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Common station address interference elimination system and method

A technology of interference elimination and interference cancellation, applied in transmission systems, electrical components, wireless communications, etc., can solve the problems of not improving the signal-to-noise ratio of the receiver, reducing the receiving sensitivity of the receiver, etc., and achieving the effect of reducing the out-of-band suppression performance

Inactive Publication Date: 2009-06-10
PANASONIC CORP
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AI Technical Summary

Problems solved by technology

This method does not improve the signal-to-noise ratio of the receiver, and bypassing the LNA will also reduce the receiving sensitivity of the receiver

Method used

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  • Common station address interference elimination system and method
  • Common station address interference elimination system and method
  • Common station address interference elimination system and method

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Embodiment Construction

[0027] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and unnecessary details and functions for the present invention will be omitted during the description to prevent confusion to the understanding of the present invention.

[0028] Refer below figure 2 An interference cancellation system according to one embodiment of the present invention is described. figure 2 A block diagram of an interference cancellation system according to an embodiment of the present invention is shown. exist figure 2 Among them, reference numeral 100 denotes a second base station that is a co-site of an interfering base station or a neighboring cell, and a receiver 102 is a receiver in this base station (or called a first base station). It should be pointed out that figure 2 neutralize figure 1 Like parts shown are denoted by like references. and figure 1The shown prior art receiver is the same, and the receiver in the int...

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Abstract

The invention relates to a system and a method for eliminating common station site interference. The system comprises a first coupler, a transmission unit, an adjustment unit, an offset unit and a detection control unit, wherein the first coupler is used for extracting a signal transmitted by an interference base station as an interference offset signal, and coupling the interference offset signal to the transmission unit; the transmission unit is used for transmitting the interference offset signal to the adjustment unit; the adjustment unit is used for carrying out time delay, amplitude andphase adjustment of the interference offset signal to ensure that the interference offset signal and an interference signal received by a receiver from the interference base station through a wireless path have identical amplitudes and 180-degree phase difference; the offset unit is used for adding the interference offset signal adjusted by the adjustment unit to the interference signal received by the receiver from the interference base station, thereby offsetting the interference signal from the interference base station; and the detection control unit is used for controlling the adjustmentunit to carry out time delay, amplitude and phase adjustment of the interference offset signal according to the interference signal received by the receiver from the interference base station.

Description

technical field [0001] The present invention relates to an interference elimination system and method in the field of wireless communication, in particular, to an interference elimination system and method for suppressing interference in a wireless receiving device, and a radio frequency signal optical fiber transmission device used in the interference elimination system, which can suppress base station Interference signals from co-site or adjacent cell base stations. Background technique [0002] With the development of wireless communication technology, the environment of wireless communication is ubiquitous. Different wireless communication systems are distinguished according to different system standards and coexist. In addition, different standards also define usage characteristics of different systems, such as frequency range, access technology, networking mode, and so on. Take cellular mobile communication as an example, which includes GSM, PHS, CDMA, and WCDMA, TD-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/12H04W88/08
Inventor 陈康凯
Owner PANASONIC CORP
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