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Method and device for processing peak-to-mean ratio

A processing method and technology of a processing device, which are applied in baseband system components, multi-frequency code systems, multi-carrier systems, etc., can solve the problems of reducing the peak-to-average ratio without bringing about negative effects, and reduce the peak-to-average ratio and reduce the Complexity, the effect of improving quality

Inactive Publication Date: 2010-11-17
ZTE CORP
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Problems solved by technology

[0012] Considering the problem that the peak-to-average ratio cannot be effectively reduced without bringing negative effects in the related art, the present invention is proposed. Therefore, the main purpose of the present invention is to provide a peak-to-average ratio processing method to solve the above-mentioned problems

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  • Method and device for processing peak-to-mean ratio
  • Method and device for processing peak-to-mean ratio

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Embodiment Construction

[0034] Functional Overview

[0035] For ease of understanding, before describing the embodiments of the present invention, a method for reserving subcarriers in the prior art is described first.

[0036] figure 1 It is a schematic diagram of the principle of the subcarrier reservation method according to the related art, such as figure 1As shown, the specific process of this method is: arrange appropriate data on the L reserved subcarriers, so that the data Ck on the L reserved subcarriers (k=i1, i2, ... iL, where, i1, i2,...iL is the index of the reserved subcarrier) The corresponding time domain signal c(n) can just suppress the peak value of the original OFDM symbol, that is, the amplitude of c(n) at the peak value of the original OFDM symbol It is exactly the difference between the amplitude of the signal at the peak point and the threshold value, and the phase is just opposite to the phase of the signal at the peak point. At present, by improving the subcarrier reserva...

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Abstract

The invention discloses a method and a device for processing peak-to-mean ratio. The method for processing peak-to-mean ratio comprises the following steps of: firstly, determining a truncation signal of a baseband signal, the peak value of which is higher than or equal to the preset peak value threshold; secondly, determining a peak extinction coefficient of the baseband signal according to the truncation signal; and thirdly, processing the baseband signal in the Newton iteration method according to the peak extinction coefficient and making the peak value of the baseband signal lower than the peak value threshold. By adopting the invention, the quality of the signal is improved, the complexity of the whole system is reduced and no negative effect occurs.

Description

technical field [0001] The present invention relates to the communication field, in particular to a peak-to-average ratio processing method and device. Background technique [0002] Orthogonal Frequency Division Multipexing (OFDM for short) technology is a multi-carrier transmission technology. This technology has been widely used in wireless communication, for example, terrestrial digital television broadcasting (Digital Video Broadcasting-Terrestral, referred to as DVB-T), digital audio broadcasting (Digital Audio Broadcasting, referred to as DAB), indoor wireless network (IEEE802 .11a / g, referred to as HIPERLAN / 2) and broadband wireless access (IEEE802.16), etc. Moreover, OFDM is also a key technology of Beyond 3G (Beyond 3G, B3G for short) mobile communication. [0003] In the specific implementation process, the OFDM system performs serial-to-parallel conversion on the high-speed data stream and distributes it to N parallel sub-channels, and the data of the N sub-chan...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L27/38H04L25/02
Inventor 卢长兵
Owner ZTE CORP
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