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Sequence-based signal processing method and device

A signal processing and sequence technology, applied in the communication field, can solve the problems of affecting channel estimation performance, in-band signal loss, and inability to meet the application environment of reference signal communication.

Active Publication Date: 2021-04-02
HUAWEI TECH CO LTD
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Problems solved by technology

[0005] When the uplink DMRS adopts DFT-s-OFDM waveform and uses π / 2 BPSK modulation mode, if the DMRS uses a sequence based on Gold sequence or CGS sequence, the frequency flatness of the sequence may be poor, which is not conducive to Channel estimation; if the DMRS uses the ZC sequence, it will cause the peak-to-average power ratio (PAPR) of the DMRS to be higher than the PAPR of the transmitted data, resulting in out-of-band spurious emissions of pilot signals and in-band Signal loss, which in turn affects channel estimation performance
[0006] Therefore, the sequence used by the existing DMRS cannot meet the communication application environment of using PUSCH to send reference signals

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  • Sequence-based signal processing method and device

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[0085] The technical solution in this application will be described below with reference to the accompanying drawings.

[0086] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.

[0087] In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more than two. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that words such as...

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Abstract

The invention provides a sequence-based signal processing method and device, and the method comprises the steps: determining a sequence {xn} comprising N elements, N being equal to 18, and the sequence {xn} being a sequence meeting a preset condition; generating a first signal according to the sequence {xn}; and sending the first signal. The sequence {xn} can meet the conditions of good sequence frequency domain flatness and low PAPR value, so that when the first signal is a reference signal of a signal carried by a PUSCH, the sent first signal can keep good sequence frequency domain flatnessand keep a low PAPR value at the same time, and therefore, a communication application environment for sending the reference signal can be satisfied.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular, to a sequence-based signal processing method and device. Background technique [0002] In a long term evolution (long term evolution, LTE) system, a demodulation reference signal (demodulation reference signal, DMRS) is used for channel estimation, thereby performing signal demodulation. [0003] Currently, DMRS can be obtained based on Gold sequence, computer generated sequence (CGS) or Zadoff-Chu sequence (ZC sequence). [0004] In the new radio access technology (new radio access technology, NR), it can support the physical uplink shared channel (physical uplink shared channel, PUSCH) using discrete Fourier transform orthogonal frequency division multiple access ( discrete fourier transform spread OFDM (DFT-s-OFDM) waveform, and use a binary phase shift keying (binary phase shift keying, BPSK) modulation method of π / 2. [0005] When the uplink DMRS adopts ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L5/00
CPCH04L27/262H04L5/0048H04L27/2613H04L27/2636H04L27/2614H04L5/0007H04L5/0044H04L27/2035H04J13/0062H04L25/0224H04L27/265
Inventor 刘显达龚名新曲秉玉刘鹍鹏
Owner HUAWEI TECH CO LTD
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