Spectrum test method for 5GNR time division signal in key time window

Abstract

The invention discloses a frequency spectrum testing method for 5GNR time division signals in a key time window, and belongs to the technical field of testing. According to the invention, a window high-scanning signal capable of controlling time delay and width is selected as a new local oscillator high-scanning signal, so that a measured signal generates sbucket and bucket signals only when the window high-scanning signal is effective, and only a signal spectrum in a time window is displayed; a time window of a measured signal is defined by setting pulse delay and pulse width, so that a complete frequency spectrum of a time slot signal in the time window is obtained. Spectrum analysis of the time division signal in a specific time period is realized by selecting the key time window, and the method can be used for testing functions such as spectrum capture, power calculation, occupied bandwidth and adjacent channel leakage suppression ratio of the time division signal.

Description

Technical Field

[0001] The present invention belongs to the field of testing technology, and in particular relates to a spectrum testing method for a 5GNR time-division signal within a critical time window. Background Art

[0002] With the development of electronic communication technology, time-division signals are increasingly being used in network optimization in order to increase communication security and improve spectrum utilization. How to accurately analyze and test the spectrum of such time-division signals has become a difficult problem in engineering applications. The existing technical solution requires an external GPS trigger to manually judge the uplink and downlink signals based on the observation of the TDD 5G NR time domain signal. The existing technology requires a high level of professionalism from the technicians. Summary of the invention

[0003] In view of the above-mentioned technical problems existing in the prior art, the present invention proposes a spectrum testing method for 5GNR time-division signals within a critical time window, which has a reasonable design, overcomes the shortcomings of the prior art, and has good results.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A spectrum testing method for a 5GNR time division signal within a critical time window comprises the following steps:

[0006] Step 1: Select a standard signal source to generate an arbitrary signal;

[0007] Step 2: Select a periodic signal as the reference signal of the time window working mode;

[0008] Step 3: Generate a high sweep signal;

[0009] Step 4: Select a new local oscillator high-scan signal and only display the signal spectrum within the time window;

[0010] Step 5: Get the complete spectrum of the time slot signal within the time window.

[0011] Preferably, in step 3, the original high-scan signal is triggered by a reference signal to generate a new high-scan signal aligned with the reference signal.

[0012] Preferably, in step 4, a window high-scan signal capable of controlling delay and width is selected as a new local oscillator high-scan signal, so that the measured signal generates sbucket and bucket signals only when the window high-scan signal is valid, thereby only displaying the signal spectrum within the time window.

[0013] Preferably, in step 5, the time window of the measured signal is defined by setting the pulse delay and the pulse width, so as to obtain the complete frequency spectrum of the time slot signal within the time window.

[0014] Beneficial technical effects brought by the present invention:

[0015] The present invention selects a window high-scan signal with controllable delay and width as a new local oscillator high-scan signal, so that the measured signal generates sbucket and bucket signals only when the window high-scan signal is valid, thereby only displaying the signal spectrum within the time window; the time window of the measured signal is defined by setting the pulse delay and pulse width, thereby obtaining the complete spectrum of the time slot signal within the time window. The spectrum analysis of the specific time period of the time-division signal is realized by selecting the key time window, and can be used for the test of the spectrum capture, power calculation, occupied bandwidth, adjacent channel leakage suppression ratio and other functions of the time-division signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Flow chart of the method of the present invention. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] A spectrum testing method for 5GNR time division signals within a critical time window, the process is as follows: Figure 1 As shown, the specific steps include:

[0019] Step 1: Generate an arbitrary signal by selecting a standard signal source, where a certain analog interference signal is selected, and the modulation bandwidth, step, burst frequency, and frequency dwell time are set as arbitrary parameters;

[0020] Step 2: Select a periodic signal as the reference signal of the time window working mode;

[0021] Step 3: Trigger the original high-scan signal with the reference signal to generate a new high-scan signal aligned with the reference signal;

[0022] Step 4: Select a window high-scan signal with controllable delay and width as the new local oscillator high-scan signal, so that the measured signal only generates sbucket and bucket signals when the window high-scan signal is valid, thereby only displaying the signal spectrum within the time window; no matter how many data points are used for display, each point represents a certain frequency interval and a value within a certain time interval. This interval is called a process (bucket), and each bucket contains several sbuckets.

[0023] Step 5: Define the time window of the measured signal by setting the pulse delay and pulse width, so as to obtain the complete spectrum of the time slot signal within the time window.

[0024] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A spectrum testing method for 5GNR time division signals within a critical time window, characterized in that: The following steps are involved: Step 1: Select a standard signal source to generate an arbitrary signal; Step 2: Select a periodic signal as a reference signal for the time window working mode; Step 3: Generate a high sweep signal; Step 4: Select a new local oscillator high-scan signal and only display the signal spectrum within the time window; Step 5: Get the complete spectrum of the time slot signal within the time window.

2. The spectrum testing method of 5GNR time division signal in the critical time window according to claim 1 is characterized in that: In step 3, the original high-scan signal is triggered by the reference signal to generate a new high-scan signal aligned with the reference signal.

3. The spectrum testing method of 5GNR time division signal in the critical time window according to claim 1 is characterized in that: In step 4, a window high-scan signal capable of controlling delay and width is selected as a new local oscillator high-scan signal, so that the measured signal generates sbucket and bucket signals only when the window high-scan signal is valid, thereby only displaying the signal spectrum within the time window.

4. The spectrum testing method of 5GNR time division signal in the critical time window according to claim 1 is characterized in that: In step 5, the time window of the measured signal is defined by setting the pulse delay and the pulse width, so as to obtain the complete spectrum of the time slot signal in the time window.

Images