Phase smoothing processing method and device and computer readable storage medium

A technology of smooth processing and computer program, applied in FM carrier system, multi-carrier system and other directions, which can solve the problems of increased PLL and VCO design difficulty and high cost

Pending Publication Date: 2021-01-01
RDA MICROELECTRONICS BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When there is a jump in the phase signal, the PLL and VCO need to support a large frequency modulation range, which makes the design of the PLL and VCO more difficult and costly

Method used

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  • Phase smoothing processing method and device and computer readable storage medium
  • Phase smoothing processing method and device and computer readable storage medium
  • Phase smoothing processing method and device and computer readable storage medium

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0028] refer to Figure 7 , a schematic diagram of the structure of an existing polar emission system using two-point modulation technology is given.

[0029] like Figure 7 As shown, the transmitted signal is a complex signal. The complex signal is input to the in-phase component input terminal I and the quadrature component input terminal Q of the CORDIC module to obtain an amplitude signal AM and a phase signal PM. The amplitude signal AM passes through an AM upsampling module, an AM digital-to-analog converter (AM DAC), and a low-pass filter (LPF), and is input to a power amplifier (PA). The phase signal PM obtains the frequency modulation signal FM through the PM up-sampling module and the differential operation module (d / dt). The frequency modulated signal FM and carrier information are respectively input to the adder, the adder inputs the sum value to the sigma-delta modulator (SDM), the SDM inputs the result to the phase-locked loop (PLL), and outputs to the PA via ...

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PUM

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Abstract

The invention discloses a phase smoothing processing method and device and a computer readable storage medium. The phase smoothing processing method comprises the steps of: acquiring the signal amplitude of a current sampling point in a phase signal; when it is determined that the signal amplitude of the current sampling point is smaller than a preset amplitude threshold, acquiring a difference value between a phase value of the current sampling point and a phase value of a first sampling point; and when the difference between the phase value of the current sampling point and the phase value of the first sampling point is greater than a preset first threshold, updating the phase value of the current sampling point. According to the scheme, the frequency of phase signal hopping can be reduced.

Description

technical field [0001] The present invention relates to the field of wireless communication technologies, and in particular, to a phase smoothing processing method and device, and a computer-readable storage medium. Background technique [0002] Polar transmit systems are capable of converting complex signals into phase as well as amplitude signals. In polar transmit systems, changes in the phase signal enter a phase-locked loop (PLL) as a frequency-modulated signal or directly into a voltage-controlled oscillator (VCO). When there is a hop in the phase signal, the PLL and the VCO are required to support a large frequency modulation range, which in turn increases the difficulty and cost of designing the PLL and the VCO. SUMMARY OF THE INVENTION [0003] The embodiments of the present invention solve the technical problem of how to reduce the frequency of phase signal hopping. [0004] In order to solve the above technical problem, an embodiment of the present invention p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/16H04L27/12H04L27/32
CPCH04L27/16H04L27/12H04L27/32
Inventor 栾亦夫李开罗丽云
Owner RDA MICROELECTRONICS BEIJING
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