A vector signal analysis method and device
A vector signal and analysis method technology, applied in the field of vector signal analysis, can solve the problems of difficult elimination of DDS spurs, difficult control of module delay, and difficult implementation
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no. 1 example
[0047] In the first embodiment of the present invention, a vector signal analysis method, such as figure 1 shown, including the following steps:
[0048] In step S101, the vector modulation signal is subjected to A / D conversion to obtain a digital signal, and then IQ separation is performed to obtain two data streams of I and Q.
[0049] Step S102, perform decimal extraction on the data stream according to the expected extraction rate corresponding to each data stream, the expected extraction rate=clock frequency of A / D conversion / (symbol rate×number of symbol points), and output the data stream after extraction The rate is an integer multiple of the product of the symbol rate of the vector modulation signal and the number of symbol points.
[0050] Specifically, based on the expected decimation rate corresponding to the data stream, the sigma-delta modulation conversion method is used to obtain the decimation rate of the data stream in each A / D conversion clock cycle, and th...
no. 2 example
[0064] In the second embodiment of the present invention, a vector signal analysis device, such as image 3 As shown, including: A / D conversion module, IQ separation module, decimal extraction module, synchronization module, FIR shaping filter module, vector demodulation module and recovery data stream module, wherein,
[0065] The vector modulation signal passes through the A / D conversion module to form a digital signal, and then passes through the IQ separation module to obtain two data streams of I and Q;
[0066] The decimal extraction module performs decimal extraction on the data stream according to the expected extraction rate corresponding to each data stream, the expected extraction rate=clock frequency of A / D conversion / (symbol rate×number of symbol points), and output data after decimal extraction The rate of the stream is an integer multiple of the product of the symbol rate of the vector modulation signal and the number of points per symbol; the output data stream...
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