{"title":"信道非线性对基于模拟器的高速数据解调性能的影响","authors":"Zheshuai Zhou, Hongbing Fang, Yubo Tang, Yan Li, Jiuzhou Zhao, Hui Zhang","doi":"10.1145/3501409.3501661","DOIUrl":null,"url":null,"abstract":"This paper mainly studies the influence of channel nonlinearity on the high-speed demodulation performance of satellite with 2/3 LDPC encoding and 600Mbps speed. Through the design of a channel simulator-based test plan, a single channel characteristic test is carried out, focusing on the analysis of the impact of the amplitude-frequency characteristic, group delay, phase noise and other single channel nonlinear characteristics on the high-speed demodulation performance, and the influence of channel nonlinearity on high-speed data demodulation performance is analyzed through the comprehensive channel characteristic test. Results show that the measured phase noise and amplitude-frequency characteristic curves have little influence on the bit error rate, and the group delay has a greater influence on the bit error rate. When the group delay fluctuates more than $pL2ns, the demodulation threshold is increased by 10dB. In addition, other nonlinear characteristics, such as third-order intermodulation, AM/PM and AM/AM, are also analyzed.","PeriodicalId":191106,"journal":{"name":"Proceedings of the 2021 5th International Conference on Electronic Information Technology and Computer Engineering","volume":"6 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of channel nonlinearity on high-speed data demodulation performance based on simulator\",\"authors\":\"Zheshuai Zhou, Hongbing Fang, Yubo Tang, Yan Li, Jiuzhou Zhao, Hui Zhang\",\"doi\":\"10.1145/3501409.3501661\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper mainly studies the influence of channel nonlinearity on the high-speed demodulation performance of satellite with 2/3 LDPC encoding and 600Mbps speed. Through the design of a channel simulator-based test plan, a single channel characteristic test is carried out, focusing on the analysis of the impact of the amplitude-frequency characteristic, group delay, phase noise and other single channel nonlinear characteristics on the high-speed demodulation performance, and the influence of channel nonlinearity on high-speed data demodulation performance is analyzed through the comprehensive channel characteristic test. Results show that the measured phase noise and amplitude-frequency characteristic curves have little influence on the bit error rate, and the group delay has a greater influence on the bit error rate. When the group delay fluctuates more than $pL2ns, the demodulation threshold is increased by 10dB. In addition, other nonlinear characteristics, such as third-order intermodulation, AM/PM and AM/AM, are also analyzed.\",\"PeriodicalId\":191106,\"journal\":{\"name\":\"Proceedings of the 2021 5th International Conference on Electronic Information Technology and Computer Engineering\",\"volume\":\"6 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-10-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the 2021 5th International Conference on Electronic Information Technology and Computer Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1145/3501409.3501661\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 2021 5th International Conference on Electronic Information Technology and Computer Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1145/3501409.3501661","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Influence of channel nonlinearity on high-speed data demodulation performance based on simulator
This paper mainly studies the influence of channel nonlinearity on the high-speed demodulation performance of satellite with 2/3 LDPC encoding and 600Mbps speed. Through the design of a channel simulator-based test plan, a single channel characteristic test is carried out, focusing on the analysis of the impact of the amplitude-frequency characteristic, group delay, phase noise and other single channel nonlinear characteristics on the high-speed demodulation performance, and the influence of channel nonlinearity on high-speed data demodulation performance is analyzed through the comprehensive channel characteristic test. Results show that the measured phase noise and amplitude-frequency characteristic curves have little influence on the bit error rate, and the group delay has a greater influence on the bit error rate. When the group delay fluctuates more than $pL2ns, the demodulation threshold is increased by 10dB. In addition, other nonlinear characteristics, such as third-order intermodulation, AM/PM and AM/AM, are also analyzed.
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