationjointcorrection AT huapeng blindseparationofasymmetricpcmasignalbasedonsoftinformationjointcorrection AT tianyunli blindseparationofasymmetricpcmasignalbasedonsoftinformationjointcorrection AT kexiangong blindseparationofasymmetricpcmasignalbasedonsoftinformationjointcorrection |