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Anti-interference method and anti-interference device for near frequency band wireless devices

A technology of wireless devices and frequency bands, applied in wireless communication, communication between multiple stations, power management, etc., can solve the problems of increased bill of materials cost, long distance between receiving and transmitting antennas, which is not conducive to the miniaturization of user terminal products, etc. Achieve the effect of reducing BOM cost and offsetting interference

Inactive Publication Date: 2009-12-02
ZTE CORP
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Problems solved by technology

However, this solution obviously cannot completely solve the problem of mutual interference between the two wireless systems, and the long distance between the receiving and transmitting antennas is not conducive to the miniaturization of user terminal products. In addition, in order to compensate for the loss of radio frequency cables, the cost of the bill of materials of the product is corresponding increase

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  • Anti-interference method and anti-interference device for near frequency band wireless devices
  • Anti-interference method and anti-interference device for near frequency band wireless devices
  • Anti-interference method and anti-interference device for near frequency band wireless devices

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no. 2 example

[0050] In the second embodiment of the present invention, an anti-jamming device for wireless devices in similar frequency bands is roughly the same as the device described in the first embodiment, the only difference is that in the WiFi system, the first anti-jamming device for wireless devices described in the second embodiment Reference correlation signal generating unit 109 such as Figure 6 As shown, it further includes a 2.5 GHz band WiMax bandpass filter 117 for performing out-of-band filtering on the transmitted signal generated by the WiMax system to filter out out-of-band interference before inputting it into the first 180-degree phase shifter 114 .

[0051] Similarly, in the WiMax system, the second reference related signal generating unit 209 of the anti-jamming device for wireless equipment described in the second embodiment is as follows: Figure 7 As shown, it further includes a WiFi bandpass filter 217 in the 2.4GHz band, which is used to perform out-of-band fi...

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Abstract

The invention discloses an anti-interference method and an anti-interference device for near frequency band wireless devices. The method comprises the following steps: extracting datum reference signal at signal transmitting ends of two wireless devices respectively, and mutually sending the datum reference signal to the opposite wireless device; and then, after the wireless devices adjust the amplitude and phase of the external input datum reference signals, adding the external input datum reference signals and the signals of the home terminal input from an antenna. The devices comprise a datum reference signal extracting unit, a datum related signal generating unit and an offset coupling unit. Compared with the prior art, the technical proposal of the invention uses few peripheral components, reduces the BOM cost, is simple and feasible during specific implementation, thoroughly offsets the interference of the opposite wireless device on the local wireless device under the condition of not reducing the performance of the system, and is helpful for the miniaturization of a wireless device terminal product.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and device for anti-interference of wireless equipment in similar frequency bands. Background technique [0002] With the rapid development of WIMAX (World Interoperability for Microwave Access), the latest technology of the third-generation mobile communication, wireless IP (Internet Protocol, Internet Protocol) network has gradually become an indispensable part of people's daily work and life. less tools. At present, WiFi (Wireless Fidelity, Wireless Fidelity) technology has also been fully developed and has achieved wider coverage. There has been a situation where the user terminals of the WiMax wireless transceiver system and the WiFi wireless transceiver system of similar frequency bands coexist, and the user terminals use VOIP ( Voice Over Internet Protocol (Internet Protocol Telephone) provides users with voice or data services. The WiMax wireless ...

Claims

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Application Information

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IPC IPC(8): H04W52/24H04B7/26
CPCH04B1/123H04B1/406
Inventor 朱国斌
Owner ZTE CORP
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