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Codebook processing method and device

A processing method and a technology of a processing device, which are applied in transmission path sub-channel allocation, digital transmission system, signaling allocation, etc., and can solve the problem of high complexity of codebook construction

Active Publication Date: 2021-09-21
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the implementation of the existing technology needs to go through a series of operations such as copying, selection, replacement, etc., resulting in a high complexity of codebook construction

Method used

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  • Codebook processing method and device
  • Codebook processing method and device

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Embodiment Construction

[0083] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0084] In order to facilitate the understanding of the technical solution of this application, first explain the relevant concepts involved in this application:

[0085] Block fading channel: In wireless communication, in the process of sending a signal from the transmitter to the receiver, if the channel coefficient remains constant in a block composed of T ...

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Abstract

Embodiments of the present application provide a codebook processing method and device. The method includes: obtaining a first matrix corresponding to the protograph, wherein the protograph includes K user nodes and N resource nodes, K is an integer greater than or equal to 1, and N is an integer greater than or equal to 1. Determine the first parameter M, perform permutation processing on the elements in the first matrix according to M, and obtain the second matrix after permutation processing, where M is used to indicate the multiple of the permutation processing, and the permutation processing is used for user nodes and resource nodes to expand. According to the permuted second matrix, a target codebook is obtained, wherein the target codebook includes codewords transmitted by the expanded user node on the expanded resource node. The permutation processing in this embodiment is to directly permute the elements in the first matrix according to the zero matrix and the processed unit matrix, which can effectively resist block fading, and thus realize the construction of a larger SCMA codebook simply and efficiently.

Description

technical field [0001] The embodiments of the present application relate to communication technologies, and in particular to a codebook processing method and device. Background technique [0002] Sparse Code Multiple Access (SCMA), as a non-orthogonal multiple access (Non-Orthogonal Multiple-Access, NOMA) technology, has the properties of high spectrum efficiency and low density extension. [0003] At present, in the related technologies of using space coupling to expand SCMA, the original model graph is usually copied, and then each user node in the original model graph is traversed, and one of the current user nodes in the original model graph is selected, and copied in all In the original model graph of , the currently selected edge is not replaced, and the other edges are replaced according to the preset rules to obtain the SCMA codebook. [0004] However, the implementation in the prior art requires a series of operations such as copying, selection, replacement, etc., ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04B7/0456
CPCH04B7/0456H04L5/0053
Inventor 司中威牟善楠戴金晟徐文波
Owner BEIJING UNIV OF POSTS & TELECOMM
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