{"title":"Research on Multiple-input multiple-output spread spectrum underwater acoustic communication∗","authors":"Pengyu Du, Chao Wang, Xiaohui Zhu","doi":"10.1145/3491315.3491346","DOIUrl":null,"url":null,"abstract":"The main interference in multiple-input multiple-output (MIMO) underwater acoustic communication (UAC) system is co-channel interference (CoI). MIMO time reversal mirror (TRM) processing is a common method to suppress CoI. In this paper, based on MIMO TRM processing, a MIMO frequency domain equalization (FDE) method is proposed. By designing a focus shield weight vector in the frequency domain and multiplying the received signal, the undesired signal interference in MIMO system can be set to zero and cancelled, thus improving the decoding performance of the desired signal. The simulation results show that the proposed MIMO FDE method is significantly better than the MIMO TRM method when there is a large difference in the received signal power.","PeriodicalId":191580,"journal":{"name":"Proceedings of the 15th International Conference on Underwater Networks & Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 15th International Conference on Underwater Networks & Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1145/3491315.3491346","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
The main interference in multiple-input multiple-output (MIMO) underwater acoustic communication (UAC) system is co-channel interference (CoI). MIMO time reversal mirror (TRM) processing is a common method to suppress CoI. In this paper, based on MIMO TRM processing, a MIMO frequency domain equalization (FDE) method is proposed. By designing a focus shield weight vector in the frequency domain and multiplying the received signal, the undesired signal interference in MIMO system can be set to zero and cancelled, thus improving the decoding performance of the desired signal. The simulation results show that the proposed MIMO FDE method is significantly better than the MIMO TRM method when there is a large difference in the received signal power.
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