UNB modulation in high speed space communications
UNB modulation in high speed space communications
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DOI：
10.1117/12.773341
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发表时间：
2007-11
期刊：
影响因子：
--
通讯作者：
Lenan Wu
中科院分区：
文献类型：
--
作者：
Lenan Wu
空间无线电频谱越来越密集，频率作为一种宝贵资源的影响日益突出。本文在回顾通信工程师常用的经典方法的基础上，阐述了超窄带调制解调的理论基础和关键技术，并给出了一种超窄带传输的系统方案。该方案包括二进制相位调制扩展的统一表达式，调制解调器的实现，特别是一个重要的UNB滤波器。讨论了所提出的高数据速率UNB调制解调器在空间通信中的应用。
Radio spectra in space are close-packed more and more, so its impact of frequency as a valuable resource is increasingly prominent. Based on reviews of those classical methods a communication engineer accustomed to, this paper will interpret the theoretic foundation and key technology of the Ultra Narrow Band (UNB) modulation and demodulation, and gives a system scheme for UNB transmissions. This UNB scheme includes a unitive expression for extending of binary phase modulations, a realization of its modulator and demodulator (MODEM), and especially an important UNB filter. Applications to space communication of the proposed high data rate UNB MODEM are discussed.