{"title":"利用28ghz室内分布式多用户MIMO测量传播信道变化和互易性","authors":"N. Tawa, T. Kuwabara, Y. Maruta, T. Kaneko","doi":"10.1109/RWS45077.2020.9050046","DOIUrl":null,"url":null,"abstract":"This paper describes the indoor experimental verifications of a 28 GHz multi-user multiple-input multiple-output testbed considering 5G networks. A base station (BS) of the testbed has eight transceivers and eight distributed antenna units consisting of 15 elements inline antennas. The testbed is built at total reflection circumstances in a shield room. The over-the-air (OTA) experiment with single user equipment (UE) demonstrates that channel quality variations in the UE locations, frequency, and time are decreased by using the eight antenna units. The OTA experiment with two UEs shows uplink to downlink channel reciprocity by using zero-forcing pre-coded signals in millimeter-wave.","PeriodicalId":184822,"journal":{"name":"2020 IEEE Radio and Wireless Symposium (RWS)","volume":"263 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Measuring Propagation Channel Variations and Reciprocity using 28 GHz Indoor Distributed Multi-user MIMO\",\"authors\":\"N. Tawa, T. Kuwabara, Y. Maruta, T. Kaneko\",\"doi\":\"10.1109/RWS45077.2020.9050046\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper describes the indoor experimental verifications of a 28 GHz multi-user multiple-input multiple-output testbed considering 5G networks. A base station (BS) of the testbed has eight transceivers and eight distributed antenna units consisting of 15 elements inline antennas. The testbed is built at total reflection circumstances in a shield room. The over-the-air (OTA) experiment with single user equipment (UE) demonstrates that channel quality variations in the UE locations, frequency, and time are decreased by using the eight antenna units. The OTA experiment with two UEs shows uplink to downlink channel reciprocity by using zero-forcing pre-coded signals in millimeter-wave.\",\"PeriodicalId\":184822,\"journal\":{\"name\":\"2020 IEEE Radio and Wireless Symposium (RWS)\",\"volume\":\"263 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2020 IEEE Radio and Wireless Symposium (RWS)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/RWS45077.2020.9050046\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 IEEE Radio and Wireless Symposium (RWS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RWS45077.2020.9050046","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Measuring Propagation Channel Variations and Reciprocity using 28 GHz Indoor Distributed Multi-user MIMO
This paper describes the indoor experimental verifications of a 28 GHz multi-user multiple-input multiple-output testbed considering 5G networks. A base station (BS) of the testbed has eight transceivers and eight distributed antenna units consisting of 15 elements inline antennas. The testbed is built at total reflection circumstances in a shield room. The over-the-air (OTA) experiment with single user equipment (UE) demonstrates that channel quality variations in the UE locations, frequency, and time are decreased by using the eight antenna units. The OTA experiment with two UEs shows uplink to downlink channel reciprocity by using zero-forcing pre-coded signals in millimeter-wave.
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