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Signal processing method and device

A signal processing and signal technology, applied in the field of communication, can solve problems such as signal distortion, high impact of time-domain signals, excessive peak-to-average ratio, etc., to achieve the effect of reducing peak-to-average ratio, reducing signal distortion, and avoiding impact signals

Active Publication Date: 2021-12-28
CHENGDU HUAWEI TECH
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Problems solved by technology

[0004] However, after the sending device performs delay-Doppler domain signal mapping on the data information and pilot information, and OTFS encoding operation to obtain the time domain signal, the time domain signal will have a high impact, resulting in an excessively high peak-to-average value ratio, causing signal distortion

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Embodiment Construction

[0064] The "first", "second" and so on (if any) mentioned in the embodiments of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence.

[0065] The network device involved in this application refers to a device that can communicate with a terminal device. A network device may be an access network device, a relay station or an access point. For example, the network equipment may be a base transceiver station (Base Transceiver Station, BTS) in a Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA) network, or a broadband The base station (NodeB, NB) in Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) may also be an evolved base station (Evolutional NodeB, eNB or eNodeB) in Long Term Evolution (Long Term Evolution, LTE). The network device may also be a wireless controller in a cloud radio access network (cloud radio access network, CR...

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Abstract

Embodiments of the present application provide a signal processing method and device. The signal processing method of the present application includes: the sending device obtains the pilot sequence; the sending device maps the pilot sequence to the pilot region of the delay-Doppler domain, and maps the cyclic prefix of the pilot sequence to the delay-Doppler domain The guard interval of the Le domain, the data signal is mapped to the data area of ​​the time delay-Doppler domain, and the time delay-Doppler domain signal is obtained, wherein the pilot sequence is located in all rows of the pilot area; sending The device sends a transmission signal to the receiving device, and the transmission signal is obtained by processing the delay-Doppler domain signal. The embodiment of the present application can reduce the peak-to-average ratio in the communication process, reduce signal distortion, and improve communication quality.

Description

technical field [0001] The embodiments of the present application relate to communication technologies, and in particular, to a signal processing method and device. Background technique [0002] Orthogonal Time Frequency & Space (OTFS) technology is a new two-dimensional modulation technology, the main technical feature of which is to place signals (such as constellation symbols) in the newly created delay-Doppler domain , and through the two-dimensional dual Fourier transform and the traditional time-frequency domain equivalent transformation, and finally form the common code division multiple access (code division multiple access, CDMA), time division multiple access (time division multiple access, TDMA ) or frequency division multiple access (FDMA) waveform for transmission. OTFS technology is especially suitable for high-speed mobile scenarios due to its newly expanded Doppler domain. For example: a highway scene with a speed of 120km / h, or a high-speed rail scene with...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/261H04L27/2613H04L27/262H04L27/26H04L23/02
Inventor 马千里陈磊
Owner CHENGDU HUAWEI TECH
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