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Dual-mode communication terminal capable of restraining two mode signal RF crosstalk interference and restraining method

A mode signal and communication terminal technology, applied in wireless communication, electrical components, transmission systems, etc., can solve the problems of stray emission signal interference, GSM weak signal annihilation, CDMA weak signal annihilation, etc., to ensure normal reception and reduce radio frequency Effect of cross interference and interference suppression

Inactive Publication Date: 2006-02-08
杭州斯达康通讯有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] (4) CDMA transmission, reception and idle state, the interference of spurious transmission signals to GSM reception
For (1), when the strength of the GSM transmitted signal reaching the CDMA receiver is much higher than the strength of the transmitted signal of the CDMA base station, it will cause the weak CDMA signal to be annihilated by the strong GSM signal
The interference of the GSM transmitted signal to the CDMA received signal will cause the CDMA receiver to increase the demodulation error rate of the CDMA useful weak signal, that is, the CDMA receiving sensitivity will decrease.
For (2), when the strength of the CDMA transmitted signal reaching the GSM receiver is much higher than the strength of the transmitted signal of the GSM base station, it will cause the weak GSM signal to be annihilated by the strong CDMA signal
The interference of the CDMA transmitted signal to the GSM received signal will cause the GSM receiver to increase the demodulation error rate of the GSM useful weak signal, that is, the GSM receiving sensitivity will decrease.

Method used

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  • Dual-mode communication terminal capable of restraining two mode signal RF crosstalk interference and restraining method
  • Dual-mode communication terminal capable of restraining two mode signal RF crosstalk interference and restraining method
  • Dual-mode communication terminal capable of restraining two mode signal RF crosstalk interference and restraining method

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Embodiment Construction

[0027] The dual-mode communication terminal referred to in the present invention refers to the communication terminal that is applicable to two different communication modes, and these two communication modes can be GSM, CDMA, TDMA, WCDMA, TDS-CDMA, CDMA2000, WiFi and wireless local telephone PHS mode etc. Any combination of two modes.

[0028] Please refer to figure 2 as shown, figure 2It is a schematic diagram of the internal structure of the first embodiment of the dual-mode communication terminal 1 of the present invention. The dual-mode communication terminal 1 includes a relatively independent first communication unit 20 and a second communication unit 10, and the two units 10 and 20 can be connected by a master-slave It communicates with a control system (not shown). The first communication unit 20 includes a first mode antenna 21, a first transceiver duplexer 22 for isolating transmit and receive signals, a first baseband processing module 26 for processing the fir...

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Abstract

The invention discloses a dual mode communication terminal for suppression dual mode signal RF interference which comprises a first base band processing module, a first interference control module, a second base band processing module and a second interference control module. The first interference control module comprises a first private interference compressing channel and a first non-private interference-compressing channel. The second interference control module comprises a second private interference compressing channel and a second non-private interference-compressing channel. When the first base band processing module detects that in terminal the second mode signal affecting the first mode signal's receiving, the first interference control module selects the first private interference compressing channel to compress the second mode signal. When the second base band processing module detects that in terminal the first mode signal affecting the second mode signal's receiving, the second interference control module selects the second private interference compressing channel to compress the first mode signal.

Description

【Technical field】 [0001] The invention relates to a communication terminal in a mobile communication system, in particular to a dual-mode communication terminal applicable to two different communication modes at the same time. 【Background technique】 [0002] As we all know, the three major standards that dominate today's cellular mobile communication market are TDMA (Time Division Multiple Access), CDMA (Code Division Multiple Access) and GSM (Global System for Mobile Communications) standards, collectively referred to as the second generation (2G) digital mobile communication standards , and CDMA2000, TDS-CDMA (Time Division Switching-Code Division Multiple Access) and WCDMA (Wideband Code Division Multiple Access) based on CDMA technology are collectively referred to as the third generation (3G) digital mobile communication standards. Compared with my country's leading GSM and CDMA systems, the GSM network has a high frequency band and strong signal penetration capabilitie...

Claims

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Application Information

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IPC IPC(8): H04B1/40H04B1/10H04W88/06
Inventor 霍启贤孙鹏
Owner 杭州斯达康通讯有限公司
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