Indoor distributed antenna system and multi-mode communication method

Abstract

The invention provides an indoor distributed antenna system and a multi-mode communication method. The system comprises a radio-frequency signal processing module, a circular polarization radiation module and a mono-polarization radiation module. The circular polarization radiation module comprises a first radiation caliber and a second radiation caliber which are the same and mutually perpendicular. The radio-frequency signal processing module is used for generating a first radio-frequency signal, a second radio-frequency signal and a third radio-frequency signal, wherein the first radio-frequency signal and the second radio-frequency signal are equal in amplitude and frequency, have a 90-degree phase difference and are transmitted to the circular polarization radiation module, and the third radio-frequency signal is transmitted to the mono-polarization radiation module. The circular polarization radiation module is used for receiving the first radio-frequency signal and transmitting a first radiation signal by means of the first radiation caliber, and receiving the second radio-frequency signal and transmitting a second radiation signal by means of the second radiation caliber. The mono-polarization radiation module is used for receiving the third radio-frequency signal and transmitting a third radiation signal. By the aid of the indoor distributed antenna system and the multi-mode communication method, mobile terminals supporting different communication system application modes in an indoor space can be guaranteed to reliably communicate.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communication, and in particular to an indoor distributed antenna system and a multi-mode communication method. Background technique [0002] Since the proportion of indoor communication services is increasing day by day, in order to increase the system capacity, the multiple-input multiple-output (Multiple-Input Multiple-Out-put, MIMO) technology is applied in the indoor mobile communication system. [0003] The current indoor distributed antenna system supports a variety of mobile communication systems, taking Global System of Mobile Communication (GSM) and Long Term Evolution (LTE) systems as examples: when the LTE system applies MIMO technology and the GSM system When MIMO technology is not applied, in order to meet the needs of mobile terminals supporting different communication systems, the indoor distributed antenna system mainly receives two radio frequency signals throug...

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Problems solved by technology

[0004] However, due to the limitations of dual-polarized antenna technology and structural technology, the coverage of the two radiation signals sent by the horizontally polarized radiation module and the vertically polarized radiation module is inconsistent, and the radiation frequency bands are quite different, resulting in the support of mobile LTE systems. The diversity reception effect of the terminal is poor, the reception performance of the mobile terminal supporting the GSM system is unstable, and the existing indoor distributed antenna system has certain limitations

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