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Information configuration method and device, channel estimation method and device and decoding device

A technology for information configuration and channel estimation, which is applied in digital transmission systems, baseband system components, and error prevention. It can solve problems such as low spectral efficiency, increased pilot overhead, and low system spectral efficiency.

Active Publication Date: 2019-05-31
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the requirements of different scenarios, in order to ensure the performance of channel estimation, more time-frequency resources can usually be used to place pilots, but this will lead to relatively low spectral efficiency
For example, in scenarios with high coverage requirements, the signal-to-noise ratio (SNR) of remote users is low, and many pilots are needed to ensure normal communication, but this will lead to low spectral efficiency.
[0005] In the related art, increasing the pilot overhead can improve the performance of channel estimation, but the spectral efficiency of the system is low due to the increase of the pilot overhead, and no effective solution has been proposed

Method used

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  • Information configuration method and device, channel estimation method and device and decoding device
  • Information configuration method and device, channel estimation method and device and decoding device
  • Information configuration method and device, channel estimation method and device and decoding device

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Embodiment 1

[0115] In this embodiment, an information configuration method is provided, figure 1 is a flowchart (1) of an information configuration method according to an embodiment of the present invention, such as figure 1 As shown, the process includes the following steps:

[0116] Step S102, configuring the demodulation reference signal pilot in the time-frequency resource, where the demodulation reference signal pilot occupies n symbols in the time domain m symbols, where m is an integer greater than 1, and n is equal to 0.

[0117] Through the above steps, the pilot number of the demodulation reference signal is configured as 0 in the time-frequency resource carrying the signal, which solves the problem of increasing the pilot overhead in the related art. Although the channel estimation performance can be improved, the system spectrum is caused by the increase of the pilot overhead. The efficiency is low, and no effective solution has been proposed, which reduces the pilot overhead...

Embodiment 2

[0121] In this embodiment, an information configuration method is provided, figure 2 is a flowchart (2) of an information configuration method according to an embodiment of the present invention, such as figure 2 As shown, the process includes the following steps:

[0122] Step S202, configuring demodulation reference signal pilots in time-frequency resources, wherein the demodulation reference signal pilots occupy n symbols in the time domain m symbols, where m is an integer greater than 1, and n is a positive integer.

[0123] Optionally, when n is a positive integer, the transmitter uses a convolutional code encoder or a polar code encoder.

[0124] Through the above steps, a low-overhead demodulation reference signal pilot is configured in the time-frequency resource of the bearer signal, which solves the problem of increasing the pilot overhead in the related art. Although the channel estimation performance can be improved, the increased pilot overhead causes The spec...

Embodiment 3

[0137] In this embodiment, a channel estimation method is provided, image 3 is a flowchart of a channel estimation method according to an embodiment of the present invention, such as image 3 As shown, the process includes the following steps:

[0138] Step S302, determine the first signal, the first signal is used to perform at least one of the following operations: channel estimation, detection and demodulation, wherein the transmission signal corresponding to the first signal is configured with a demodulation reference signal pilot, and the demodulation reference signal The pilot frequency occupies n symbols among the m symbols in the time domain, where m is an integer greater than 1, and n is equal to 0 or n is a positive integer.

[0139] Through the above steps, the number of demodulation reference signal pilots in the time-frequency resources is configured as 0 or low-overhead demodulation reference signal pilots are configured, which solves the problem of increasing ...

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Abstract

The invention provides information configuration, channel estimation method and device, the information configuration method comprises the steps that a demodulation reference signal pilot frequency isconfigured in a time-frequency resource, the signal is used for transmitting a signal or used for a receiving end to conduct channel estimation or detection demodulation, the demodulation reference signal pilot frequency accounts for n symbols in m symbols in a time domain, m is an integer larger than 1, and n is equal to 0. By adopting the technical scheme, the problems that in the related art,the pilot frequency overhead is increased, and although the channel estimation performance can be improved, the system spectral efficiency is low due to the fact that the pilot frequency overhead is increased are solved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to an information configuration, channel estimation method and device, and a decoding device. Background technique [0002] In the uplink transmission link, the UE transmits the demodulation reference signal using resources configured by the system for transmission of the demodulation reference signal (Demodulation Reference Signal, DMRS), and the demodulation reference signal can be used for channel estimation and / or multi-user detection at the receiving end middle. [0003] Configuring the DMRS pilot includes allocating the time-frequency position / time-frequency resource and allocating the DMRS pilot sequence / code resource to the DMRS pilot. For example, the DMRS pilot is configured in the penultimate 4th discrete Fourier transform spread spectrum orthogonal frequency division multiplexing (DFT-S-OFDM) symbol of each time slot (slot). [0004] According to the requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L1/00H04L25/02H04L25/03
CPCH04L1/00H04L5/00H04L25/02H04L25/03
Inventor 戴建强袁志锋戴博胡宇洲李卫敏陈梦竹
Owner ZTE CORP
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