{"title":"利用MLD提高频谱抑制传输的频率利用效率","authors":"Motoi Shirai, Sumika Omata, T. Sugiyama","doi":"10.1109/ICSPCS.2018.8631748","DOIUrl":null,"url":null,"abstract":"Spectrum suppressed transmission that increases the frequency utilization efficiency (throughput / required bandwidth) by suppressing the required bandwidth (3dB bandwidth) has been proposed to solve the frequency band exhaustion. However, in spectrum suppressed transmission, transmission quality degrades due to ISI (Inter Symbol Interference) caused by suppressing the required bandwidth to less than the Nyquist bandwidth. In this paper, in order to further improve transmission quality degradation and frequency utilization efficiency, we have proposed spectrum suppressed transmission applying MLD (Maximum Likelihood Detection) in addition to a powerful FEC (forward error correction). Then, we have quantitatively evaluated bit error rate performances and the frequency utilization efficiency in the proposed scheme by computer simulations.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Frequency Utilization Efficiency Improvement by Using MLD in Spectrum Suppressed Transmission\",\"authors\":\"Motoi Shirai, Sumika Omata, T. Sugiyama\",\"doi\":\"10.1109/ICSPCS.2018.8631748\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Spectrum suppressed transmission that increases the frequency utilization efficiency (throughput / required bandwidth) by suppressing the required bandwidth (3dB bandwidth) has been proposed to solve the frequency band exhaustion. However, in spectrum suppressed transmission, transmission quality degrades due to ISI (Inter Symbol Interference) caused by suppressing the required bandwidth to less than the Nyquist bandwidth. In this paper, in order to further improve transmission quality degradation and frequency utilization efficiency, we have proposed spectrum suppressed transmission applying MLD (Maximum Likelihood Detection) in addition to a powerful FEC (forward error correction). Then, we have quantitatively evaluated bit error rate performances and the frequency utilization efficiency in the proposed scheme by computer simulations.\",\"PeriodicalId\":179948,\"journal\":{\"name\":\"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)\",\"volume\":\"9 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2018-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICSPCS.2018.8631748\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICSPCS.2018.8631748","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Frequency Utilization Efficiency Improvement by Using MLD in Spectrum Suppressed Transmission
Spectrum suppressed transmission that increases the frequency utilization efficiency (throughput / required bandwidth) by suppressing the required bandwidth (3dB bandwidth) has been proposed to solve the frequency band exhaustion. However, in spectrum suppressed transmission, transmission quality degrades due to ISI (Inter Symbol Interference) caused by suppressing the required bandwidth to less than the Nyquist bandwidth. In this paper, in order to further improve transmission quality degradation and frequency utilization efficiency, we have proposed spectrum suppressed transmission applying MLD (Maximum Likelihood Detection) in addition to a powerful FEC (forward error correction). Then, we have quantitatively evaluated bit error rate performances and the frequency utilization efficiency in the proposed scheme by computer simulations.
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