Self-adaptive method and device for eliminating interference of multiple antennae through diversity and mergence

An interference elimination and self-adaptive technology, applied in the field of mobile communications, can solve problems such as performance degradation, inability to reflect the spatial correlation characteristics of interference channels, and NI matrix calculation values ​​that cannot reflect interference, so as to reduce complexity and calculation amount, and suppress interference , the effect of robust performance
CN102480314AInactive Publication Date: 2012-05-30ZTE CORP
2 Cites 13 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZTE CORP
Publication Date
2012-05-30
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a self-adaptive method and device for eliminating interference of multiple antennae through diversity and mergence. The method comprises the following steps of: measuring noise power of each receiving antenna; judging whether the ratio of the sum of diagonal elements of an NI (Noise Index) matrix of a data carrier to be detected to an average value of the noise power of all receiving antennae is larger than a preset threshold value; if so, carrying out interference suppression and mergence detection on the data carrier to be detected; and if not, carrying out noninterference suppression and mergence detection on the data carrier to be detected. Starting from an NI estimation matrix as the most fundamental factor influencing an IRC (Interference Rejection Combining) merging algorithm, whether the currently obtained NI matrix contains more interference components is judged through the specific numerical value characteristic of the NI matrix, and then, an IRC algorithm or MRC (Mixed Radix Conversion) algorithm is selected, so that the system obtains the optimal performance.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to the technical field of mobile communication, and more specifically, to an adaptive multi-antenna diversity combining interference elimination method and device. Background technique

[0002] Wireless communication systems are always subject to various interferences. For 4th generation communication (4G) systems based on OFDMA (Orthogonal Frequency Division Multiple Access) technology, such as Wimax (Worldwide Interoperability For Microwave Access, Global Microwave Interconnection Access), LTE (Long Term Evolution, long-term evolution), always suffers from relatively serious OFDM co-channel interference (Co-Channel Interference, CCI for short). In the cellular network, due to the relationship of spectrum reuse, this kind of interference appears as neighbor cell interference. Since the interference source usually interferes with multiple data carriers, it can be considered as a broadband interference.

[0003] At present...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More