System and method for relizing multimode network coexistence

Abstract

This invention relates to a system for realizing coexistence of multimode networks including a multi-mode emitter for emitting signals after channel code, symbol mapping and modulation process simultaneously or in time-sharing by a set of emission antennas and a multi-mode receiver for receiving signals from the emitter to carry out lateral hierarchical space multiplex decode process, de-modulation, symbol de-mapping and channel decode to get signals under various network modes, besides, the two devices also include a code-decode unit of empty-time, empty-frequency and empty time frequency, in which, said base station can access said user station at the same frequency simultaneously or in time-sharing and the user station can switch among different networks movably in the soft switch mode.

Description

technical field [0001] The present invention relates to the technical field of network communication, in particular to a system and method for realizing multi-mode network coexistence. Background technique [0002] In a wireless communication system, the use of multiple transmitting antennas can divide the wireless channel into multiple parallel narrowband channels, which can effectively improve the channel bit transmission rate, and the research results show that the channel capacity increases linearly with the number of antennas. Compared with receive diversity and smart antennas, MIMO (Multiple-Input Multiple-Output) systems can not only provide diversity gain and array gain, but also use SDM (Spatial Multiplexing) to increase system capacity. [0003] Since the transmitter or the receiver has a limited number of antennas, increasing the diversity gain and increasing the transmission rate are a pair of contradictions. STC (space-time code) and SFC (space-frequency code) ...

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Problems solved by technology

[0012] It is not difficult to see from the above description that in the existing technology, the demand for spectrum is relatively wide

The spectrum is precisely the scarce resource of the operator; in addition, there are several modes of user stations that need to have several frequency bands. The number of user stations is very small, because the frequency band corresponding to the mode with a small number of user stations cannot be adjusted to the mode with a large number of user stations, and the waste of spectrum resources is large

[0013] In addition, since various modes of networks occupy different frequency bands, subscriber stations cannot move and switch between heterogeneous networks in a soft handover manner.

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