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Method of optimizing tr method to suppress papr process based on accelerated approximate gradient algorithm

A gradient algorithm and algorithm technology, applied in modulation carrier systems, digital transmission systems, electrical components, etc., can solve the problem of high computational complexity, and achieve the effect of suppressing PAPR and improving BER.

Active Publication Date: 2022-04-08
NANJING UNIV OF SCI & TECH
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But the computational complexity is higher

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  • Method of optimizing tr method to suppress papr process based on accelerated approximate gradient algorithm
  • Method of optimizing tr method to suppress papr process based on accelerated approximate gradient algorithm
  • Method of optimizing tr method to suppress papr process based on accelerated approximate gradient algorithm

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[0079] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0080] combine figure 1 , the present invention provides a method for optimizing the TR method based on accelerated approximate gradient algorithm to suppress the PAPR process, comprising the following steps:

[0081] Step 1, using Fourier transform to convert the time-domain signal x of the Orthogonal Frequency Division Multiplexing OFDM system into a frequency-domain signal X;

[0082] Step 2. Obtain the mapping relationship F between the time-domain signal x and the frequency-domain signal X;

[0083] Step 3, using the carrier reservation TR method to generate a signa...

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Abstract

The invention discloses a method for suppressing the PAPR process by optimizing the TR method based on an accelerated approximate gradient algorithm, which belongs to the field of broadband communication and includes the following steps: using Fourier transform to convert the time-domain signal of the Orthogonal Frequency Division Multiplexing OFDM system into a frequency domain signal; obtain the mapping relationship F between the time domain signal and the frequency domain signal; use the carrier reservation TR method to generate a signal that suppresses PAPR, and combine the accelerated approximate gradient algorithm APGM to suppress the peak-to-average ratio PAPR. The invention suppresses the PAPR by accelerating the approximate gradient algorithm APGM to optimize the TR method, does not need cutting and filtering steps, is simple and effective, and does not need to calculate the optimal cutting threshold, and different cutting thresholds will not affect the final suppression effect. The invention can not only reduce the complexity of suppressing PAPR, realize effective suppression of PAPR, but also achieve better BER effect.

Description

technical field [0001] The invention belongs to the field of broadband communication, and particularly relates to a method for suppressing a PAPR process by optimizing a TR method based on an accelerated approximate gradient algorithm. Background technique [0002] Wireless communication technology has developed rapidly in recent years. In the 1980s, the first generation of wireless communication technology (1G) with FDMA and analog technology as the core appeared, which only provided voice services. In the early 1990s, the second generation mobile communication system (2G) with CDMA technology and TDMA technology as the core technology appeared. In the late 1990s, 2.5G communication systems represented by packet radio service (GPRS) and high-speed circuit data switching service (HSCSD) emerged, which improved the transmission rate and network capacity of wireless data. At present, the third generation mobile communication system (3G) still uses the network structure of th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/2618H04L27/2614
Inventor 杨国李杨吴文钱玉文刘奇
Owner NANJING UNIV OF SCI & TECH