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Precoding method and precoding system for eliminating interference

A technology for eliminating interference and precoding, applied in the field of communication network

Active Publication Date: 2014-11-19
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is how to improve the computing speed of the precoding scheme and reduce the computational complexity in the precoding scheme

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  • Precoding method and precoding system for eliminating interference
  • Precoding method and precoding system for eliminating interference
  • Precoding method and precoding system for eliminating interference

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Embodiment Construction

[0020] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0021] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0022] figure 1 A schematic diagram of an interference relationship between a macro base station and a micro base station is shown according to an embodiment of the present invention.

[0023] Such as figur...

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Abstract

The invention relates to a precoding method and a precoding system for eliminating interference. The precoding method comprises a step S1 of detecting values of interference of multiple micro base stations on each user among multiple users of a macro base station, and clustering the multiple micro base stations with values of interference on any user of the multiple users larger than a preset value, in order to form a micro base station group, a step S2 of eliminating inter-user interference through zero-forcing channel inversion conversion and QR decomposition, and a step S3 of eliminating inter-user interference in the micro base station group through lattice reduction conversion and zero-forcing channel inversion conversion. With the technical scheme provided by the invention, the speed of precoding operation is accelerated, the precoding effect is improved, the overall complexity of precoding operation is reduced, and an interference elimination effect is improved.

Description

technical field [0001] The present invention relates to the technical field of communication networks, in particular, to a precoding method for eliminating interference and a precoding system for eliminating interference. Background technique [0002] In complex networks, a two-tier network composed of macro base stations and micro base stations has become the most promising spectrum sharing network architecture. In the co-channel mode, low-power micro base stations will become the mainstream of future indoor communications due to their advantages of high spectral efficiency, high indoor coverage, high network performance and energy saving. However, the system performance of a two-layer network is severely affected by the same-layer network interference and cross-layer network interference. Existing technologies such as partial frequency multiplexing and time-division multiplexing are not efficient. Multiple-Input Multiple-Output (MIMO) systems have attracted much attentio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04B7/06
Inventor 张轶凡冯志勇田玉成提亚哥晏潇
Owner BEIJING UNIV OF POSTS & TELECOMM
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