Method for restraining same frequency interference in wireless communication system

A co-channel interference and wireless communication technology, applied in the transmission system, transmission noise suppression, electrical components, etc., can solve problems such as increased error rate, decreased effect, and failure of the communication system to operate normally.

Inactive Publication Date: 2007-02-21
INSTITUTE FOR INFORMATION INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the interference source signal is too strong, the effect of the above means will be greatly reduced,

Method used

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  • Method for restraining same frequency interference in wireless communication system
  • Method for restraining same frequency interference in wireless communication system
  • Method for restraining same frequency interference in wireless communication system

Examples

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Embodiment Construction

[0026] The present invention can be applied in the wireless communication system using the preamble synchronization signal, and figure 1 It is a system schematic diagram of a preferred embodiment of the present invention, wherein each communication individual in the system is configured with a unique preamble that is orthogonal to each other, so that the communication partner can use the preamble to complete communication with the Synchronization of physical layer signals of communicating individuals. As shown in the figure, the wireless transmission system, that is, the base station 10, transmits a main signal 101 to a wireless receiving system, that is, the mobile phone 20, and the interference source in this example is another base station 30, the base station The interference signal 301 of the same frequency transmitted by 30 and another reflected interference signal 302 are also received by the mobile phone 20. Since the main signal 101 and the interference signals 301 an...

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Abstract

The method comprises: the orthogonal state between the main signals desired by radio receiving system and the preamble of interference signals in same frequency is used to calculated the same frequency signals power strength in order to discriminate those same frequency signals and further to receive the main signals. The radio receiving system can also figures out the relative bearing information and transmits it to the radio transmitting system; the radio transmitting system can enhance the main signal strength and makes the interference source to reduce the strength of interference signal strength.

Description

technical field [0001] The invention relates to a method for suppressing co-channel interference, especially a method for suppressing co-channel interference in a wireless communication system using a preamble. Background technique [0002] The communication system has occupied a very important place in the human life at this stage. All mobile phones, networks, or various wired and wireless communication systems are inseparable from life, especially wireless communication systems, such as: IEEE 802.16, UWB... etc. are one of the cores of future development. In the above-mentioned non-communication system, co-channel interference is known to be a very important issue that affects reception and needs to be solved urgently. [0003] Co-channel interference means that when the receiver receives a specific frequency signal transmitted by the transmitter, it also receives the same frequency signal transmitted by the adjacent interference source. Since the two frequencies are the ...

Claims

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Application Information

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IPC IPC(8): H04B1/10H04B15/00
Inventor 李永定
Owner INSTITUTE FOR INFORMATION INDUSTRY
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