Method and device for eliminating interference

A technology for eliminating interference and interference sources, which is applied in the field of communication, and can solve problems such as the inability of interference elimination methods to meet requirements

Inactive Publication Date: 2013-10-30
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the interference elimination method in the related art cannot meet the demand, th...

Method used

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  • Method and device for eliminating interference

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Figure 7 It is a schematic diagram of the influence of high-order harmonics of the interference source on the radio frequency working frequency band after changing the operating frequency of the interference source according to the preferred embodiment 1 of the present invention, as shown in Figure 7 As shown, assuming that the interference source is the CLK signal of the LCD, the optional operating range of its frequency is 35MHz to 40MHz, and its high-order harmonics interfere in the RF operating frequency band. For example, the CLK signal can be set to work at 38.4MHz (f1) and 35.5Mhz (f2). If the CLK signal works at 38.4MHz, the 23(x) multiplier has interference at 883.2MHz(f1*x), the 41(y) multiplier has interference at 1574.4Mhz(f1*y), and the 51(z) multiplier has interference at 883.2MHz(f1*x). There is interference at 1958.45MHz (f1*z); if the CLK signal works at 35.5MHz (f2), there is interference at 887MHz for 25(a) multiplication, interference at 1575Mhz f...

Embodiment 2

[0050] Figure 8 It is a flow chart of adjusting the interference working frequency point when the single radio frequency working frequency point is preferred according to the second preferred embodiment of the present invention. If the communication terminal works at a single working frequency point, then as Figure 8 As shown, the process of adjusting the interference working frequency includes the following steps:

[0051] Step S802, start to establish communication.

[0052] Step S804, the communication terminal obtains the communication working frequency through the protocol.

[0053] Step S806, comparing the operating frequency of the radio frequency with the multiplied frequency of CLK of the LCD. If the working frequency at this time is 883.2Mhz, and the CLK of the LCD is at 38.4MHz (f1), that is, the 23 times frequency of CLK is just at the working frequency (f1*x), then enter step S808; if the LCD works at this time 35.5MHz (f2), go to step S810.

[0054] In step...

Embodiment 3

[0057] Figure 9 It is the flow chart of the interference working frequency point adjustment when the radio frequency working frequency point jumps according to the third preferred embodiment of the present invention. If the radio frequency working frequency point of the communication terminal often jumps, then as Figure 9 As shown, the process of adjusting the interference working frequency includes the following steps:

[0058] Step S902, start to establish communication.

[0059] Step S904, the communication terminal obtains the communication working frequency through the protocol.

[0060] Step S906, comparing the operating frequency of the radio frequency with the multiplied frequency of CLK of the LCD. If the working frequency at this time is 883.2Mhz, and the CLK of the LCD is at 38.4MHz (f1), that is, the 23 times frequency of CLK is just at the working frequency (f1*x), then enter step S908; if the LCD works at this time 35.5MHz (f2), no processing is required, an...

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Abstract

The invention discloses a method and device for eliminating interference. The method comprises: judging whether frequency multiplication of interference source operating frequency causes interference on operating frequency of a system; and under the condition that the frequency multiplication of the interference source operating frequency causes interference on the operating frequency of the system, adjusting the interference source operating frequency. Through the method and the device, the problem that in correlation techniques, interference elimination methods cannot meet requirements is solved, and thus effect that interference elimination effect is better and cost is lower is achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method and device for eliminating interference. Background technique [0002] In wireless communication equipment, the system often receives interference signals from itself, especially in mobile terminals, the speed of baseband signals is getting higher and higher, and its high-order harmonics interfere more and more with radio frequency modules, especially antennas. For example, with the progress of liquid crystal display (LCD for short) display technology, the system interface has progressed from serial port and CPU interface to RGB, LVDS and MIPI interfaces. With the increase of screen resolution, LCD interface The clock frequency is constantly increasing, and the high-order harmonics of the clock often fall within the communication bandwidth range, resulting in interference. [0003] figure 1 is a schematic diagram of the higher harmonics of the interference source and...

Claims

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Application Information

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IPC IPC(8): H04W72/08H04W72/12
CPCH04W16/10H04W72/082H04B1/10H04W16/14H04W72/541
Inventor 佘海波梁攀峰刘凤鹏孙钦利郭帅
Owner ZTE CORP
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