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Differential phase generation method and device of CPM signal, equipment and storage medium

A differential phase and signal technology, applied in the field of communication, can solve the problems that CPM signals cannot satisfy users and realize high complexity, and achieve the effect of ensuring power consumption level and reducing complexity

Active Publication Date: 2022-04-12
BEIJING SENSORO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the current differential phase generation method for CPM signals requires a complex CPM signal baseband generator, and multiplication and coordinate rotation digital calculations (Coordinate Rotation Digital Computer, Cordic) for CPM modulated signals are required, resulting in high complexity
Therefore, the existing differential phase generation method of the CPM signal cannot meet the needs of users

Method used

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  • Differential phase generation method and device of CPM signal, equipment and storage medium
  • Differential phase generation method and device of CPM signal, equipment and storage medium
  • Differential phase generation method and device of CPM signal, equipment and storage medium

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Experimental program
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Effect test

Embodiment 1

[0025] figure 1 It is a flowchart of a method for generating a differential phase of a CPM signal provided in Embodiment 1 of the present invention. This embodiment is applicable to reducing the complexity of generating a differential phase of a CPM signal. The phase generation device can be implemented, and the device can be implemented in software and / or hardware. Such as figure 1 As shown, the method specifically includes the following operations:

[0026] Step S101, generating discrete frequency pulses according to the frequency pulse function, and generating phase responses according to the discrete frequency pulses.

[0027] Specifically, continuous phase modulation (CPM) is a generalized modulation method that modulates information on the phase, and the CPM signal is defined as:

[0028]

[0029] And the equivalent low-pass signal of the CPM signal is:

[0030]

[0031] Among them, E in formula (1) and formula (2) represents the signal energy, T represents the...

Embodiment 2

[0053] figure 2 It is a flow chart of the differential phase generation method of the CPM signal provided by Embodiment 2 of the present invention. This embodiment is based on the above-mentioned embodiment, and generates the current symbol modulation value according to the differential phase pulse, the historical symbol modulation value vector and the current symbol modulation value After the differential phase of , it also includes: adding the current compliance modulation value to the historical symbol modulation value vector, so as to update the historical symbol modulation value vector. Correspondingly, the method in this embodiment specifically includes the following operations:

[0054] Step S201, generating discrete frequency pulses according to the frequency pulse function, and generating phase responses according to the discrete frequency pulses.

[0055] Optionally, generating a discrete frequency pulse according to the frequency pulse function, and generating a p...

Embodiment 3

[0065] image 3 A schematic structural diagram of a CPM signal differential phase generation device provided by Embodiment 3 of the present invention, the device includes: a phase response generation module 310 , a differential phase pulse generation module 320 and a differential phase generation module 330 .

[0066] Wherein, the phase response generation module 310 is used to generate discrete frequency pulses according to the frequency pulse function, and generate phase responses according to the discrete frequency pulses;

[0067] A differential phase pulse generation module 320, configured to generate a differential phase pulse of the CPM signal according to the phase response;

[0068] The differential phase generating module 330 is configured to generate a differential phase of the current symbol modulation value according to the differential phase pulse, the historical symbol modulation value vector, and the current symbol modulation value.

[0069] Optionally, the de...

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Abstract

The embodiment of the invention discloses a differential phase generation method and device of a CPM signal, equipment and a storage medium. Comprising the steps that discrete frequency pulses are generated according to a frequency pulse function, and phase response is generated according to the discrete frequency pulses; generating a differential phase pulse of the CPM signal according to the phase response; and generating a differential phase of the current symbol modulation value according to the differential phase pulse, the historical symbol modulation value vector and the current symbol modulation value. According to the differential phase pulse waveform and the modulation value of the CPM signal, the differential phase of the CPM signal is generated in real time, the complexity of differential phase generation of the CPM signal is greatly reduced, and the low power consumption level of CPM signal demodulation is effectively guaranteed.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a method, device, device, and storage medium for generating a differential phase of a CPM signal. Background technique [0002] Continuous Phase Modulation (Continuous Phase Modulation, CPM) signal has the characteristics of constant envelope, fast power spectrum sidelobe attenuation, flexible and diverse modulation formats, etc. It is widely used in low-power wireless transmission networks, such as Bluetooth, low-power wide area network, etc. . In order to ensure low power consumption, the low-power CPM receiver generally adopts the non-coherent differential phase demodulation method. During the demodulation, it is necessary to generate the CPM differential phase as a reference signal in real time according to the modulation value to complete signal correlation calculations. A real-time generation method of the differential phase of the CPM s...

Claims

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Application Information

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IPC IPC(8): H04L27/20H04L27/18
CPCY02D30/70
Inventor 李晓明郑波浪
Owner BEIJING SENSORO
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