Method for determining clipping threshold and communication device thereof

A communication device and threshold technology, applied in the field of communication, can solve the problems that it is difficult to achieve the clipping effect, and cannot guarantee the best performance of PAPR, ACLR and EVM, and achieve the best performance effect

Inactive Publication Date: 2015-05-13
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current typical CFR solution is to configure a fixed CFR threshold. However, in practical applications, the PAPR of network signals under various parameter configurations may be different. Using a fixed CFR threshold is difficult to achieve the best clipping effect and cannot be guaranteed. Combined metrics of PAPR, ACLR and EVM for best performance

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  • Method for determining clipping threshold and communication device thereof
  • Method for determining clipping threshold and communication device thereof
  • Method for determining clipping threshold and communication device thereof

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0039] see figure 1 , an embodiment of the method for determining the clipping threshold in the embodiment of the present invention includes:

[0040] 101. The communication device receives the configuration information sent by the network side, and determines the value combination of at least one parameter in the communication device under the current network conditions, and the at least one parameter is a preset parameter that affects the transmission of the communicati...

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Abstract

Embodiments of the invention disclose a method for determining clipping threshold and a communication device thereof, so as to determining the suitable CFR threshold values based on different parameter configurations, thereby ensuring comprehensive index of PAPR, ACLR and EVM to reach the best performance. The method comprises the following steps: receiving, by the communication device, configuration information dispatched from the a network side, determining a value combination of at least one parameter of the communication device in the existing network condition, wherein the at least one parameter is a preset parameter which affects the peak-to-average ratio of network signals sent by the communication device; then inquiring the LUT based on the value combination, so as to obtain a target threshold value matched with the value combination; and using the target threshold value for clipping the network signals sent by the communication device.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and communication equipment for determining a clipping threshold. Background technique [0002] Long Term Evolution (LTE) adopts Orthogonal Frequency Division Multiplexing (OFDM) or Single-carrier Frequency-Division Multiple Access (Single-carrier Frequency-Division Multiple Access, SC-FDMA) access technology and High-order modulation, so it has a higher peak-to-average power ratio (Peak to Average Power Ratio, PAPR). As for a power amplifier (Power Amplifier, PA), efficiency and linearity are a pair of contradictory relations. Especially when the PAPR is high, the efficiency of the PA is higher when it works close to the saturation region, but at this time there will be serious nonlinear distortion (intermodulation interference), and in order to maintain linearity, the PA needs a large power back-off, resulting in Efficiency is severely reduced. [0003] In order to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04L25/03
CPCH04L27/2623H04L27/2614
Inventor 张志伟林亚刘华斌
Owner HUAWEI TECH CO LTD
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