A base station frequency adjustment method and device
A frequency adjustment and frequency technology, which is applied in the field of base station frequency adjustment methods and devices, can solve the problems of high requirements on the frequency accuracy index of the local oscillator chip and the deterioration of system performance, and achieves suppression of fractional frequency spurious, phase noise is not affected, The effect of optimizing system performance
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Embodiment 1
[0060] A base station frequency adjustment method provided by an embodiment of the present invention is introduced in detail.
[0061] refer to figure 2 , shows a flow chart of a base station frequency adjustment method in an embodiment of the present invention.
[0062] Step 100, acquiring the original local oscillator frequency.
[0063] The original local oscillator frequency without adjusting the digital frequency is obtained according to the cell center frequency and the fixed intermediate frequency set in the base station.
[0064] Step 102, adjusting the original local oscillator frequency to obtain a target local oscillator frequency.
[0065] First, adjust the original local oscillator frequency to obtain the original frequency division value of the original local oscillator frequency; secondly, determine the distance between the obtained original frequency division value and the quantized frequency division value to obtain the target frequency division value; The...
Embodiment 2
[0075] A base station frequency adjustment method provided by an embodiment of the present invention is introduced in detail.
[0076] refer to image 3 , shows a schematic structural diagram of a base station frequency adjustment method in an embodiment of the present invention.
[0077] The solution architecture of the embodiment of the present invention includes four parts, namely baseband processing, radio frequency processing, local oscillator and external antenna.
[0078] refer to Figure 4 , shows a flow chart of a base station frequency adjustment method in an embodiment of the present invention.
[0079] Step 200, acquire the original local oscillator frequency.
[0080] The original local oscillator frequency without adjusting the digital frequency is obtained according to the cell center frequency and the fixed intermediate frequency set in the base station.
[0081] For example, according to f LO1 = f RF -F IF Get the original LO frequency.
[0082] Among ...
Embodiment 3
[0120] A base station frequency adjustment method provided by an embodiment of the present invention is introduced in detail.
[0121] refer to Figure 6 , shows a flow chart of a base station frequency adjustment method in an embodiment of the present invention.
[0122] Step 300, calculate the original local oscillator frequency without adjusting the digital frequency.
[0123] according to f LO1 = f RF -F IF Get the original LO frequency.
[0124] Among them, f LO1 is the original local oscillator frequency, f RF is the cell center frequency, F IF is a fixed IF frequency.
[0125] Step 302, obtaining the original frequency division value of the original local oscillator frequency.
[0126] according to Get the original divider value.
[0127] Among them, f L01 is the original local oscillator frequency, Div_vco is the frequency division value of the voltage-controlled oscillator, which is the ratio of the VCO frequency to the original local oscillator frequency...
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