{"title":"联合信道均衡和干扰抑制使用改进的常模算法","authors":"S. Goldberg, R. Iltis","doi":"10.1109/MILCOM.1988.13375","DOIUrl":null,"url":null,"abstract":"The authors propose an equalizer structure that combines the properties of both a standard decision-directed equalizer based on a minimum mean-squared error criterion and the '2-1' version constant modulus algorithm (CMA) equalizer. Analytical bit error rate results are presented for a BPSK direct-sequence spread-spectrum system that uses a finite-impulse-response adaptive equalizer based on such a scheme. Severe Frequency-selective distortion and inband tone interference are used as impairments. Preliminary results show 1-3 dB of improvement at low chip energy-to-noise ratios when using a combined CMA and recursive least-squares (RLS) cost function over the decision-directed RLS alone.<<ETX>>","PeriodicalId":66166,"journal":{"name":"军事通信技术","volume":"70 1","pages":"97-101 vol.1"},"PeriodicalIF":0.0000,"publicationDate":"1988-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Joint channel equalization and interference rejection using a modified constant modulus algorithm\",\"authors\":\"S. Goldberg, R. Iltis\",\"doi\":\"10.1109/MILCOM.1988.13375\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The authors propose an equalizer structure that combines the properties of both a standard decision-directed equalizer based on a minimum mean-squared error criterion and the '2-1' version constant modulus algorithm (CMA) equalizer. Analytical bit error rate results are presented for a BPSK direct-sequence spread-spectrum system that uses a finite-impulse-response adaptive equalizer based on such a scheme. Severe Frequency-selective distortion and inband tone interference are used as impairments. Preliminary results show 1-3 dB of improvement at low chip energy-to-noise ratios when using a combined CMA and recursive least-squares (RLS) cost function over the decision-directed RLS alone.<<ETX>>\",\"PeriodicalId\":66166,\"journal\":{\"name\":\"军事通信技术\",\"volume\":\"70 1\",\"pages\":\"97-101 vol.1\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1988-10-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"军事通信技术\",\"FirstCategoryId\":\"1093\",\"ListUrlMain\":\"https://doi.org/10.1109/MILCOM.1988.13375\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"军事通信技术","FirstCategoryId":"1093","ListUrlMain":"https://doi.org/10.1109/MILCOM.1988.13375","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
摘要
作者提出了一种均衡器结构,它结合了基于最小均方误差准则的标准决策导向均衡器和“2-1”版常模算法(CMA)均衡器的特性。给出了基于该方案的有限脉冲响应自适应均衡器的BPSK直接序列扩频系统误码率分析结果。严重的频率选择性失真和带内音干扰被用作损伤。初步结果表明,在低芯片能量噪声比下,使用CMA和递归最小二乘(RLS)成本函数的组合比单独使用决策导向最小二乘(RLS)成本函数的性能提高了1-3 dB
Joint channel equalization and interference rejection using a modified constant modulus algorithm
The authors propose an equalizer structure that combines the properties of both a standard decision-directed equalizer based on a minimum mean-squared error criterion and the '2-1' version constant modulus algorithm (CMA) equalizer. Analytical bit error rate results are presented for a BPSK direct-sequence spread-spectrum system that uses a finite-impulse-response adaptive equalizer based on such a scheme. Severe Frequency-selective distortion and inband tone interference are used as impairments. Preliminary results show 1-3 dB of improvement at low chip energy-to-noise ratios when using a combined CMA and recursive least-squares (RLS) cost function over the decision-directed RLS alone.<>