Mitsuyasu Deguchi, Y. Kida, Yoshitaka Watanabe, Takuya Shimura
{"title":"利用自适应下变频抑制同步误差对水下声学通信的影响","authors":"Mitsuyasu Deguchi, Y. Kida, Yoshitaka Watanabe, Takuya Shimura","doi":"10.35848/1347-4065/ad38c9","DOIUrl":null,"url":null,"abstract":"\n In underwater acoustic communication, inaccurate synchronization can cause an incorrect estimation of the uniform Doppler shift, thereby degrading demodulation performance. In this paper, the effect of inaccurate synchronization on demodulation is mathematically described, theoretically demonstrating that adaptive down-conversion, which has been proposed to suppress the effects of nonuniform Doppler shift, reduces the degradation of demodulation performance caused by inaccurate synchronization. The improvement in demodulation performance by adaptive down-conversion was evaluated using experimental data. The demodulation results including the intended synchronization errors clearly show that adaptive down-conversion reduces the effects of the synchronization errors and improves demodulation performance in cases with inaccurate synchronization.","PeriodicalId":505044,"journal":{"name":"Japanese Journal of Applied Physics","volume":"88 16","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Suppression of effects of the synchronization error with adaptive down-conversion for underwater acoustic communication\",\"authors\":\"Mitsuyasu Deguchi, Y. Kida, Yoshitaka Watanabe, Takuya Shimura\",\"doi\":\"10.35848/1347-4065/ad38c9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n In underwater acoustic communication, inaccurate synchronization can cause an incorrect estimation of the uniform Doppler shift, thereby degrading demodulation performance. In this paper, the effect of inaccurate synchronization on demodulation is mathematically described, theoretically demonstrating that adaptive down-conversion, which has been proposed to suppress the effects of nonuniform Doppler shift, reduces the degradation of demodulation performance caused by inaccurate synchronization. The improvement in demodulation performance by adaptive down-conversion was evaluated using experimental data. The demodulation results including the intended synchronization errors clearly show that adaptive down-conversion reduces the effects of the synchronization errors and improves demodulation performance in cases with inaccurate synchronization.\",\"PeriodicalId\":505044,\"journal\":{\"name\":\"Japanese Journal of Applied Physics\",\"volume\":\"88 16\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-03-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Japanese Journal of Applied Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.35848/1347-4065/ad38c9\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Japanese Journal of Applied Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.35848/1347-4065/ad38c9","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Suppression of effects of the synchronization error with adaptive down-conversion for underwater acoustic communication
In underwater acoustic communication, inaccurate synchronization can cause an incorrect estimation of the uniform Doppler shift, thereby degrading demodulation performance. In this paper, the effect of inaccurate synchronization on demodulation is mathematically described, theoretically demonstrating that adaptive down-conversion, which has been proposed to suppress the effects of nonuniform Doppler shift, reduces the degradation of demodulation performance caused by inaccurate synchronization. The improvement in demodulation performance by adaptive down-conversion was evaluated using experimental data. The demodulation results including the intended synchronization errors clearly show that adaptive down-conversion reduces the effects of the synchronization errors and improves demodulation performance in cases with inaccurate synchronization.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
