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1. 发明授权

US11588520B2 Multi-cell processing architectures for modelling and impairment compensation in multi-input multi-output systems 有权
公开(公告)号：US11588520B2
公开(公告)日：2023-02-21
申请号：US17367451
申请日：2021-07-05
申请人： Fadhel M. Ghannouchi , Aidin Bassam , Mohamed Helaoui , Ramzi Darraji
发明人： Fadhel M. Ghannouchi , Aidin Bassam , Mohamed Helaoui , Ramzi Darraji
IPC分类号： H04L1/02 , H04B7/0417 , H04L25/03 , H04B1/04 , H04B7/0456 , H04B7/06
摘要： A method for predistortion including receiving a plurality of input signals forming a multiple-input signal in a multiple-input multiple-output system, generating a pre-distorted multiple-input signal from the received multiple-input signal, generating a multiple-output signal by feeding the pre-distorted multiple-input signal into a multiple-input and multiple-output transmitter, estimating impairments generated by the multiple-input and multiple-output transmitter, the impairments including nonlinear crosstalk between distinct ones of the plurality of input signals; and adjusting the pre-distorted multiple-input signal to compensate for the estimated impairments.

2. 发明授权

US10721702B2 System and method for enhanced transmitter efficiency 有权
公开(公告)号：US10721702B2
公开(公告)日：2020-07-21
申请号：US16429302
申请日：2019-06-03
申请人： Fadhel M Ghannouchi
发明人： Fadhel M. Ghannouchi , Mehdi Vejdaniamiri , Mohamed Helaoui
IPC分类号： H04W56/00 , H04B1/04 , H04L27/08 , H04L27/36 , H03F1/02 , H03F3/24 , H04L25/03 , H04W74/00 , H04W88/02 , H04W88/08
摘要： A method for distortion compensation in a transmission link comprising obtaining information of an amplitude distribution of a signal prior to being transmitted by a transmitter, receiving the transmitted signal at a receiver and determining a received signal amplitude distribution, comparing the received signal amplitude distribution to the amplitude distribution of the signal prior to transmission and using results of the comparison to estimate the AM/AM non-linearity in the transmitter.

3. 发明授权

US09621236B2 System and method for distortion correction in MIMO and multiband transmitters 有权
公开(公告)号：US09621236B2
公开(公告)日：2017-04-11
申请号：US14319421
申请日：2014-06-30
申请人： Fadhel M. Ghannouchi
发明人： Fadhel M. Ghannouchi , Seyed Aidin Bassam , Mohamed Helaoui , Ramzi Darraji
IPC分类号： H04B7/02 , H04B7/0417 , H04L25/03 , H04B1/04 , H04B7/0456 , H04B7/06
CPC分类号： H04B7/0417 , H04B1/0475 , H04B7/0456 , H04B7/0632 , H04B7/0639 , H04L25/03343 , H04L25/03891
摘要： The present invention relates to a method for multiple-input multiple-output impairment pre-compensation comprising: receiving a multiple-input signal; generating a pre-distorted multiple-input signal from the received multiple-input signal; generating a multiple-output signal by feeding the pre-distorted multiple-input signal into a multiple-input and multiple-output transmitter; estimating impairments generated by the multiple-input and multiple-output transmitter; and adjusting the pre-distorted multiple-input signal to compensate for the estimated impairments. The present invention also relates to a pre-compensator for use with a multiple-input and multiple-output transmitter, comprising: a multiple-input for receiving a multiple-input signal; a matrix of pre-processing cells for generating a pre-distorted multiple-input signal from the received multiple-input signal; and a multiple-output for feeding the pre-distorted multiple-input signal to the multiple-input and multiple-output transmitter. The pre-processing cells are configured so as to estimate impairments generated by the multiple-input and multiple-output transmitter and adjust the pre-distorted multiple-input signal to compensate for the estimated impairments.

4. 发明申请

US20170063316A1 High Efficiency Ultra-Wideband Amplifier 审中-公开
标题翻译：高效率超宽带放大器
公开(公告)号：US20170063316A1
公开(公告)日：2017-03-02
申请号：US15226554
申请日：2016-08-02
申请人： Fadhel M. Ghannouchi
发明人： Mohammadhassan Akbarpour , Fadhel M. Ghannouchi , Mohamed Helaoui
IPC分类号： H03F3/26 , H03F1/32 , H03F3/193 , H03F3/21
CPC分类号： H03F3/265 , H03F1/0261 , H03F1/0288 , H03F1/223 , H03F1/3205 , H03F1/3217 , H03F1/56 , H03F3/193 , H03F3/195 , H03F3/21 , H03F3/211 , H03F3/3028 , H03F2200/222 , H03F2200/387 , H03F2200/451 , H03F2200/534 , H03F2200/541 , H03F2200/555
摘要： An amplifier comprising an active device having an output terminal for driving a load impedance in response to a signal applied to an input terminal and a current source connected to the active device to provide a bias to the active device wherein when the active device is operated an output power of the active device increases with increasing load impedance.
摘要翻译：一种放大器，包括有源器件，该有源器件具有用于响应于施加到输入端的信号驱动负载阻抗的输出端和连接到有源器件的电流源，以向有源器件提供偏置，其中当有源器件被操作时有源器件的输出功率随着负载阻抗的增加而增加。

5. 发明申请

US20150236731A1 DIGITAL MULTI-BAND PREDISTORTION LINEARIZER WITH NONLINEAR SUBSAMPLING ALGORITHM IN THE FEEDBACK LOOP 有权
标题翻译：数字多带预测线性化器在反馈环路中具有非线性补充算法
公开(公告)号：US20150236731A1
公开(公告)日：2015-08-20
申请号：US14467642
申请日：2014-08-25
申请人： Fadhel M. GHANNOUCHI
发明人： Fadhel M. GHANNOUCHI , Aiden BASSAM , Mohamed HELAOUI , Andrew KWAN
IPC分类号： H04B1/04 , H04L25/03
CPC分类号： H04B1/0475 , H03F1/3247 , H03F3/189 , H03F3/245 , H03F2200/111 , H03F2200/204 , H03F2200/207 , H03F2200/408 , H04B2001/0425 , H04L25/03343 , H04L2025/03356
摘要： A concurrent multi-band linearized transmitter (CMLT) has a concurrent digital multi-band predistortion block (CDMPB) and a concurrent multi-band transmitter (CMT) connected to the CDMPB. The CDMPB can have a plurality of digital baseband signal predistorter blocks (DBSPBs), an analyzing and modeling (A&M) stage, and a signal observation feedback loop. Each DBSPB can have a plurality of inputs, each corresponding to a single frequency band of the multi-band input signal, and its output corresponding to a single frequency band; each output connect corresponding to an input of the CMLT. The A&M stage can have a plurality of outputs connected to and updating the parameters of the DBSPBs, and a plurality of inputs connected to either both outputs of the signal observation loop or the output of the subsampling loop and to outputs of the DBSPBs. The A&M stage can perform signals' time alignment, reconstruction of signals and compute parameters of DBSPBs.
摘要翻译：并发多频带线性化发射机（CMLT）具有连接到CDMPB的并行数字多频带预失真块（CDMPB）和并发多频带发射机（CMT）。 CDMPB可以具有多个数字基带信号预失真器块（DBSPB），分析和建模（A＆M）级以及信号观察反馈回路。每个DBSPB可以具有多个输入，每个输入对应于多频带输入信号的单个频带，并且其输出对应于单个频带; 每个输出连接对应于CMLT的输入。 A＆M级可以具有连接到并更新DBSPB的参数的多个输出，以及连接到信号观察回路的两个输出或者二次采样回路的输出以及DBSPB的输出的多个输入。 A＆M舞台可以执行信号的时间对齐，重建信号和计算DBSPB的参数。

6. 发明申请

US20110273187A1 PASSIVE SOURCE AND LOAD-PULL ARCHITECTURE FOR HIGH REFLECTION FACTOR SYNTHESIS 有权
标题翻译：被动源和负载结构用于高反射因子合成
公开(公告)号：US20110273187A1
公开(公告)日：2011-11-10
申请号：US13097303
申请日：2011-04-29
申请人： FADHEL M. GHANNOUCHI , Souheil Ben Smida , Mohammad Shabi Hashmi , Mohamed Helaoui
发明人： FADHEL M. GHANNOUCHI , Souheil Ben Smida , Mohammad Shabi Hashmi , Mohamed Helaoui
IPC分类号： G01R27/02
CPC分类号： G01R27/32
摘要： An enhanced loop in a passive tuner consists of an extremely low loss coupler and a high directivity circulator. In the case of source reflection factor synthesis, a passive loop generates an additional incident traveling wave. This wave, added to the primary incident traveling wave, augments the traveling wave and thus increases the magnitude of the synthesized reflection factor at the source port of a device, such as a transistor. In the case of load reflection factor synthesis, the passive loop augments the initial reflected traveling wave by pumping an additional traveling wave. This additional traveling wave helps in synthesizing a higher load reflection factor at the load port. This architecture is capable of high reflection factor synthesis that enables load synthesis even on the border of the Smith chart. There is no problem of instability with the architecture of the present invention.
摘要翻译：无源调谐器中的增强型环路由极低损耗耦合器和高方向性循环器组成。在源反射因子合成的情况下，无源环路产生附加的入射行波。加在主入射行波上的波加大了行波，从而增加了晶体管等器件的源极端的合成反射系数的大小。在负载反射因子合成的情况下，被动环通过泵浦附加的行波来增加初始反射行波。这种额外的行波有助于在负载端口合成更高的负载反射系数。该架构能够进行高反射因子合成，即使在史密斯圆图的边界也能进行负载合成。本发明的架构不存在不稳定的问题。

7. 发明授权

US6072364A Adaptive digital predistortion for power amplifiers with real time modeling of memoryless complex gains 失效
标题翻译：功率放大器的自适应数字预失真与无记忆复合增益的实时建模
公开(公告)号：US6072364A
公开(公告)日：2000-06-06
申请号：US877479
申请日：1997-06-17
申请人： Ernesto G. Jeckeln , Fadhel M. Ghannouchi , Mohamad A. Sawan
发明人： Ernesto G. Jeckeln , Fadhel M. Ghannouchi , Mohamad A. Sawan
IPC分类号： H03F1/32 , H03F1/26
CPC分类号： H03F1/3247 , H03F1/3288 , H03F2201/3233
摘要： In an adaptive method and device for predistorting a signal to be transmitted, supplied by a signal source to an input of a power amplifier having a output for delivering an amplified output signal, the following steps are conducted: predistorting the signal to be transmitted by means of cascaded predistortion amplitude and phase look-up tables interposed between the signal source and the input of the power amplifier, producing a first feedback signal in response to the predistorted signal, producing a second feedback signal in response to the amplified output signal from the power amplifier, delaying the first feedback signal for eliminating any time lag between the first and second feedback signals, and real time modeling the predistortion amplitude and phase look-up tables in response to the first and second feedback signals in order to update these two tables. The position of the delay circuit (delaying step), that permits the use of the real time modeling procedure, eliminates the convergence time and the requirement for any iterative algorithms.
摘要翻译：在用于将要发送的信号预失真的自适应方法和装置中，由信号源提供给具有用于传送放大的输出信号的输出的功率放大器的输入端，执行以下步骤：通过装置预失真发送的信号插入信号源和功率放大器的输入之间的级联预失真振幅和相位查找表，响应于预失真信号产生第一反馈信号，响应于来自功率的放大的输出信号产生第二反馈信号放大器，延迟第一反馈信号以消除第一和第二反馈信号之间的任何时间滞后，以及响应于第一和第二反馈信号对预失真幅度和相位查找表进行实时建模以更新这两个表。允许使用实时建模程序的延迟电路（延迟步骤）的位置消除了收敛时间和任何迭代算法的需求。

8. 发明申请

US20210211147A1 DIGITAL MULTI-BAND PREDISTORTION LINEARIZER WITH NON-LINEAR SUBSAMPLING ALGORITHM IN THE FEEDBACK LOOP 有权
公开(公告)号：US20210211147A1
公开(公告)日：2021-07-08
申请号：US17207614
申请日：2021-03-20
申请人： Fadhel M. GHANNOUCHI , Aidin BASSAM , Mohamed HELAOUI , Andrew KWAN
发明人： Fadhel M. GHANNOUCHI , Aidin BASSAM , Mohamed HELAOUI , Andrew KWAN
IPC分类号： H04B1/04 , H04L25/03 , H03F3/189 , H03F1/32 , H03F3/24
摘要： A concurrent multi-band linearized transmitter (CMLT) has a concurrent digital multi-band predistortion block (CDMPB) and a concurrent multi-band transmitter (CMT) connected to the CDMPB. The CDMPB can have a plurality of digital baseband signal predistorter blocks (DBSPBs), an analyzing and modeling (A&M) stage, and a signal observation feedback loop. Each DBSPB can have a plurality of inputs, each corresponding to a single frequency band of the multi-band input signal, and its output corresponding to a single frequency band; each output connect corresponding to an input of the CMLT. The A&M stage can have a plurality of outputs connected to and updating the parameters of the DBSPBs, and a plurality of inputs connected to either both outputs of the signal observation loop or the output of the subsampling loop and to outputs of the DBSPBs. The A&M stage can perform signals' time alignment, reconstruction of signals and compute parameters of DBSPBs.

9. 发明授权

US11057081B2 Multi-cell processing architectures for modeling and impairment compensation in multi-input multi-output systems 有权
公开(公告)号：US11057081B2
公开(公告)日：2021-07-06
申请号：US16812452
申请日：2020-03-09
申请人： Fadhel M Ghannouchi
发明人： Fadhel M. Ghannouchi , Seyed Aidin Bassam , Mohamed Helaoui , Ramzi Darraji
IPC分类号： H04B7/02 , H04B7/0417 , H04L25/03 , H04B1/04 , H04B7/0456 , H04B7/06
摘要： A method for predistortion comprising receiving a plurality of input signals forming a multiple-input signal in a multiple-input multiple-output system, generating a pre-distorted multiple-input signal from the received multiple-input signal, generating a multiple-output signal by feeding the pre-distorted multiple-input signal into a multiple-input and multiple-output transmitter, estimating impairments generated by the multiple-input and multiple-output transmitter, the impairments comprising nonlinear crosstalk between distinct ones of the plurality of input signals; and adjusting the pre-distorted multiple-input signal to compensate for the estimated impairments.

10. 发明申请

US20200351808A1 SYSTEM AND METHOD FOR ENHANCED TRANSMITTER EFFICIENCY 审中-公开
公开(公告)号：US20200351808A1
公开(公告)日：2020-11-05
申请号：US16933103
申请日：2020-07-20
申请人： Fadhel M Ghannouchi
发明人： Fadhel M. Ghannouchi , Mehdi VEJDANIAMIRI , Mohamed Helaoui
IPC分类号： H04W56/00 , H04B1/04 , H04L27/08 , H04L27/36 , H03F1/02 , H03F3/24 , H04L25/03
摘要： A method for distortion compensation in a transmission link comprising obtaining information of an amplitude distribution of a signal prior to being transmitted by a transmitter, receiving the transmitted signal at a receiver and determining a received signal amplitude distribution, comparing the received signal amplitude distribution to the amplitude distribution of the signal prior to transmission and using results of the comparison to estimate the AM/AM non-linearity in the transmitter.

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