Method and system for suppressing radio communication mutual interference

A communication system and wireless communication technology, applied in the field of mutual interference suppression between wireless communication systems, can solve the problems of not considering the characteristics of the interference signal, failing to eliminate the interference, and not taking any measures, so as to increase the design difficulty and reduce the accuracy. , the effect of reducing operating costs

Inactive Publication Date: 2007-10-10
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0005] (1) Mutual interference exists between the two systems. Signal and interference are relative concepts, but this invention patent completely regards one of the two communication systems as the interfering system and the other as the interfered system. Only the interfered The signal of the interfering system in the system signal is eliminated, but no measures are taken for the influence of the interfered system signal on the

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  • Method and system for suppressing radio communication mutual interference
  • Method and system for suppressing radio communication mutual interference
  • Method and system for suppressing radio communication mutual interference

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[0047] In Fig. 3, co-frequency system A 21, common antenna-3, band-pass filter-4, radio frequency amplifier-5, low-pass filter-6, A / D sampler-7 are connected in sequence, Interference canceller 8 is connected with regenerative signal processing filter one 20 and A / D sampler one 7, The output signal of the interference canceller 8 is detected by the detector 9 and sent to the network-10 for further transmission, and the output of the detector 9 is also connected to the input of the regenerator-18.

[0048] In the same-frequency system B 22, a common antenna 3, a band-pass filter 2 11, a radio frequency amplifier 2 12, a low-pass filter 13, and an A / D sampler 2 14 are connected in sequence, Interference canceller 15 is connected with regenerator one 18 and A / D sampler two 14, The output of the interference canceller 15 is sent to the network 2 17 for further transmission through the detector 16, the output of the detector 16 is also connected to the input of the regenerator...

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Abstract

The invention is used in the interference suppression in co-frequency and adjacent frequency between radio communication systems. In the invention, two systems co-existed all makes signal regeneration; the regenerated signals is sent to a regenerated signal process filter in another system through a wired media; according to requirement of its own system, the filter makes relevant filter process for the regenerated interference signals; the processed signals are re-inputted into the interference eliminator to eliminate the interference signals existed in its own system.

Description

technical field [0001] The invention relates to a method and a system for suppressing mutual interference between wireless communication systems, especially for the same-frequency or adjacent-frequency interference suppression between two coexisting wireless communication systems. Background technique [0002] Restricted by many conditions such as site resources and funds, in actual network construction, it is inevitable that base stations of different systems share the same site or are very close to each other. In my country, many CDMA base stations of China Unicom share sites with GSM base stations. When China Mobile builds a WCDMA system in the future, many base stations will share sites with existing GSM base stations. When the base stations of different systems operate together, the base stations will be affected by the signals transmitted by the terminals of different systems, and electromagnetic environment compatibility problems will occur, which will affect the qua...

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Application Information

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IPC IPC(8): H04Q7/38H04B7/26H04W16/14H04B3/23
Inventor 赵连鹏唐友喜符初生
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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