Yan Li, Biaodi Liu, Ning Jia, Jianchun Huang, D. Xiao, Shengming Guo
{"title":"利用金码映射序列扩频水声通信的研究","authors":"Yan Li, Biaodi Liu, Ning Jia, Jianchun Huang, D. Xiao, Shengming Guo","doi":"10.1145/3491315.3491333","DOIUrl":null,"url":null,"abstract":"Parallel combinatory spread spectrum (PCSS) is a solution to increase the data rate of spread spectrum communication system. However, when multiple spread spectrum sequences are combined, the envelope is not constant, which will consequently reduce the energy efficiency. Hence, mapping sequences spread spectrum is introduced, which can simultaneously transmit three sequences by transforming three spread spectrum sequences into a constant envelope sequence before transmission. The mapping sequences spread spectrum can effectively reduce the peak-to-average power ratio (PAPR) of the PCSS signal. However, there is still a problem with mapping sequences spread spectrum: when three Gold codes are combined and mapped into a binary sequence, a pseudo correlation peak will appear caused by an interference Gold code when the received signal is correlated with normalized replicas of M possible transmission signals. In this paper, a PCSS underwater acoustic communication system based on the phase differences of correlation peaks method (PDCP-PCSS) is proposed, which can identify and eliminate the pseudo correlation peak by judging the phase differences of the correlation peaks. Compared with the conventional parallel combinatory spread spectrum underwater acoustic communication method, the proposed method can improve the performance of mapping sequences spread spectrum communication system effectively.","PeriodicalId":191580,"journal":{"name":"Proceedings of the 15th International Conference on Underwater Networks & Systems","volume":"12 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Study of Mapping Sequences Spread Spectrum Underwater Acoustic Communications Using Gold Codes\",\"authors\":\"Yan Li, Biaodi Liu, Ning Jia, Jianchun Huang, D. Xiao, Shengming Guo\",\"doi\":\"10.1145/3491315.3491333\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Parallel combinatory spread spectrum (PCSS) is a solution to increase the data rate of spread spectrum communication system. However, when multiple spread spectrum sequences are combined, the envelope is not constant, which will consequently reduce the energy efficiency. Hence, mapping sequences spread spectrum is introduced, which can simultaneously transmit three sequences by transforming three spread spectrum sequences into a constant envelope sequence before transmission. The mapping sequences spread spectrum can effectively reduce the peak-to-average power ratio (PAPR) of the PCSS signal. However, there is still a problem with mapping sequences spread spectrum: when three Gold codes are combined and mapped into a binary sequence, a pseudo correlation peak will appear caused by an interference Gold code when the received signal is correlated with normalized replicas of M possible transmission signals. In this paper, a PCSS underwater acoustic communication system based on the phase differences of correlation peaks method (PDCP-PCSS) is proposed, which can identify and eliminate the pseudo correlation peak by judging the phase differences of the correlation peaks. Compared with the conventional parallel combinatory spread spectrum underwater acoustic communication method, the proposed method can improve the performance of mapping sequences spread spectrum communication system effectively.\",\"PeriodicalId\":191580,\"journal\":{\"name\":\"Proceedings of the 15th International Conference on Underwater Networks & Systems\",\"volume\":\"12 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-11-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the 15th International Conference on Underwater Networks & Systems\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1145/3491315.3491333\",\"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 15th International Conference on Underwater Networks & Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1145/3491315.3491333","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A Study of Mapping Sequences Spread Spectrum Underwater Acoustic Communications Using Gold Codes
Parallel combinatory spread spectrum (PCSS) is a solution to increase the data rate of spread spectrum communication system. However, when multiple spread spectrum sequences are combined, the envelope is not constant, which will consequently reduce the energy efficiency. Hence, mapping sequences spread spectrum is introduced, which can simultaneously transmit three sequences by transforming three spread spectrum sequences into a constant envelope sequence before transmission. The mapping sequences spread spectrum can effectively reduce the peak-to-average power ratio (PAPR) of the PCSS signal. However, there is still a problem with mapping sequences spread spectrum: when three Gold codes are combined and mapped into a binary sequence, a pseudo correlation peak will appear caused by an interference Gold code when the received signal is correlated with normalized replicas of M possible transmission signals. In this paper, a PCSS underwater acoustic communication system based on the phase differences of correlation peaks method (PDCP-PCSS) is proposed, which can identify and eliminate the pseudo correlation peak by judging the phase differences of the correlation peaks. Compared with the conventional parallel combinatory spread spectrum underwater acoustic communication method, the proposed method can improve the performance of mapping sequences spread spectrum communication system effectively.