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Radius update method based on sphere decoding algorithm and device

A technology of spherical decoding algorithm and update method, which is applied in the field of radius update based on spherical decoding algorithm, and can solve problems such as increasing the amount of calculation.

Inactive Publication Date: 2017-02-22
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Since the radius adjustment of the unsearched level is ignored, the update radius used for searching is enlarged to a certain extent, which increases the amount of additional calculation

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  • Radius update method based on sphere decoding algorithm and device
  • Radius update method based on sphere decoding algorithm and device
  • Radius update method based on sphere decoding algorithm and device

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Embodiment Construction

[0037] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the examples of the invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly dictates otherwise.

[0040] It should be understood that the term "and / or" u...

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Abstract

The invention provides a radius update method based on a sphere decoding algorithm and relates to the communication field. The method comprises steps that a present searching level, a radius initial value and respective radius adjustment values corresponding to other searching levels previous to the present searching level are acquired; based on non-center chi square distribution, an expectation value of a radius adjustment value sum corresponding to the present searching level is calculated; a radius of the present searching level is calculated according to the radius initial value, the respective radius adjustment values corresponding to other searching levels previous to the present searching level and an expectation value of a radius adjustment value corresponding to a non-searched level behind the present searching level. The method is advantaged in that the update radius acquired through solution is made to be more accurate, and thereby a problem of increase of calculation amount of the sphere decoding algorithm caused by amplification of the update radius is solved.

Description

[0001] 【Technical field】 [0002] The present invention relates to the field of communication, in particular to a radius update method and device based on a sphere decoding algorithm. [0003] 【Background technique】 [0004] The generalized spatial modulation technology is one of the spatial modulation technologies, and the generalized spatial modulation technology often uses a spherical decoding detection algorithm to detect the received signal. The key to the spherical decoding detection algorithm is the selection of the update radius R in the process of searching for constellation points. If the update radius R is too small, the sphere decoding detection algorithm will not get a reasonable solution, and if the update radius R is too large, the amount of calculation will increase. The current spherical decoding detection algorithm relies on continuously reducing the radius adjustment amount at each level on the basis of the initial radius to obtain the final update radius, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04L25/03
CPCH04L25/03197H04L1/0612H04L25/03242
Inventor 蒋阳王远路洪少凯蒋瑜珂徐英杰谢云燕文洁君吴霞吴亚辉谢宗霖储夏王晓容李亦波邵明星
Owner CHONGQING UNIV
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