{"title":"数字视频广播(DVB-T/H)高效内存FFT架构","authors":"C. Wey, Wei-Chien Tang, Shin-Yo Lin","doi":"10.1109/VDAT.2007.373250","DOIUrl":null,"url":null,"abstract":"An efficient FFT (fast Fourier transform) processor is greatly needed for real-time operation in many OFDM applications, such as xDSL, DAB, DVB-T/H, and etc. This study developed four types of efficient memory-based Radix-2 FFT architecture with a memory size of N words for N-point FFT operations. The latency can be improved from (N/2)+(N/ 2)logN, to (N/2+2)+(N/4)logN, further to [N/2+2]+(N/8) logN, at the cost of increased hardware. Results show that the developed parallel memory-based architecture can achieve a latency of 140 us with 2.425 mm2 in area for N=8192, which is well suitable for being implemented in DVB-T/H.","PeriodicalId":137915,"journal":{"name":"2007 International Symposium on VLSI Design, Automation and Test (VLSI-DAT)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2007-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"14","resultStr":"{\"title\":\"Efficient Memory-Based FFT Architectures for Digital Video Broadcasting (DVB-T/H)\",\"authors\":\"C. Wey, Wei-Chien Tang, Shin-Yo Lin\",\"doi\":\"10.1109/VDAT.2007.373250\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An efficient FFT (fast Fourier transform) processor is greatly needed for real-time operation in many OFDM applications, such as xDSL, DAB, DVB-T/H, and etc. This study developed four types of efficient memory-based Radix-2 FFT architecture with a memory size of N words for N-point FFT operations. The latency can be improved from (N/2)+(N/ 2)logN, to (N/2+2)+(N/4)logN, further to [N/2+2]+(N/8) logN, at the cost of increased hardware. Results show that the developed parallel memory-based architecture can achieve a latency of 140 us with 2.425 mm2 in area for N=8192, which is well suitable for being implemented in DVB-T/H.\",\"PeriodicalId\":137915,\"journal\":{\"name\":\"2007 International Symposium on VLSI Design, Automation and Test (VLSI-DAT)\",\"volume\":\"60 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2007-04-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"14\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2007 International Symposium on VLSI Design, Automation and Test (VLSI-DAT)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/VDAT.2007.373250\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2007 International Symposium on VLSI Design, Automation and Test (VLSI-DAT)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/VDAT.2007.373250","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Efficient Memory-Based FFT Architectures for Digital Video Broadcasting (DVB-T/H)
An efficient FFT (fast Fourier transform) processor is greatly needed for real-time operation in many OFDM applications, such as xDSL, DAB, DVB-T/H, and etc. This study developed four types of efficient memory-based Radix-2 FFT architecture with a memory size of N words for N-point FFT operations. The latency can be improved from (N/2)+(N/ 2)logN, to (N/2+2)+(N/4)logN, further to [N/2+2]+(N/8) logN, at the cost of increased hardware. Results show that the developed parallel memory-based architecture can achieve a latency of 140 us with 2.425 mm2 in area for N=8192, which is well suitable for being implemented in DVB-T/H.
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