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用中频积累法提高相关器输出信噪比 被引量:2
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作者 仰书耀 《电子学报》 EI CAS CSCD 北大核心 1993年第10期33-37,共5页
本文讨论了用中频积累法实现低信噪比直接序列扩频信号的解扩。分析了中频积累法的基本原理以及环路设计中的若干问题。最后,给出了通过卫星信道时的实验数据。
关键词 扩展频谱通信 相关器 积累 信噪比
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Frequency hopping sequences based on d-form functions 被引量:1
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作者 KE Pin-hui,ZHANG Sheng-yuan Key Laboratory of Network Security and Cryptology,Fujian Normal University,Fuzhou 350007,China 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 2010年第4期58-62,共5页
By using d-form function, a new construction of frequency hopping sequence with optimal Hamming correlation is presented in this article, which generalizes the results presented by Ding (2007). Furthermore, a new cl... By using d-form function, a new construction of frequency hopping sequence with optimal Hamming correlation is presented in this article, which generalizes the results presented by Ding (2007). Furthermore, a new class of non-power function style d-form function is proposed and an upper bound of the Hamming autocorrelation of the corresponding sequence is also derived. 展开更多
关键词 frequency hopping sequence hamming correlation d-form function spread spectrum communication
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