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1. CN104580044 - Pre-distortion processing method and system

Office Chine
Numéro de la demande 201410850423.2
Date de la demande 29.12.2014
Numéro de publication 104580044
Date de publication 29.04.2015
Numéro de délivrance 104580044
Date de délivrance 18.12.2018
Type de publication B
CIB
H04L 25/49
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
LTRANSMISSION D'INFORMATION NUMÉRIQUE, p.ex. COMMUNICATION TÉLÉGRAPHIQUE
25Systèmes à bande de base
38Systèmes synchrones ou marche-arrêt, p.ex. pour code Baudot
40Circuits d'émission; Circuits de réception
49à conversion de code au transmetteur; à pré-distorsion; à insertion d'intervalles morts pour obtenir un spectre de fréquence désiré; à au moins trois niveaux d'amplitude
Déposants DATANG MOBILE TECHNOLOGIES CO., LTD.
大唐移动通信设备有限公司
Inventeurs XIONG JUN
熊军
WANG JINGYI
王静怡
WANG XINMIN
王新民
DUAN TAO
段滔
WANG CE
王策
XIAO PENG
肖鹏
WANG JIELI
王杰丽
Mandataires su peihua
北京润泽恒知识产权代理有限公司 11319
Titre
(EN) Pre-distortion processing method and system
(ZH) 一种预失真处理方法和系统
Abrégé
(EN)
The invention provides a pre-distortion processing method and system and aims at solving the problem that an existing pre-distortion processing application range is narrow. The pre-distortion processing method comprises the steps of obtaining bandwidth information of an input signal establishing information allocation according to cells, adopting a bandwidth signal behavior model determined based on amplifier characteristics as a pre-distortion model when the bandwidth information of the input signal confirms to a bandwidth signal rule, adopting a narrow-band signal behavior model determined after the bandwidth signal behavior model is simplified as a pre-distortion model when the bandwidth information of the input signal does not confirm to the bandwidth signal rule, determining a pre-distortion channel according to the pre-distortion model and adopting the pre-distortion channel to conduct pre-distortion processing on the input signal. The bandwidth/narrow-band signal behavior model keeps the capacity of various actual dynamic characteristics of a description power amplifier, accordingly the problem of frequency spectrum re-growth brought by unsatisfactory bandwidth matching of the amplifier is solved, a narrow-band signal and a bandwidth signal are provided with matched models, and an application range is wide.

(ZH)
本发明提供了一种预失真处理方法和系统,以解决现有预失真处理应用范围较窄的问题。所述的方法包括:获取依据小区建立信息配置的输入信号的带宽信息;当输入信号的带宽信息符合宽带信号规则时,采用基于放大器特性确定的宽带信号行为模型作为预失真模型;当输入信号的带宽信息不符合宽带信号规则时,采用对宽带信号行为模型简化后确定的窄带信号行为模型作为预失真模型;依据预失真模型确定预失真通道,并采用预失真通道对输入信号进行预失真处理。宽带/窄带信号行为模型均保持了描述功率放大器各种实际动态特性的能力,从而解决放大器由于宽带匹配不理想带来的频谱再生的问题,且无论是窄带信号还是宽带信号均具有匹配的模型,应用范围广泛。