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Frequency offset compensation method and device suitable for 5G-NR receiver

A 5G-NR, frequency offset compensation technology, applied in the field of frequency offset compensation, can solve the problems of performance impact, resource consumption, increase power consumption, etc., to achieve the effect of high-precision frequency offset compensation and reduce resource occupation

Active Publication Date: 2021-04-02
上海擎昆信息科技有限公司
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Problems solved by technology

[0006] The CORDIC implementation method will increase the delay, and in order to achieve higher accuracy, a larger number of iterations is required, which will also increase power consumption
[0007] The second table lookup method is a better compromise solution, which can better balance storage space and power consumption. However, after the second table lookup, one more complex multiplication is required, which will also consume certain resources, and its performance will also be affected. The effect of the size of the secondary lookup table

Method used

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  • Frequency offset compensation method and device suitable for 5G-NR receiver
  • Frequency offset compensation method and device suitable for 5G-NR receiver
  • Frequency offset compensation method and device suitable for 5G-NR receiver

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Embodiment Construction

[0059] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0060] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other Presence or addition of characteristics, wholes, steps, operations, elements, components and / or collections.

[0061] In order ...

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Abstract

The invention provides a frequency offset compensation method and device suitable for a 5G-NR receiver. The device comprises a subframe-level symbol scheduler, a first register, an initial phase and frequency offset calculator, a second register, a phase accumulator, a table look-up and waveform generator, a CORDIC calibrator and a spectrum calibrator. According to the invention, high-precision frequency offset compensation can be realized on the premise of reducing resource occupation.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a frequency offset compensation method and device suitable for 5G-NR receivers. Background technique [0002] Wireless communication is divided into two categories: wireless mobile communication (Wireless Mobile Communication) and wireless local area network (LAN) communication. [0003] In wireless communication systems, it is often necessary to perform frequency offset compensation on the calculated waveform. Assuming that the signal sampling rate is fs, the frequency offset to be compensated is f0, the calculated waveform is x(k) (k=0,...n), and the signal after frequency offset compensation is: [0004] y(k)=x(k)*(cos(f0 / fs*2*pi*(k-1))+1i*sin(f0 / fs*2*pi*(k-1))), k= 1,...n. In this way, frequency offset compensation in the time domain is realized. Existing frequency offset compensation schemes include, look-up table method, CORDIC implementation method, secondary l...

Claims

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Application Information

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IPC IPC(8): H04L27/00
CPCH04L27/0014H04L2027/0026
Inventor 谭定富唐兵武传国是元吉
Owner 上海擎昆信息科技有限公司
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