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CONSTANT ENVELOPE SIGNAL GENERATION METHOD AND DEVICE, AND RECEIVING METHOD AND DEVICE FOR DOUBLE-FREQUENCY FOUR-COMPONENT SPREAD SPECTRUM SIGNALS
CONSTANT ENVELOPE SIGNAL GENERATION METHOD AND DEVICE, AND RECEIVING METHOD AND DEVICE FOR DOUBLE-FREQUENCY FOUR-COMPONENT SPREAD SPECTRUM SIGNALS
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机译:恒定包络信号生成方法和装置,以及双频四分量扩频信号的接收方法和装置
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摘要
The application relates to a generating method and device, receiving method and device for a dual-frequency constant envelope multiplexed signal with four spreading signals. According to the method, the four baseband spreading signals s 1 (t), s 2 (t), s 3 (t), s 4 (t) can be modulated to a frequency f 1 and a frequency f 2 respectively, so as to generate the constant envelope multiplexed signal on a radio carrier frequency f P = (f 1 + f 2 )/2, where the signals s 1 (t) and s 2 (t) are modulated on the frequency f 1 with carrier phases orthogonal to each other, the signals s 3 (t) and s 4 (t) are modulated on the frequency f 2 with carrier phases orthogonal to each other, f 1 f 2 . The method comprises: determining a power ratio allocated to the four baseband spreading signals s 1 (t), s 2 (t), s 3 (t), s 4 (t) in the constant envelope multiplexed signal; storing an additional phase lookup table, wherein the table includes additional phases of an in-phase baseband component I(t) and a quadrature-phase baseband component Q(t) of the constant envelope multiplexed signal; obtaining an additional phase ¸ of a segment of the current time by looking up the additional phase lookup table; and generating an in-phase baseband component I(t) and a quadrature-phase baseband component Q(t) of the constant envelope multiplexed signal, and generating the constant envelope multiplexed signal S RF ( t ) based on the obtained additional phase ¸.
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机译:本申请涉及具有四个扩频信号的双频恒定包络复用信号的产生方法,装置,接收方法和装置。根据该方法,可以将四个基带扩展信号s 1(t),s 2(t),s 3(t),s 4(t)分别调制为频率f 1和频率f 2,从而产生在无线电载波频率f P =(f 1 + f 2)/ 2上的恒定包络复用信号,其中信号s 1(t)和s 2(t)在载波相位正交的频率f 1上调制信号s 3(t)和s 4(t)彼此之间在频率f 2上被调制,载波相位彼此正交,f 1> f 2。该方法包括:确定分配给恒定包络复用信号中的四个基带扩展信号s 1(t),s 2(t),s 3(t),s 4(t)的功率比;以及存储附加相位查找表,其中该表包括恒定包络复用信号的同相基带分量I(t)和正交相基带分量Q(t)的附加相位;通过查找附加相位查找表,获得当前时间段的附加相位¸;产生恒定包络复用信号的同相基带分量I(t)和正交相基带分量Q(t),并基于所获得的附加相位phase产生恒定包络复用信号S RF(t)。
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