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User terminal, serving cell demodulation method, storage medium, and electronic equipment

A technology of serving cell and demodulation method, applied in the field of user terminal, electronic equipment, serving cell demodulation method and storage medium, can solve the problems of large storage space, occupation, etc., to reduce data storage space, reduce computational complexity, The effect of reducing the demodulation performance loss

Active Publication Date: 2021-05-28
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

In this process, it is necessary to store the calculation data of all interfering cell parameter combinations on all allocated REs, which takes up a large storage space

Method used

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  • User terminal, serving cell demodulation method, storage medium, and electronic equipment
  • User terminal, serving cell demodulation method, storage medium, and electronic equipment
  • User terminal, serving cell demodulation method, storage medium, and electronic equipment

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Embodiment Construction

[0040] In practical applications, the signal vector received by the user terminal on the kth resource element (Resource Element, RE) is r k , r k It can be expressed as the following formula (1):

[0041]

[0042] In formula (1), Expressed as the effective channel matrix corresponding to the serving cell corresponding to the kth RE, the effective channel matrix includes the actual channel matrix and the precoding matrix; is the signal of the serving cell corresponding to the kth RE; Expressed as the effective channel matrix corresponding to the interfering cell corresponding to the kth RE; is the signal of the interfering cell corresponding to the kth RE; n k is the noise signal corresponding to the kth RE, and n k for the variance The additive noise vector of the independent and identically distributed complex Gaussian elements of ; 1≤k≤K, K is the number of REs required to perform blind detection and estimation of interfering cells.

[0043] In an LTE system, ...

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Abstract

A user terminal, a serving cell demodulation method, storage medium, and electronic equipment, the method comprising: traversing all resource elements corresponding to a current symbol on a current physical resource block; determining the current symbol on the current physical resource block Corresponding interfering cell parameters: calculating the demodulation log likelihood ratio of the serving cell corresponding to the current symbol on the current physical resource block according to the determined interfering cell parameters. The foregoing solution can reduce the data storage space occupied by the serving cell during demodulation.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a user terminal, a demodulation method for a serving cell, a storage medium, and electronic equipment. Background technique [0002] 3GPP has introduced the Network Assisted Interference Cancellation and Suppression (NAICS) technology, and the base station sends the interfering cell parameters to the user terminal through broadcast, dedicated signaling or downlink control information (Downlink Control Information, DCI). The interfering cell parameters include a rank indicator (Rank Indicator, RI), a precoding matrix indicator (Pre-coding Matrix Indicator, PMI) and a modulation type (Modulation, MOD) of a neighboring cell. Under the condition that the parameters of the interfering cell are known, the user terminal (User Equipment, UE) performs corresponding processing operations on the received signal, which can significantly improve the performance of the communicati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04J11/00
CPCH04J11/0059H04L1/0048H04L1/0054
Inventor 余辉裴新欣王达金严伟李俊强
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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