Selection method and device of linear equalization algorithm

A linear equalization and algorithm technology, applied in radio transmission systems, diversity/multi-antenna systems, transmitter/receiver shaping networks, etc., can solve problems such as poor performance

Inactive Publication Date: 2021-03-05
POTEVIO INFORMATION TECH CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

Compared with MRC, the performance of IRC is significantly better than that of MRC when the interference is dominant; however, the performance of IRC is worse than that of MRC in an environment dominated by noise.

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  • Selection method and device of linear equalization algorithm
  • Selection method and device of linear equalization algorithm
  • Selection method and device of linear equalization algorithm

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Embodiment Construction

[0060] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0061] figure 1 A schematic flowchart showing a method for selecting a linear equalization algorithm provided by an embodiment of the present invention, as shown in figure 1 As shown, the selection methods include:

[0062] S101. Calculating the noise interference covariance matrix R on the pilot subcarriers according to the received multi-chann...

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Abstract

The invention provides a linear equalization algorithm selection method and device and relates to the technical field of mobile communication. The method comprises the steps of calculating a noise inference covariance matrix Ruu on pilot subcarriers according to received multiway pilot signals and channel estimation; calculating an interference over thermal IoT according to the noise inference covariance matrix Ruu; comparing the interference over thermal IoT with a preset threshold; and determining to employ an interference rejection combining algorithm or a maximal ratio combining MRC algorithm according to a comparison result. According to the selection method and device provided by the invention, through utilization of the existing noise inference covariance matrix Ruu in the IRC, therelatively precise noise variance and interference receiving power are obtained based on a method of solving a quadratic equation, the interference over thermal IoT is calculated according to the noise variance and the interference receiving power, and the detection performance not lower than that obtained through independent adoption of the IRC or MRC is obtained.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method and device for selecting a linear equalization algorithm. Background technique [0002] As the mainstream technology of 4G, LTE provides users with high-speed data transmission services. The key technologies of Orthogonal Frequency Division Multiplexing (OFDM) and Multiple-Input-Output (MIMO) in LTE system have significantly increased spectrum utilization and data transmission efficiency. The technology based on OFDM subcarrier mapping fully guarantees the orthogonality of the channels in the cell from the orthogonality of the subcarriers, and solves the serious problem of co-channel interference in the cell in the CDMA system. However, because it cannot be fully spread like CDMA, the interference between cells is difficult to eliminate. In the process of LTE standardization, three kinds of interference suppression technologies are mainly used: interferenc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L25/03H04B7/08
CPCH04B7/0857H04L25/03878H04L27/2691H04L27/2695
Inventor 王姗王栋杨世云冯绍鹏
Owner POTEVIO INFORMATION TECH CO LTD
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