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公开(公告)号：US08488718B2
公开(公告)日：2013-07-16
申请号：US12196507
申请日：2008-08-22
CPC分类号： H04L27/364
摘要： An emission chain, comprising a processing pathway for an input signal which includes a digital signal decomposition according to N signal components, with N an integer greater than or equal to 2. The N signal components being converted from a digital form into an analog form and following distinct physical pathways that induce first respective delays on the N signal components. A delayed input signal is obtained by applying a second delay (τ) having a value greater than or equal to the maximum value of the first delays. Next, N correction delays (τ−τi) are applied respectively to the N signal components based on a comparison between said input signal delayed by the second delay and the signal to be emitted. Finally, the signal to be provided to a power amplifier is obtained by combining the N signal components obtained on completion of the previous step.
摘要翻译： 一种发射链，包括用于输入信号的处理路径，其包括根据N个信号分量的数字信号分解，N是大于或等于2的整数.N个信号分量从数字形式转换为模拟形式， 遵循在N个信号分量上引起第一相应延迟的不同物理途径。 通过施加具有大于或等于第一延迟的最大值的值的第二延迟（τ）来获得延迟的输入信号。 接下来，基于延迟了第二延迟的所述输入信号与要发射的信号之间的比较，分别对N个信号分量施加N个校正延迟（τ-τi）。 最后，通过组合在前一步骤完成时获得的N个信号分量来获得要提供给功率放大器的信号。
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公开(公告)号：US20090074105A1
公开(公告)日：2009-03-19
申请号：US12196507
申请日：2008-08-22
IPC分类号： H04L25/49
CPC分类号： H04L27/364
摘要： An emission chain is suitable for receiving an input signal and for providing a signal to be emitted. It comprises a processing pathway for the input signal which includes a digital signal decomposition according to N signal components, with N an integer greater than or equal to 2, said N signal components, on the one hand, being converted from a digital form into an analog form and, on the other hand, following respectively distinct physical pathways, said physical pathways inducing first respective delays on the N signal components. The input chain comprises a power amplifier.A delayed input signal is obtained by applying a second delay (τ) having a value greater than or equal to the maximum value of the first delays. Next, N correction delays (τ−τi) are applied respectively to the N signal components, this step being carried out on the basis of a comparison between said input signal delayed by the second delay and the signal to be emitted. Finally, the signal to be provided to the power amplifier is obtained by combining the N signal components obtained on completion of the previous step.
摘要翻译： 发射链适用于接收输入信号并提供要发射的信号。 它包括用于输入信号的处理路径，其包括根据N个信号分量的数字信号分解，N是大于或等于2的整数，所述N个信号分量一方面从数字形式转换为 另一方面，分别具有不同的物理途径，所述物理路径在N个信号分量上引起第一相应的延迟。 输入链包括功率放大器。 通过施加具有大于或等于第一延迟的最大值的值的第二延迟（τ）来获得延迟的输入信号。 接下来，分别对N个信号分量施加N个校正延迟（tau-taui），该步骤是基于延迟了第二延迟的所述输入信号与要发射的信号之间的比较来执行的。 最后，通过组合在前一步骤完成时获得的N个信号分量来获得要提供给功率放大器的信号。
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公开(公告)号：US07974592B2
公开(公告)日：2011-07-05
申请号：US12150251
申请日：2008-04-25
IPC分类号： H04B1/04
CPC分类号： H03F1/3247 , H03F1/34 , H03F3/24 , H03F2200/451 , H04B2001/0433
摘要： A transmission chain comprises a power amplifier adapted for receiving as input a signal to be amplified Sw(t) and for providing as output an amplified signal Dw(t); a predistortion module comprising a linearization unit adapted for applying a predistortion coefficient W(t) to an input signal S(t), and a unit for determining said predistortion coefficient. The input signal S(t) is received and the amplified signal Dw(t) is received through a return pathway, at the level of the unit for determining the predistortion coefficient, and the predistortion coefficient is determined on the basis of a comparison between the input signal and the amplified signal. Next, at the level of the linearization unit, the predistortion coefficient is applied to the input signal to provide as output the signal to be amplified. The determining unit determines the predistortion coefficient on the basis of a first-order approximation of the input signal.
摘要翻译： 传输链包括功率放大器，用于接收要被放大的信号Sw（t）作为输入，并且用于提供放大信号Dw（t）作为输出。 预失真模块，包括适于将预失真系数W（t）应用于输入信号S（t）的线性化单元和用于确定所述预失真系数的单元。 输入信号S（t）被接收，并且放大信号Dw（t）通过返回路径在用于确定预失真系数的单元的电平处被接收，并且预失真系数基于 输入信号和放大信号。 接下来，在线性化单元的电平处，将预失真系数施加到输入信号，以提供要放大的信号作为输出。 确定单元基于输入信号的一阶近似来确定预失真系数。
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公开(公告)号：US20080268794A1
公开(公告)日：2008-10-30
申请号：US12150251
申请日：2008-04-25
IPC分类号： H04B1/04
CPC分类号： H03F1/3247 , H03F1/34 , H03F3/24 , H03F2200/451 , H04B2001/0433
摘要： A transmission chain comprises a power amplifier adapted for receiving as input a signal to be amplified Sw(t) and for providing as output an amplified signal Dw(t); a predistortion module comprising, on the one hand, a linearization unit adapted for applying a predistortion coefficient W(t) to an input signal S(t), and, on the other hand, a unit for determining said predistortion coefficient.On the one hand, the input signal S(t) is received and, on the other hand, the amplified signal Dw(t) is received through a return pathway, at the level of the unit for determining the predistortion coefficient, and the predistortion coefficient is determined on the basis of a comparison between the input signal and the amplified signal. Next, at the level of the linearization unit, the predistortion coefficient is applied to the input signal, so as to provide as output the signal to be amplified. The determining unit determines the predistortion coefficient on the basis of a first-order approximation of the input signal.
摘要翻译： 传输链包括功率放大器，其适于作为输入接收要被放大的信号W（t），并且用于提供放大信号D（w）作为输出。 一种预失真模块，其一方面包括适用于将预失真系数W（t）应用于输入信号S（t）的线性化单元，另一方面，包括用于确定所述预失真系数的单元。 一方面，接收输入信号S（t），另一方面，通过返回路径接收放大信号D（w），在该单位的电平处 确定预失真系数，并且基于输入信号和放大信号之间的比较来确定预失真系数。 接下来，在线性化单元的电平处，将预失真系数施加到输入信号，以便提供要被放大的信号作为输出。 确定单元基于输入信号的一阶近似来确定预失真系数。
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