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1.发明申请Power amplifier linearization methods and apparatus using predistortion in the frequency domain 有权在频域中使用预失真的功率放大器线性化方法和装置公开(公告)号：US20060008028A1
公开(公告)日：2006-01-12
申请号：US10881731
申请日：2004-06-30
IPC分类号： H04L25/49
CPC分类号： H03F3/24 , H03F1/3247 , H03F1/3258 , H03F1/3294 , H03F2200/207 , H03F2200/321 , H04L27/2602 , H04L27/2626 , H04L27/368
摘要： To mitigate the effects of non-linear amplification in a digital transmission system employing a multi-carrier multiplexing communications technique, such as orthogonal frequency division multiplexing or discrete multi-tone, predistortion of an input signal to a power amplifier with a non-linear transfer characteristic is performed in the frequency domain by modifying frequency-domain symbols used to modulate individual sub-carriers. The frequency-domain symbols are modified in a manner that compensates for the amplifier's non-linear transfer characteristic.
摘要翻译： 为了减轻采用诸如正交频分复用或离散多音调的多载波复用通信技术的数字传输系统中的非线性放大的影响，将输入信号预失真到具有非线性传输的功率放大器 通过修改用于调制各个子载波的频域符号，在频域中执行特性。 频域符号以补偿放大器的非线性传输特性的方式进行修改。
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2.发明申请公开(公告)号：US20090129257A1
公开(公告)日：2009-05-21
申请号：US11910138
申请日：2005-03-31
IPC分类号： H04J11/00
CPC分类号： H04L27/368 , H03F1/0205 , H03F1/3247 , H03F1/3294 , H03F3/24 , H04L27/2626
摘要： A system, apparatus, method and article to provide compensation of non-linear transmitter distortion are described. The apparatus may include a receiver node (130) to receive information from a transmitter node (120). The receiver node (130) may include a clipping ratio estimation module (142) to determine parameters of non-linearity of a transmitter at the receiver node (130), a training signal predistortion block (150) to generate predistorted training symbols at the receiver node (130) using the parameters of non-linearity, and a channel equalization block (146) to performing linear equalization at the receiver node (130) using the predistorted training symbols. Other embodiments are described and claimed.
摘要翻译： 描述了提供非线性发射机失真补偿的系统，装置，方法和制品。 该装置可以包括从发射机节点（120）接收信息的接收机节点（130）。 接收机节点（130）可以包括限幅比估计模块（142），用于确定接收机节点（130）处的发射机的非线性参数;训练信号预失真块（150），用于在接收机处产生预失真的训练符号 使用非线性参数的节点（130）和使用预失真训练符号在接收机节点（130）处执行线性均衡的信道均衡块（146）。 描述和要求保护其他实施例。
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公开(公告)号：US07924956B2
公开(公告)日：2011-04-12
申请号：US11910138
申请日：2005-03-31
IPC分类号： H03D1/04
CPC分类号： H04L27/368 , H03F1/0205 , H03F1/3247 , H03F1/3294 , H03F3/24 , H04L27/2626
摘要： A system, apparatus, method and article to provide compensation of non-linear transmitter distortion are described. The apparatus may include a receiver node (130) to receive information from a transmitter node (120). The receiver node (130) may include a clipping ratio estimation module (142) to determine parameters of non-linearity of a transmitter at the receiver node (130), a training signal predistortion block (150) to generate predistorted training symbols at the receiver node (130) using the parameters of non-linearity, and a channel equalization block (146) to performing linear equalization at the receiver node (130) using the predistorted training symbols. Other embodiments are described and claimed.
摘要翻译： 描述了提供非线性发射机失真补偿的系统，装置，方法和制品。 该装置可以包括从发射机节点（120）接收信息的接收机节点（130）。 接收机节点（130）可以包括限幅比估计模块（142），用于确定接收机节点（130）处的发射机的非线性参数;训练信号预失真块（150），用于在接收机处产生预失真的训练符号 使用非线性参数的节点（130）和使用预失真训练符号在接收机节点（130）处执行线性均衡的信道均衡块（146）。 描述和要求保护其他实施例。
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4.发明申请Multicarrier transmitter and methods for generating multicarrier communication signals with power amplifier predistortion and linearization 有权多载波发射机和用于通过功率放大器预失真和线性化产生多载波通信信号的方法公开(公告)号：US20060067426A1
公开(公告)日：2006-03-30
申请号：US10953206
申请日：2004-09-28
申请人： Alexander Maltsev , Ali Sadri , Oleg Poldin , Alexander Maltsev
发明人： Alexander Maltsev , Ali Sadri , Oleg Poldin , Alexander Maltsev
CPC分类号： H04L25/49 , H04L27/2602
摘要： A multicarrier signal is generated by pre-compensating frequency-domain subcarrier symbols for substantially linear distortion subsequently introduced by a time-domain baseband filter.
摘要翻译： 通过对由时域基带滤波器随后引入的基本线性失真进行预补偿的频域子载波符号来生成多载波信号。
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