Signal processing method and system for heterogeneous network multi-cell system
A heterogeneous network and signal processing technology, applied in the transmission system, radio transmission system, wireless communication, etc., to achieve the effect of simplifying the processing process, reducing the influence of noise signals, and increasing the signal-to-noise ratio
Active Publication Date: 2020-01-17
LEADCORE TECH +1
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[0003] The present invention provides a signal processing method and system of a heterogeneous network multi-cell system, which are used to solve the problem of removing interference and noise in the heterogeneous network multi-cell system
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[0042] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0043] Figure 1 to Figure 4 A method flowchart of an embodiment of a signal processing method for a heterogeneous network multi-cell system according to the present invention is shown. A signal processing method of a heterogeneous network multi-cell system is mainly performed by the heterogeneous network multi-cell system. The heterogeneous net...
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The invention provides a signal processing method and a system for a heterogeneous network multi-cell system. The heterogeneous network multi-cell system signal processing method comprises steps: the inter-homogeneous cell interference component at a Pico cell user receiving end side is zero, a Pico cell base station-side pre-coding vector is set in a maximum ratio transmission mode, and a Pico cell user receiving end-side beam forming vector and a Pico cell base station-side pre-coding vector are obtained; according to the Pico cell user receiving end-side beam forming vector, linear space for a Macro cell base station-side pre-coding vector is obtained; a Macro cell user receiving end-side beam forming vector and a Macro cell base station-side pre-coding vector are obtained through processing; and the above vectors are configured in a preset receiving end signal model, and a receiving end signal estimation value is obtained. The useful channel gains are maximized, influences from user receiving end noise signals are reduced, and while the noise signal influences are reduced, multilevel interference in the heterogeneous network multi-cell system can be eliminated.
Description
technical field [0001] The invention relates to the field of system signal processing, in particular to a signal processing method and system of a heterogeneous network multi-cell system. Background technique [0002] At present, in the LTE (long Term Evolution) heterogeneous network (HetNet) multi-cell system, multiple Pico (pico base station) cells are superimposed in the Macro (macro base station) cell, and the system spectrum efficiency can be greatly improved through frequency reuse. It is a key technical direction for the evolution of 4G and 5G technologies. However, due to the superposition of multi-level cells, serious interference problems will be generated between cell users. This kind of interference has hierarchical sources, including heterogeneous inter-cell interference, homogeneous inter-cell interference, and multi-user interference. In existing schemes, for inter-cell interference, one way is to treat it as a part of white noise and use MMSE and other meth...
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IPC IPC(8): H04W24/02H04B7/0456
CPCH04B7/0408H04B7/0456H04W24/02
Inventor 莫建林
Owner LEADCORE TECH