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F-OFDM peak-to-average ratio suppression method based on three major application scenarios of 5G

A technology for peak-to-average ratio suppression and application scenarios. It is applied in the field of F-OFDM peak-to-average ratio suppression and communication equipment. It can solve problems such as excessive size, and achieve the possibility of reducing peak-to-average ratio, reducing out-of-band leakage, and reducing distortion. Effect

Inactive Publication Date: 2021-06-08
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In order to solve the problem of excessive peak-to-average ratio caused by the existing F-OFDM technology, the present invention provides a F-OFDM peak-to-average ratio suppression method based on the three major application scenarios of 5G

Method used

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  • F-OFDM peak-to-average ratio suppression method based on three major application scenarios of 5G
  • F-OFDM peak-to-average ratio suppression method based on three major application scenarios of 5G
  • F-OFDM peak-to-average ratio suppression method based on three major application scenarios of 5G

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Embodiment

[0061] Compared with the traditional F-OFDM structure, this embodiment proposes a figure 1 The shown F-OFDM peak-to-average ratio suppression method based on the three major application scenarios of 5G, the method of this embodiment adds an SLM module and an iterative limiting filter module to the traditional structure, and uses different modulation methods for different subbands and different digital filters. The function of the SLM module is to reduce the probability of the peak-to-average ratio of the sub-band data signal and reduce the probability of signal distortion. The function of the iterative limiting filter module is to limit the maximum amplitude of the signal to a pre-specified level, thereby further suppressing the signal. peak-to-average ratio. Different modulation methods and different filters are used to better adapt and meet different service requirements in consideration of the application characteristics of the three scenarios.

[0062] The known paramete...

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Abstract

The invention discloses an F-OFDM peak-to-average ratio suppression method based on three major application scenarios of 5G. The method comprises a sending end part; the sending end part comprises the following steps: modulating three sub-band signals by adopting different modulation modes respectively, and then pre-mapping the modulated sub-band signals to sub-carriers with respective numbers; performing serial-to-parallel conversion on the modulated three sub-band signals to obtain multiple paths of parallel composite signals, and then performing selective mapping processing on each sub-band; adding a cyclic prefix to each sub-band signal symbol, and converting multiple paths of composite signals into one path of serial signals through parallel-serial conversion; performing filtering operation on the three sub-band signals after the parallel-serial change by adopting respective digital filters to obtain filtered three sub-band signals; respectively carrying out iterative amplitude limiting filtering processing on the filtered three sub-band signals, and then sending the signals subjected to iterative amplitude limiting filtering to a receiving end. According to the method, the peak-to-average ratio of the F-OFDM three-sub-band signal can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and specifically relates to an F-OFDM (Filtered-Orthogonal Frequency Division Multiplexing, F-OFDM) peak-to-average ratio suppression method based on three major application scenarios of 5G, and a communication device using the method for communication. Background technique [0002] With the commercialization of the fifth generation (Fifth Generation, 5G) mobile communication system, 5G will bring great changes to people's life and social development. 5G will support a variety of business scenarios, mainly including: enhanced mobile broadband (eMBB), ultra-reliable and low-latency communications (ultra Reliable & Low Latency Communications, uRLLC), large-scale machine-type communications (massive Machine Type Communications, mMTC) . The air interface waveform technology is the most basic physical layer technology of the mobile communication system, and its selection is directly re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26
CPCH04L27/2621
Inventor 宋清洋朱泽林林鹏亓伟敬
Owner CHONGQING UNIV OF POSTS & TELECOMM
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