一种改进的互复用调制方法

发布时间：2018-05-22 09:30

  本文选题：复用 + 调制　； 参考：《测绘科学》2017年05期

【摘要】：针对传统的互复用调制方法中,8种不同的输入信号组合值与6个不同相位量之间对应关系模糊的问题,提出了三码八相的互复用调制方法。基于三码八相互复用调制方法,利用与3路输入信号相关的指数因子,推导出了新的互复用基带调制信号表达式,实现了复用调制信号的相位翻转,得到了8个不同的相位值。仿真结果显示,三码八相互复用调制方法,保证了复用调制信号的恒包络特性,解决了输入码组合值与相位量之间对应关系的模糊度问题,研究结果对于GNSS组合中的信号调制有一定的参考价值。
[Abstract]:In order to solve the problem of fuzzy correspondence between 8 different input signal combinations and 6 different phase quantities in the traditional method of mutual multiplexing modulation, a three-code and eight-phase modulation method is proposed. Based on the three code 8 multiplexing modulation method and using the exponential factor related to the three input signals, a new expression of the multiplexing baseband modulation signal is derived, and the phase flip of the multiplexed modulation signal is realized, and eight different phase values are obtained. The simulation results show that the modulation method of three codes and eight multiplexing ensures the constant envelope characteristic of the multiplexed modulation signal, and solves the ambiguity problem of the corresponding relation between the input code combination value and the phase value. The research results have some reference value for signal modulation in GNSS combination.
【作者单位】： 电子科技大学电子科学技术研究院;
【分类号】：P228.4
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本文编号：1921533