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量子元胞自动机干支型交叉线及应用
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作者 张明亮 蔡理 +1 位作者 崔焕卿 汪志春 《微纳电子技术》 CAS 北大核心 2013年第9期541-545,共5页
量子元胞自动机(QCA)耦合功能阵列是一种二维的纳米尺度计算范式,可靠性较低的共面交叉线结构是QCA电路交叉互连时的薄弱环节。信号分布网络是实现交叉线功能的一种新方法,但面临元胞随机翻转干扰问题。为解决该问题,首先分析了QCA基本... 量子元胞自动机(QCA)耦合功能阵列是一种二维的纳米尺度计算范式,可靠性较低的共面交叉线结构是QCA电路交叉互连时的薄弱环节。信号分布网络是实现交叉线功能的一种新方法,但面临元胞随机翻转干扰问题。为解决该问题,首先分析了QCA基本器件逻辑功能实现机理,并提出了一种干支型交叉线。该器件可以在两路信号相遇时选通干路信号屏蔽支路信号,从而达到抑制干扰信号的目的。通过仿真实验得出了其鲁棒功能结构和时钟分配原则。然后利用干支型交叉线改进了异或门设计,仿真结果进一步验证了其逻辑功能。 展开更多
关键词 量子元胞自动机(QCA) 干支型交叉线 信号分布网络 随机翻转 异或门
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Performance of a Dual-Hop Multi-relay Cooperative Network in a Nakagami-m Fading Environment 被引量:2
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作者 Lu Jihua An Jianping Li Xiangming 《China Communications》 SCIE CSCD 2012年第4期55-62,共8页
An exact average symbol error rate analysis for the distributed dual-hop relay cooperative network with multiple relays in a Nakagami-m fading environment is presented.In the derivation of the moment generation functi... An exact average symbol error rate analysis for the distributed dual-hop relay cooperative network with multiple relays in a Nakagami-m fading environment is presented.In the derivation of the moment generation function of receiver Signal-to-Noise Ratio(SNR),the sectional integral method is used,instead of the cumulative density function method which is ordinarily used by the deduction of the outage probability of S-R-D link.The accurate symbol error rate of a dual-hop relay cooperative network is obtained with the closed-form Moment Genoration Function (MGF) expression.The correctness of the symbol error rate is verified through numerical simulations and is compared with other analytical methods.These deductions clearly show that the distributed cooperative diversity network presented has strong superiorities in overcoming severe fading and can achieve full diversity order. 展开更多
关键词 dual-hop relay cooperative communication average symbol error rate closed-form MGF AMPLIFY-AND-FORWARD Nakagami-m fading
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