Turbo iterative acquisition algorithm for satellite high-mobility DSSS signal
To solve the problems of the low acquisition probability and high computational complexity in satellite high-mobility communications, a new factor graph was designed for acquisition of the high-mobility direct sequence spread spectrum (DSSS) signal, where time-varying Doppler rates were modeled by t...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2021-08-01
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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.2021153/ |
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| _version_ | 1841539270111657984 |
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| author | Chunxiao JIANG Jiawei WANG |
| author_facet | Chunxiao JIANG Jiawei WANG |
| author_sort | Chunxiao JIANG |
| collection | DOAJ |
| description | To solve the problems of the low acquisition probability and high computational complexity in satellite high-mobility communications, a new factor graph was designed for acquisition of the high-mobility direct sequence spread spectrum (DSSS) signal, where time-varying Doppler rates were modeled by the random walk model.Based on the proposed factor graph, the turbo iterative DSSS signal acquisition algorithm was proposed.In the Doppler-estimation loop, the negative influence of Doppler frequency offsets and Doppler rates could be eliminated effectively.Then in the code-detection loop, constraints of each chip was used to recover the received signal, to achieve DSSS signal acquisition.Simulation results show that the proposed algorithm is capable of improving the acquisition performance at less 1.3 dB with low computational complexity. |
| format | Article |
| id | doaj-art-4135f59ce9e94efd8bb9857e8c6b7ac2 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2021-08-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-4135f59ce9e94efd8bb9857e8c6b7ac22025-01-14T07:22:16ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2021-08-0142152459743130Turbo iterative acquisition algorithm for satellite high-mobility DSSS signalChunxiao JIANGJiawei WANGTo solve the problems of the low acquisition probability and high computational complexity in satellite high-mobility communications, a new factor graph was designed for acquisition of the high-mobility direct sequence spread spectrum (DSSS) signal, where time-varying Doppler rates were modeled by the random walk model.Based on the proposed factor graph, the turbo iterative DSSS signal acquisition algorithm was proposed.In the Doppler-estimation loop, the negative influence of Doppler frequency offsets and Doppler rates could be eliminated effectively.Then in the code-detection loop, constraints of each chip was used to recover the received signal, to achieve DSSS signal acquisition.Simulation results show that the proposed algorithm is capable of improving the acquisition performance at less 1.3 dB with low computational complexity.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2021153/m sequencehigh-mobility communicationfactor graphmessage passing |
| spellingShingle | Chunxiao JIANG Jiawei WANG Turbo iterative acquisition algorithm for satellite high-mobility DSSS signal Tongxin xuebao m sequence high-mobility communication factor graph message passing |
| title | Turbo iterative acquisition algorithm for satellite high-mobility DSSS signal |
| title_full | Turbo iterative acquisition algorithm for satellite high-mobility DSSS signal |
| title_fullStr | Turbo iterative acquisition algorithm for satellite high-mobility DSSS signal |
| title_full_unstemmed | Turbo iterative acquisition algorithm for satellite high-mobility DSSS signal |
| title_short | Turbo iterative acquisition algorithm for satellite high-mobility DSSS signal |
| title_sort | turbo iterative acquisition algorithm for satellite high mobility dsss signal |
| topic | m sequence high-mobility communication factor graph message passing |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2021153/ |
| work_keys_str_mv | AT chunxiaojiang turboiterativeacquisitionalgorithmforsatellitehighmobilitydssssignal AT jiaweiwang turboiterativeacquisitionalgorithmforsatellitehighmobilitydssssignal |