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A gsm-r base station with high interference signal suppression

A GSM-R, interference signal technology, applied in the field of GSM-R base stations, can solve the problems of inability to receive signals normally, receiver amplifier saturation, etc., to reduce transceiver interference, compress receiving bandwidth, and suppress out-of-band large signal interference. Effect

Active Publication Date: 2016-08-10
NANJING TICOM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3) Blocking interference: receiving a strong signal at the out-of-band edge, which saturates the receiver amplifier and cannot receive the signal normally

Method used

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  • A gsm-r base station with high interference signal suppression
  • A gsm-r base station with high interference signal suppression
  • A gsm-r base station with high interference signal suppression

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with accompanying drawing.

[0026] The dual bandpass filter structure is as image 3 As shown, it includes the high-frequency signal insertion port RFin and the radio frequency signal port RFout. When the base station is connected with dual bandpass filters, the structure is as follows figure 1 shown. The high-frequency signal insertion port RFin is N-K radio head, connected to 1 / 2 feeder, and connected to the GSM-R base station, and the radio frequency signal port RFout is L29(7 / 8)-K radio head, connected to 7 / 8 feeder, and connected to the antenna.

[0027] The dual bandpass GSM-R coupler structure is as follows Figure 4 As shown, it includes the high-frequency signal insertion port RFin, the radio frequency signal port RFout and the coupling port Couple. When the base station is connected to the dual bandpass GSM-R coupler, the structure is as follows figure 2 shown. . The high-frequency s...

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Abstract

The invention provides a GSM-R base station with high suppression of interference signals, including a base transceiver station BTS and its antenna, a pair of double band-pass filters or a pair of double band-pass filters are installed between the base transceiver station BTS and the antenna GSM-R coupler, described double-bandpass filter or double-bandpass GSM-R coupler comprises high-frequency signal insertion port RFin and radio-frequency signal port RFout, and high-frequency signal insertion port RFin is N-K radio frequency head, connects The 1 / 2 feeder is connected to the GSM‑R base station, and the RF signal port RFout is the L29 (7 / 8)‑K radio head, which is connected to the 7 / 8 feeder and connected to the antenna. The present invention compresses the receiving bandwidth of the GSM-R base station through the double-band-pass filter or the double-band-pass GSM-R coupler, reduces the floor noise level, suppresses the out-of-band large signal interference, and prevents the transceiver of the GSM-R base station Blocking, and effectively reduces intermodulation interference to GSM‑R base station transceivers.

Description

technical field [0001] The invention relates to the field of communication systems, in particular to a GSM-R base station with high suppression of interference signals. Background technique [0002] With the continuous increase of communication requirements, wireless communication networks are almost everywhere, and frequency resources are becoming increasingly tight, and the resulting mutual interference between wireless systems is inevitable. The working frequency band of GSM-R is uplink 885-889MHz; downlink 930-934MHz; adjacent to China Telecom, China Mobile and China Unicom, see the following table for details: [0003] [0004] GSM-R base station radio frequency interference mainly includes the following types: [0005] 1) Uplink interference: According to Table 1, the uplink frequency band of the GSM-R base station is susceptible to the downlink interference of China Telecom's CDMA800 and the second harmonic interference of China Unicom's DCS1800, resulting in a de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/10H04W88/08
Inventor 倪小龙吉荣新
Owner NANJING TICOM TECH
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