{"title":"MIMO-OFDM接收机中避免脉冲干扰的前导重构方法","authors":"Tsung-Yeh He, You-Hsien Lin, Tsung-Yu Tsai, Terng-Yin Hsu","doi":"10.1109/CSQRWC.2012.6294968","DOIUrl":null,"url":null,"abstract":"For wireless packet transmissions, preambles are essential to make packet synchronization function. Impulsive interference not only distorts datum, but also degrades link reliability. To deal with such distortions, a peak-to-average ratio (PAPR) detection is adopted to search impulsive positions and the convolution with the estimated time-domain response is used to recovery the distorted preambles. Simulations of a 2×2 MIMO-OFDM system with RF impairments in frequency-selective fading indicate that the SNR loss is about 2.5 dB ~ 4.6 dB to ensure synchronization working at a signal-to-impulse ratio (SIR) of -10 dB.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"66 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Preamble reconstruction method for impulsive interference avoidance in MIMO-OFDM receivers\",\"authors\":\"Tsung-Yeh He, You-Hsien Lin, Tsung-Yu Tsai, Terng-Yin Hsu\",\"doi\":\"10.1109/CSQRWC.2012.6294968\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"For wireless packet transmissions, preambles are essential to make packet synchronization function. Impulsive interference not only distorts datum, but also degrades link reliability. To deal with such distortions, a peak-to-average ratio (PAPR) detection is adopted to search impulsive positions and the convolution with the estimated time-domain response is used to recovery the distorted preambles. Simulations of a 2×2 MIMO-OFDM system with RF impairments in frequency-selective fading indicate that the SNR loss is about 2.5 dB ~ 4.6 dB to ensure synchronization working at a signal-to-impulse ratio (SIR) of -10 dB.\",\"PeriodicalId\":250360,\"journal\":{\"name\":\"CSQRWC 2012\",\"volume\":\"66 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2012-07-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"CSQRWC 2012\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/CSQRWC.2012.6294968\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"CSQRWC 2012","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CSQRWC.2012.6294968","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
在无线分组传输中，序文是实现分组同步的必要条件。脉冲干扰不仅会造成基准失真，而且会降低链路的可靠性。为了处理这种失真，采用峰值平均比(PAPR)检测来搜索脉冲位置，并使用估计的时域响应卷积来恢复失真的序言。对频率选择性衰落条件下的2×2 MIMO-OFDM系统进行了仿真，结果表明，为了保证同步工作在-10 dB的信噪比(SIR)下，系统的信噪比损失约为2.5 dB ~ 4.6 dB。
Preamble reconstruction method for impulsive interference avoidance in MIMO-OFDM receivers
For wireless packet transmissions, preambles are essential to make packet synchronization function. Impulsive interference not only distorts datum, but also degrades link reliability. To deal with such distortions, a peak-to-average ratio (PAPR) detection is adopted to search impulsive positions and the convolution with the estimated time-domain response is used to recovery the distorted preambles. Simulations of a 2×2 MIMO-OFDM system with RF impairments in frequency-selective fading indicate that the SNR loss is about 2.5 dB ~ 4.6 dB to ensure synchronization working at a signal-to-impulse ratio (SIR) of -10 dB.
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