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Interference neutralization method based on power dynamic allocation

A technology of dynamic allocation and power, applied in the field of communication, can solve the problems of reducing achievable data rate, high power overhead, reducing signal transmission power, etc., to achieve the effect of rational utilization, maximization of signal-to-interference-noise ratio, and easy implementation.

Active Publication Date: 2016-06-01
CERTUS NETWORK TECHNANJING
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Problems solved by technology

[0008] The purpose of the present invention is to provide an interference neutralization method based on dynamic power allocation, which aims to solve the problem that the power overhead of the current complete interference neutralization method is too large, resulting in a reduction in the power used for desired signal transmission, thereby reducing the achievable data rate The problem

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  • Interference neutralization method based on power dynamic allocation

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[0039] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0041] refer to figure 2 , the system model used in the present invention is a hybrid cellular network downlink communication system, the system includes 2 base stations, 2 users, and all base stations and users are equipped with 2 antennas. The micro cell adopts an open access mode. The signal transmitted from the macro base station to the macro user will interfere with the signal of the micro base station and the micro user. Since the coverage of the micro base station is limited, the i...

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Abstract

The invention discloses an interference neutralization method based on power dynamic allocation, which mainly solves the problem in the existing complete interference neutralization technology that the power overhead is too large so that the expected signal transmission power is reduced and the data rate is reduced. The technical scheme is that the method comprises the following steps: step 1, determining an optimum interference neutralization power coefficient by an interfered transmitter according to the strength of an expected signal and an interference signal and a spatial correlation of the expected signal and the interference signal; and step 2, constructing an interference neutralization signal by the interfered transmitter according to the optimum interference neutralization power coefficient, and transmitting the interference neutralization signal to a receiver, so as to partially or completely eliminate interferences, and make the interfered receiver recover expected data. The interference neutralization method based on the power dynamic allocation provided by the invention has the advantages that reasonable allocation can be performed on transmitting power of the interfered transmitter and the signal to interference plus noise ratio of the interfered receiver can be maximized, and the interference neutralization method can be used for data transmission.

Description

technical field [0001] The invention belongs to the field of communication technology, and in particular relates to an interference neutralization method based on dynamic power distribution, which can be used to realize reasonable utilization of transmission power in data transmission, partially eliminate interference and maximize the signal-to-interference-noise ratio of a receiver. Background technique [0002] With the rapid development of wireless communication technology, people's demand for data transmission continues to increase, and a large number of users and data connections will exist in a limited network space. On the one hand, people strive to find efficient resource utilization methods, on the other hand, they also realize that interference has become an important factor restricting network capacity. Therefore, the importance of interference management techniques has become increasingly prominent. [0003] The existing interference management methods include z...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/08H04W72/54
CPCH04W72/0473H04W72/541Y02D30/70
Inventor 李钊甄露肖丽媛丁汉清赵林靖
Owner CERTUS NETWORK TECHNANJING
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