{"title":"一种抑制直接序列扩频系统窄带干扰的改进LSL插值器","authors":"Zhiguo Sun, Lili Guo","doi":"10.1109/CHINACOM.2006.344717","DOIUrl":null,"url":null,"abstract":"An improved interpolator based on QR-decomposition is proposed to suppress narrow-band interference (NBI) in direct-sequence spread-spectrum (DS/SS) systems. This interpolator is based on the discrepancy in the predictability between NBI and the spread spectrum signal (SS), and then uses a linear interpolation of the received signal to estimate NBI. Because of QR-decomposition operation instead of inverting the correlation matrix and a novel variable with a small dynamic range, the performances of QRD-LSL interpolators outperform ones of LSL predictors and LSL interpolators. It was shown that the QRD-LSL interpolators can obtain more 4 dB processing gain than LSL predictors and LSL predictors, and its total computational complexity scales linearly with the interpolation order.","PeriodicalId":408368,"journal":{"name":"2006 First International Conference on Communications and Networking in China","volume":"179 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":"{\"title\":\"An Improved LSL Interpolator to Suppress Narrow-Band Interference forDirect-Sequence Spread-Spectrum Systems\",\"authors\":\"Zhiguo Sun, Lili Guo\",\"doi\":\"10.1109/CHINACOM.2006.344717\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An improved interpolator based on QR-decomposition is proposed to suppress narrow-band interference (NBI) in direct-sequence spread-spectrum (DS/SS) systems. This interpolator is based on the discrepancy in the predictability between NBI and the spread spectrum signal (SS), and then uses a linear interpolation of the received signal to estimate NBI. Because of QR-decomposition operation instead of inverting the correlation matrix and a novel variable with a small dynamic range, the performances of QRD-LSL interpolators outperform ones of LSL predictors and LSL interpolators. It was shown that the QRD-LSL interpolators can obtain more 4 dB processing gain than LSL predictors and LSL predictors, and its total computational complexity scales linearly with the interpolation order.\",\"PeriodicalId\":408368,\"journal\":{\"name\":\"2006 First International Conference on Communications and Networking in China\",\"volume\":\"179 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2006-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"8\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2006 First International Conference on Communications and Networking in China\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/CHINACOM.2006.344717\",\"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 First International Conference on Communications and Networking in China","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CHINACOM.2006.344717","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
An Improved LSL Interpolator to Suppress Narrow-Band Interference forDirect-Sequence Spread-Spectrum Systems
An improved interpolator based on QR-decomposition is proposed to suppress narrow-band interference (NBI) in direct-sequence spread-spectrum (DS/SS) systems. This interpolator is based on the discrepancy in the predictability between NBI and the spread spectrum signal (SS), and then uses a linear interpolation of the received signal to estimate NBI. Because of QR-decomposition operation instead of inverting the correlation matrix and a novel variable with a small dynamic range, the performances of QRD-LSL interpolators outperform ones of LSL predictors and LSL interpolators. It was shown that the QRD-LSL interpolators can obtain more 4 dB processing gain than LSL predictors and LSL predictors, and its total computational complexity scales linearly with the interpolation order.
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