{"title":"一种以FFT为扩频码的载波干涉OFDM新设计","authors":"K. Anwar, H. Yamamoto","doi":"10.1109/RWS.2006.1615214","DOIUrl":null,"url":null,"abstract":"In this paper, we propose a new design of efficient carrier interferometry orthogonal frequency division multiplexing (CI/OFDM) by using fast Fourier transform (FFT) as spreading codes. First, we propose the use of both positive and negative frequency of the IFFT rather than only using the positive part as in conventional method. It results new CI/OFDM waveforms which only requires a half of FFT points. Second, we replace CI spreading with FFT for achieving lower complexity because complexity of CI is similar to that of discrete Fourier transform (DFT). Our results confirm that the proposed design is capable of achieving high efficiency and low complexity while providing high performance.","PeriodicalId":244560,"journal":{"name":"2006 IEEE Radio and Wireless Symposium","volume":"241 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2006-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"29","resultStr":"{\"title\":\"A new design of carrier interferometry OFDM with FFT as spreading codes\",\"authors\":\"K. Anwar, H. Yamamoto\",\"doi\":\"10.1109/RWS.2006.1615214\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, we propose a new design of efficient carrier interferometry orthogonal frequency division multiplexing (CI/OFDM) by using fast Fourier transform (FFT) as spreading codes. First, we propose the use of both positive and negative frequency of the IFFT rather than only using the positive part as in conventional method. It results new CI/OFDM waveforms which only requires a half of FFT points. Second, we replace CI spreading with FFT for achieving lower complexity because complexity of CI is similar to that of discrete Fourier transform (DFT). Our results confirm that the proposed design is capable of achieving high efficiency and low complexity while providing high performance.\",\"PeriodicalId\":244560,\"journal\":{\"name\":\"2006 IEEE Radio and Wireless Symposium\",\"volume\":\"241 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2006-04-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"29\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2006 IEEE Radio and Wireless Symposium\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/RWS.2006.1615214\",\"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.2006.1615214","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A new design of carrier interferometry OFDM with FFT as spreading codes
In this paper, we propose a new design of efficient carrier interferometry orthogonal frequency division multiplexing (CI/OFDM) by using fast Fourier transform (FFT) as spreading codes. First, we propose the use of both positive and negative frequency of the IFFT rather than only using the positive part as in conventional method. It results new CI/OFDM waveforms which only requires a half of FFT points. Second, we replace CI spreading with FFT for achieving lower complexity because complexity of CI is similar to that of discrete Fourier transform (DFT). Our results confirm that the proposed design is capable of achieving high efficiency and low complexity while providing high performance.