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High performance channel simulator automatic control receiver and verification device thereof

A simulator and high-performance technology, applied in the field of communication, can solve the problems of changing the power distribution of the communication link, the receiver cannot automatically judge and identify the received signal size, etc., and achieve the effects of large dynamics, good marketability, and easy use

Active Publication Date: 2017-06-20
创远信科(上海)技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that the general channel simulator has a preset value process, and the receiver cannot automatically judge and identify the size of the received signal, and adaptively change the power allocation of the communication link

Method used

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  • High performance channel simulator automatic control receiver and verification device thereof
  • High performance channel simulator automatic control receiver and verification device thereof
  • High performance channel simulator automatic control receiver and verification device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] see figure 2 , a kind of high-performance channel emulator automatic control receiver of the present invention, comprises main control unit, is characterized in that:

[0034] It also includes a radio frequency variable attenuation unit, a broadband coupling unit, a radio frequency demodulation unit, a detection unit, an operational amplifier unit, a local oscillator unit, and a main control unit;

[0035] The radio frequency variable attenuation unit is used to distribute the power of the broadband radio frequency signal received from the base station or terminal, and then send it to the broadband coupling unit; see image 3 , the radio frequency variable attenuation unit described in this example includes three radio frequency variable attenuators and three radio frequency amplifiers, each radio frequency variable attenuator is connected in series with one of the radio frequency amplifiers to form an attenuation unit, and the three attenuation units in series again....

Embodiment 2

[0050] This example is basically the same as Example 1, except that the radio frequency variable attenuation unit is slightly adjusted, see Figure 4 In this example, three RF variable attenuators and four RF amplifiers are used. The first RF variable attenuator is connected in series with the second RF variable attenuator, the first RF amplifier, the second RF amplifier, and the third RF variable attenuator. A RF variable attenuator, a fourth RF amplifier, and a fifth RF amplifier.

[0051] Of course, in order to prevent some large signals from damaging the receiving circuit, the position of the first RF variable attenuator remains unchanged, and the positions of the subsequent RF variable attenuators and RF amplifiers can be changed, that is, the first RF variable attenuator in turn The first radio frequency amplifier, the second radio frequency amplifier, the second radio frequency variable attenuator, the fourth radio frequency amplifier, the fifth radio frequency amplifie...

Embodiment 3

[0059] see Figure 5 , in order to prove the effect of the present invention, below the circuit of the present invention design is verified, and concrete way is as follows:

[0060] Firstly, calibrate the best power value corresponding to the best state of the channel emulator receiver. Take the optimal power value of 0dBm at 1GHz as an example. Use the signal source to simulate the signal received by the channel simulator receiver, and use the spectrum analyzer to check the input signal of the RF demodulation unit, that is, the output signal of the broadband coupling unit; connect the output port of the signal source to the input port of the channel simulator receiver, The output port of the broadband coupling unit of the channel simulator receiver is connected to the input port of the spectrum analyzer, and the detection unit is removed.

[0061] Then set the output frequency of the signal source to 1GHz, the power to -60dBm, and the modulation bandwidth to 20MHz. Set the...

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Abstract

The invention relates to the technical field of communication, and particularly relates to a high performance channel simulator automatic control receiver and a verification device thereof. The receiver is characterized in that the receiver comprises a radio frequency variable attenuating unit, a broadband coupling unit, a radio frequency demodulation unit, a detection unit, an operational amplifier unit, a local oscillation unit and a main control unit; a storage unit is arranged in the main control unit which is used for storing the optimum power value corresponding to each frequency and controlling the detection unit and the local oscillation unit. Compared with the prior art, the receiver provided by the invention has the advantages that the receiver can automatically adjust the channel level without presetting receiving power; and the receiver is stable in the best working condition, and has the characteristics of wide frequency band, large dynamic state, automation, easy use, high accuracy and excellent marketing.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a high-performance channel simulator automatic control receiver and a verification device thereof. Background technique [0002] With the improvement of human's demand for communication and the support of the country for the communication industry, wireless communication technology has developed rapidly. The wireless communication channel environment is complex, and there are characteristics such as multipath fading, delay spread, and Doppler fading that affect communication quality. The increasingly complex wireless communication environment brings difficulties to the design and development of high-quality wireless communication systems. In the development process of the communication system, it is necessary to fully consider the unfavorable factors of the wireless channel. The channel simulator has a better approximate simulation effect on the wireless channel. Using th...

Claims

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Application Information

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IPC IPC(8): H04B17/21H04B17/00H04B17/327H04B17/391
CPCH04B17/0087H04B17/21H04B17/327H04B17/391H04B17/3911
Inventor 解建红蒋佳佳
Owner 创远信科(上海)技术股份有限公司
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