Method and system for reducing peak-to-average ratio of multi-carrier frequency signal in multi-carrier frequency system
A carrier frequency signal, multi-carrier frequency technology, applied in the field of signal processing, can solve the problem of not being able to reduce the signal peak-to-average ratio well, low flexibility, etc.
Active Publication Date: 2018-10-12
TSINGHUA UNIV
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[0007] Embodiments of the present invention provide a method and system for reducing the peak-to-average ratio of multi-carrier frequency signals in a multi-carrier frequency system. Defects that cannot reduce the signal peak-to-average ratio well
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[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0021] figure 1 It is a flowchart of an embodiment of a method for reducing the peak-to-average ratio of a multi-carrier frequency signal in a multi-carrier frequency system, such as figure 1 As shown, the method includes:
[0022] S1. Sampling a multi-carrier signal transmitted in a multi-carrier system to obtain multiple sampled multi-carrier ...
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Embodiments of the invention provide a method and a system for reducing a peak-to-average ratio of a multi-carrier frequency signal in a multi-carrier frequency system. The method comprises the stepsof: sampling multi-carrier frequency signals transmitted in the multi-carrier frequency system to obtain a plurality of sampled multi-carrier frequency signals, wherein each sampled multi-carrier frequency signal comprises a plurality of sub-carrier frequency signals; and adjusting the amplitude and phase of partial sub-carrier frequency signals in each sampled multi-carrier frequency signal to reduce the peak-to-average ratio of the multi-carrier frequency signal and ensure the achievability of the multi-carrier frequency system. By improving the reserved subcarrier method and adjusting the amplitude and phase of partial sub-carrier frequency signals in each sampled multi-carrier frequency signal, the method and system provided by the embodiments of the invention is capable of more effectively reducing the peak-to-average ratio of the multi-carrier frequency signals and ensuring the achievability of the multi-carrier frequency system.
Description
technical field [0001] Embodiments of the present invention relate to the technical field of signal processing, and in particular to a method and system for reducing peak-to-average ratios of multi-carrier frequency signals in a multi-carrier frequency system. Background technique [0002] Multi-carrier frequency technology is a widely used signal transmission technology. It can modulate signals onto multiple parallel carriers to achieve high-speed signal transmission. The multi-carrier frequency technology has a high spectrum utilization rate, avoids interference between sub-carriers through the orthogonality of sub-carriers, and overcomes multipath effects. Due to the instantaneous bandwidth characteristics of the multi-carrier frequency signal, it can be regarded as a low probability of intercept waveform. The frequency diversity in multi-carrier frequency provides additional information when observing the target and improves the detection probability of the target. ...
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Login to View More IPC IPC(8): H04L27/26
CPCH04L27/2614
Inventor 刘一民黄天耀王希勤王向团
Owner TSINGHUA UNIV