Iterative algorithm on single-channel blind separation and decoding of co-frequency modulated signals
An algorithm was proposed to exploit the codes in iterative single-channel blind separation and decoding of two co-frequency modulated signals with long-constraint channel codes.The output log-likelihood ratio（LLR） values of the decoder were used as a prior LLR fed back to the separator to improve t...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2011-01-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/74419544/ |
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| author | LIAO Can-hui TU Shi-long WAN Jian |
| author_facet | LIAO Can-hui TU Shi-long WAN Jian |
| author_sort | LIAO Can-hui |
| collection | DOAJ |
| description | An algorithm was proposed to exploit the codes in iterative single-channel blind separation and decoding of two co-frequency modulated signals with long-constraint channel codes.The output log-likelihood ratio（LLR） values of the decoder were used as a prior LLR fed back to the separator to improve the separation performance.Special emphases were laid on soft input soft output blind separation,maximum a posteriori（MAP） decoding and LLR interaction between separator and decoder.Simulation results show that the proposed algorithm can make a significant improvement in per-formance over the algorithms without iterations.For BPSK signals with（2,1,6） convolutional codes and random inter-leaving,a gain of about 2dB in signal-noise ratio can be obtained after two iterations. |
| format | Article |
| id | doaj-art-bb338bdd59a644b8ae1227ca92757a11 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2011-01-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-bb338bdd59a644b8ae1227ca92757a112025-01-14T08:22:28ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2011-01-013211111774419544Iterative algorithm on single-channel blind separation and decoding of co-frequency modulated signalsLIAO Can-huiTU Shi-longWAN JianAn algorithm was proposed to exploit the codes in iterative single-channel blind separation and decoding of two co-frequency modulated signals with long-constraint channel codes.The output log-likelihood ratio（LLR） values of the decoder were used as a prior LLR fed back to the separator to improve the separation performance.Special emphases were laid on soft input soft output blind separation,maximum a posteriori（MAP） decoding and LLR interaction between separator and decoder.Simulation results show that the proposed algorithm can make a significant improvement in per-formance over the algorithms without iterations.For BPSK signals with（2,1,6） convolutional codes and random inter-leaving,a gain of about 2dB in signal-noise ratio can be obtained after two iterations.http://www.joconline.com.cn/zh/article/74419544/signal processingsingle-channel blind separationPSPMAP decoding |
| spellingShingle | LIAO Can-hui TU Shi-long WAN Jian Iterative algorithm on single-channel blind separation and decoding of co-frequency modulated signals Tongxin xuebao signal processing single-channel blind separation PSP MAP decoding |
| title | Iterative algorithm on single-channel blind separation and decoding of co-frequency modulated signals |
| title_full | Iterative algorithm on single-channel blind separation and decoding of co-frequency modulated signals |
| title_fullStr | Iterative algorithm on single-channel blind separation and decoding of co-frequency modulated signals |
| title_full_unstemmed | Iterative algorithm on single-channel blind separation and decoding of co-frequency modulated signals |
| title_short | Iterative algorithm on single-channel blind separation and decoding of co-frequency modulated signals |
| title_sort | iterative algorithm on single channel blind separation and decoding of co frequency modulated signals |
| topic | signal processing single-channel blind separation PSP MAP decoding |
| url | http://www.joconline.com.cn/zh/article/74419544/ |
| work_keys_str_mv | AT liaocanhui iterativealgorithmonsinglechannelblindseparationanddecodingofcofrequencymodulatedsignals AT tushilong iterativealgorithmonsinglechannelblindseparationanddecodingofcofrequencymodulatedsignals AT wanjian iterativealgorithmonsinglechannelblindseparationanddecodingofcofrequencymodulatedsignals |