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非开挖封闭管线探测技术的应用
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作者 李伟 《住宅与房地产》 2017年第7X期228-228,共1页
文章对非开挖管线探测技术、各种探测技术的探测结果分析、以及在实际当中的应用进行了研究。
关键词 非开挖封闭管线探测技术 探测 结果分析
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A UNIVERSAL RECEIVER STRUCTURE FOR MDPSK SIGNALS
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作者 Han Gang Li Jiandong Chen Chen (National Key Laboratory on ISN, Xidian University, Xi’an 710071) 《Journal of Electronics(China)》 2003年第3期209-214,共6页
In this letter, a universal receiver structure with modulation classification and syn-chronization recovery for MDPSK signal is presented. The universal timing estimation algorithmfor M-ary DPSK signals is proposed to... In this letter, a universal receiver structure with modulation classification and syn-chronization recovery for MDPSK signal is presented. The universal timing estimation algorithmfor M-ary DPSK signals is proposed to estimate the best symbol timing. An identification algo-rithm based on fourth-order cumulants of signal is used to identify the modulation scheme of thesignal. Numerical results of the performance of the proposed receiver are given. 展开更多
关键词 Modulation identification SYNCHRONIZATION Blind detection
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