{"title":"Digital OFDM transmitter based on multi-bit delta sigma modulator","authors":"Zaijun Hua, Xiangning Fan, Li Tang","doi":"10.1109/COMCAS.2015.7360437","DOIUrl":null,"url":null,"abstract":"An orthogonal frequency division multiplexing transmitter based on multi-bit delta sigma modulator with switch mode power amplifiers is presented. Multi-bit up-conversion mixer and power amplifiers are revealed. With a 3-bit delta sigma modulator, an IEEE 802.11a based transmitter is simulated. Results show that the error vector magnitude of this transmitter achieves -20.74dB for 64-QAM. With up to +10% gain imbalance for the most significant bit, the transmitter's accuracy degrades 1.5dB.","PeriodicalId":431569,"journal":{"name":"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/COMCAS.2015.7360437","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
An orthogonal frequency division multiplexing transmitter based on multi-bit delta sigma modulator with switch mode power amplifiers is presented. Multi-bit up-conversion mixer and power amplifiers are revealed. With a 3-bit delta sigma modulator, an IEEE 802.11a based transmitter is simulated. Results show that the error vector magnitude of this transmitter achieves -20.74dB for 64-QAM. With up to +10% gain imbalance for the most significant bit, the transmitter's accuracy degrades 1.5dB.
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