{"title":"基于OFDM、CDMA和MC-CDMA系统的I/Q不平衡分析方法","authors":"P. Rykaczewski, M. Valkama, M. Renfors","doi":"10.1109/RWS.2006.1615217","DOIUrl":null,"url":null,"abstract":"Growing requirements set upon communications transceivers lead to high sensitivity to non-idealities of analog front-end components. Mismatches in the amplitudes and phases of the I and Q signal branches is one of the major concerns resulting in insufficient rejection of the image frequency band. This paper presents a novel analytical model of I/Q imbalance in OFDM, CDMA and MC-CDMA based communications systems. According to the obtained results, I/Q imbalance effects depend heavily on the applied spreading code class and cell load in case of CDMA and MC-CDMA, which should be taken into account in the system and receiver design. Outcomes of the theoretical studies are verified by extensive system simulations.","PeriodicalId":244560,"journal":{"name":"2006 IEEE Radio and Wireless Symposium","volume":"10 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2006-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"13","resultStr":"{\"title\":\"Analytical approach to I/Q imbalance in OFDM, CDMA and MC-CDMA based systems\",\"authors\":\"P. Rykaczewski, M. Valkama, M. Renfors\",\"doi\":\"10.1109/RWS.2006.1615217\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Growing requirements set upon communications transceivers lead to high sensitivity to non-idealities of analog front-end components. Mismatches in the amplitudes and phases of the I and Q signal branches is one of the major concerns resulting in insufficient rejection of the image frequency band. This paper presents a novel analytical model of I/Q imbalance in OFDM, CDMA and MC-CDMA based communications systems. According to the obtained results, I/Q imbalance effects depend heavily on the applied spreading code class and cell load in case of CDMA and MC-CDMA, which should be taken into account in the system and receiver design. Outcomes of the theoretical studies are verified by extensive system simulations.\",\"PeriodicalId\":244560,\"journal\":{\"name\":\"2006 IEEE Radio and Wireless Symposium\",\"volume\":\"10 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2006-04-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"13\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2006 IEEE Radio and Wireless Symposium\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/RWS.2006.1615217\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2006 IEEE Radio and Wireless Symposium","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RWS.2006.1615217","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Analytical approach to I/Q imbalance in OFDM, CDMA and MC-CDMA based systems
Growing requirements set upon communications transceivers lead to high sensitivity to non-idealities of analog front-end components. Mismatches in the amplitudes and phases of the I and Q signal branches is one of the major concerns resulting in insufficient rejection of the image frequency band. This paper presents a novel analytical model of I/Q imbalance in OFDM, CDMA and MC-CDMA based communications systems. According to the obtained results, I/Q imbalance effects depend heavily on the applied spreading code class and cell load in case of CDMA and MC-CDMA, which should be taken into account in the system and receiver design. Outcomes of the theoretical studies are verified by extensive system simulations.
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