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1. 发明授权

US07865202B2 Method and system for I/Q branch equalization in OFDM systems 有权
标题翻译： OFDM系统中I / Q分支均衡的方法和系统
公开(公告)号：US07865202B2
公开(公告)日：2011-01-04
申请号：US12251774
申请日：2008-10-15
申请人： Francis Swarts , Mark Kent , Theodoros Georgantas
发明人： Francis Swarts , Mark Kent , Theodoros Georgantas
IPC分类号： H04B15/00
CPC分类号： H04L27/3863 , H04L25/03159 , H04L27/2601 , H04L27/3872
摘要： Aspects of a method and system for I/Q branch equalization in OFDM systems may include determining a transfer function mismatch between an in-phase processing branch, and/or a quadrature processing branch in an OFDM receiver. The determined transfer function mismatch may be compensated for, by applying equalization after a fast Fourier transform (FFT) in an in-phase processing branch and/or a quadrature processing branch. The OFDM system may be compliant with, for example, UMTS LTE (EUTRA), WiMAX (IEEE 802.16), DVB-H, and WLAN (IEEE 802.11). A transfer function may be measured for an in-phase branch filter and/or quadrature branch filter to determine the transfer function mismatch. The transfer function mismatch may be compensated for, in frequency domain by the equalizer. The transfer function mismatch may comprise magnitude and/or phase response mismatch, wherein the magnitude and/or phase response mismatch may be a function of frequency.
摘要翻译： OFDM系统中用于I / Q分支均衡的方法和系统的方面可以包括确定OFDM接收机中的同相处理分支和/或正交处理分支之间的传递函数失配。可以通过在同相处理分支和/或正交处理分支中的快速傅立叶变换（FFT）之后应用均衡来补偿确定的传递函数失配。 OFDM系统可以符合例如UMTS LTE（EUTRA），WiMAX（IEEE 802.16），DVB-H和WLAN（IEEE 802.11）。可以对同相分支滤波器和/或正交分支滤波器测量传递函数，以确定传递函数失配。可以通过均衡器在频域中补偿传递函数失配。传递函数失配可以包括幅度和/或相位响应不匹配，其中幅度和/或相位响应失配可以是频率的函数。

2. 发明申请

US20090225877A1 METHOD AND SYSTEM FOR CHARACTERIZATION OF FILTER TRANSFER FUNCTIONS IN OFDM SYSTEMS 审中-公开
标题翻译： OFDM系统滤波器传输函数特征的方法和系统
公开(公告)号：US20090225877A1
公开(公告)日：2009-09-10
申请号：US12251815
申请日：2008-10-15
申请人： Francis Swarts , Mark Kent , Theodoros Georgantas
发明人： Francis Swarts , Mark Kent , Theodoros Georgantas
IPC分类号： H04L27/28
CPC分类号： H04L27/2647 , H04L27/3863 , H04L2027/0016
摘要： Aspects of a method and system for characterization of filter transfer functions in OFDM systems may include receiving at a filter, a calibration signal which is generated from conversion of a digital input signal comprising N samples to an analog signal. The digital input signal may comprise one (1) full scale sample and N-1 zero samples and N is an integer. In response to receiving the calibration signal, the filter may generate an output analog signal, wherein the output analog signal may be converted to an output digital signal, and a transfer function of the filter may be determined via a Fast Fourier transformation of the output digital signal. The OFDM system may be compliant with a wireless standard, wherein the wireless standard may comprise UMTS EUTRA (LTE), WiMAX(IEEE 802.16), and/or WLAN (IEEE 802.11).
摘要翻译：用于表征OFDM系统中的滤波器传递函数的方法和系统的方面可以包括在滤波器处接收由从包含N个采样的数字输入信号转换为模拟信号而产生的校准信号。数字输入信号可以包括一（1）满量程样本和N-1个零样本，N是整数。响应于接收到校准信号，滤波器可以产生输出模拟信号，其中输出模拟信号可以被转换为输出数字信号，并且滤波器的传递函数可以通过输出数字信号的快速傅立叶变换来确定信号。 OFDM系统可以符合无线标准，其中无线标准可以包括UMTS EUTRA（LTE），WiMAX（IEEE 802.16）和/或WLAN（IEEE 802.11）。

3. 发明申请

US20090213724A1 METHOD AND SYSTEM FOR I/Q BRANCH EQUALIZATION IN OFDM SYSTEMS 有权
标题翻译： OFDM系统中I / Q分支均衡的方法和系统
公开(公告)号：US20090213724A1
公开(公告)日：2009-08-27
申请号：US12251774
申请日：2008-10-15
申请人： Francis Swarts , Mark Kent , Theodoros Georgantas
发明人： Francis Swarts , Mark Kent , Theodoros Georgantas
IPC分类号： H04J11/00
CPC分类号： H04L27/3863 , H04L25/03159 , H04L27/2601 , H04L27/3872
摘要： Aspects of a method and system for I/Q branch equalization in OFDM systems may include determining a transfer function mismatch between an in-phase processing branch, and/or a quadrature processing branch in an OFDM receiver. The determined transfer function mismatch may be compensated for, by applying equalization after a fast Fourier transform (FFT) in an in-phase processing branch and/or a quadrature processing branch. The OFDM system may be compliant with, for example, UMTS LTE (EUTRA), WiMAX (IEEE 802.16), DVB-H, and WLAN (IEEE 802.11). A transfer function may be measured for an in-phase branch filter and/or quadrature branch filter to determine the transfer function mismatch. The transfer function mismatch may be compensated for, in frequency domain by the equalizer. The transfer function mismatch may comprise magnitude and/or phase response mismatch, wherein the magnitude and/or phase response mismatch may be a function of frequency.
摘要翻译： OFDM系统中用于I / Q分支均衡的方法和系统的方面可以包括确定OFDM接收机中的同相处理分支和/或正交处理分支之间的传递函数失配。可以通过在同相处理分支和/或正交处理分支中的快速傅立叶变换（FFT）之后应用均衡来补偿确定的传递函数失配。 OFDM系统可以符合例如UMTS LTE（EUTRA），WiMAX（IEEE 802.16），DVB-H和WLAN（IEEE 802.11）。可以对同相分支滤波器和/或正交分支滤波器测量传递函数，以确定传递函数失配。可以通过均衡器在频域中补偿传递函数失配。传递函数失配可以包括幅度和/或相位响应不匹配，其中幅度和/或相位响应失配可以是频率的函数。

4. 发明授权

US08843094B2 Method and system for blocker detecton and automatic gain control 有权
标题翻译：阻塞检测方法和系统及自动增益控制
公开(公告)号：US08843094B2
公开(公告)日：2014-09-23
申请号：US12853131
申请日：2010-08-09
申请人： Walid Ahmed , John Leung , Theodoros Georgantas , Morten Damgaard , Nelson Sollenberger
发明人： Walid Ahmed , John Leung , Theodoros Georgantas , Morten Damgaard , Nelson Sollenberger
IPC分类号： H04B1/06 , H04B7/00 , H04W52/24 , H04W52/52 , H04B17/00
CPC分类号： H04W52/52 , H04B17/318 , H04W52/245 , H04W52/246
摘要： Aspects of a method and system for integrated blocker detection and automatic gain control are provided. In this regard, a communication device may generate one or more first signal strength indications based on a strength of a received signal at a first point in the analog front-end of the communication device. The communication device may generate one or more second signal strength indications based on a strength of the received signal at a second point in a digital processing module of the communication device. The first point in the analog front-end may be an input or an output of a down-conversion mixer. The second point in the digital processing module may be an output of an analog-to-digital converter or an output of a channel selection filter. The communication device may control, utilizing the first signal strength indication(s) and the second signal strength indication(s), a gain of one or more components of the communication device.
摘要翻译：提供了一种用于集成阻断检测和自动增益控制的方法和系统的方面。在这方面，通信设备可以基于在通信设备的模拟前端的第一点处的接收信号的强度来产生一个或多个第一信号强度指示。通信设备可以基于通信设备的数字处理模块中的第二点处的接收信号的强度来生成一个或多个第二信号强度指示。模拟前端的第一点可以是下变频混频器的输入或输出。数字处理模块中的第二点可以是模数转换器的输出或通道选择滤波器的输出。通信设备可以利用第一信号强度指示和第二信号强度指示来控制通信设备的一个或多个组件的增益。

5. 发明申请

US20120161892A1 Enhanced polar modulator for transmitter 有权
标题翻译：用于发射机的增强极化调制器
公开(公告)号：US20120161892A1
公开(公告)日：2012-06-28
申请号：US13412519
申请日：2012-03-05
申请人： Sofoklis Plevridis , Theodoros Georgantas , Konstantinos D. Vavelidis
发明人： Sofoklis Plevridis , Theodoros Georgantas , Konstantinos D. Vavelidis
IPC分类号： H04L27/32
CPC分类号： H03C5/00 , H03C3/0925 , H03C3/0933 , H03C3/0941 , H03C3/0958
摘要： Enhanced polar modulator for transmitter. Within a phase locked loop (PLL), two point modulation topology is employed in which phase information passes through a limiter (e.g., a ±90° or ±π/2), the phase information dynamic range is divided by a factor (e.g., by 2), and a maximum frequency deviation is also divided by a factor (e.g., by 2). Then, a double balanced up-converter mixer/modulator performs gain adjustment (e.g., magnitude and/or amplitude adjustment) and phase changes of 0° and +180° or 0 and +π (e.g., negative gains values may be employed). Phase adjustment in such an architecture is split and provided to both the PLL and to the mixer/modulator of such a polar modulator within a transmitter module such as may be implemented within a communication device (e.g., which may be a wireless communication device). This architecture that includes a PLL with a double balanced up-converter mixer/modulator suppresses even harmonics.
摘要翻译：用于发射机的增强极化调制器。在锁相环（PLL）中，使用两点调制拓扑，其中相位信息通过限幅器（例如±90°或±＆pgr / / 2），相位信息动态范围除以因子（例如，2），并且最大频率偏差也除以因子（例如，2）。然后，双平衡升压转换器混频器/调制器执行增益调整（例如，幅度和/或幅度调整）以及0°和+ 180°或0°和+＆pgr的相位变化。（例如，可以采用负增益值）。这种架构中的相位调整被分离并提供给发射机模块内的PLL和这种极性调制器的混频器/调制器，例如可以在通信设备（例如，其可以是无线通信设备）内实现。这种包括具有双平衡上变频混频器/调制器的PLL的架构抑制了偶次谐波。

6. 发明授权

US08064842B2 RF integrated circuit with transmitter and multipurpose output ports and methods for use therewith 有权
标题翻译：具有发射器和多用途输出端口的RF集成电路及其使用的方法
公开(公告)号：US08064842B2
公开(公告)日：2011-11-22
申请号：US13083897
申请日：2011-04-11
申请人： Theodoros Georgantas , Konstantinos D. Vavelidis , Sofoklis Plevridis , Ilias Bouras
发明人： Theodoros Georgantas , Konstantinos D. Vavelidis , Sofoklis Plevridis , Ilias Bouras
IPC分类号： H04B1/44
CPC分类号： H04B1/406
摘要： An RF integrated circuit (IC) includes a first IC port for coupling a first transmit signal in a first frequency band to at least one external device and a second IC port for coupling a second transmit signal in a second frequency band to the at least one external device. A transmitter module responds to outbound data to generate the first transmit signal in a first mode of operation and to generate the second transmit signal in a second mode of operation, wherein the transmitter module generates the first transmit signal and the second transmit signal in a selected one of a plurality of wireless telephony formats based on a control signal, and wherein the plurality of wireless telephony formats includes a GSM format and at least one non-GSM format.
摘要翻译： RF集成电路（IC）包括用于将第一频带中的第一发射信号耦合到至少一个外部设备的第一IC端口和用于将第二频带中的第二发射信号耦合到所述至少一个的第二IC端口外部设备。发射机模块响应出站数据以在第一操作模式中产生第一发射信号，并在第二操作模式下产生第二发射信号，其中发射机模块在所选择的第一模式中产生第一发射信号和第二发射信号基于控制信号的多种无线电话格式之一，并且其中所述多种无线电话格式包括GSM格式和至少一种非GSM格式。

7. 发明授权

US07869782B2 Multi-mode transmit and receive PLL 有权
标题翻译：多模发送和接收PLL
公开(公告)号：US07869782B2
公开(公告)日：2011-01-11
申请号：US11956938
申请日：2007-12-14
申请人： Sofoklis E. Plevridis , Konstantinos D. Vavelidis , Theodoros Georgantas , Ilias A. Bouras
发明人： Sofoklis E. Plevridis , Konstantinos D. Vavelidis , Theodoros Georgantas , Ilias A. Bouras
IPC分类号： H04B1/06
CPC分类号： H03L7/23 , H03L7/0891
摘要： A local oscillator (LO) signal generator that has a reference phase-locked loop (PLL), a receiver LO PLL and a transmitter LO PLL. A reference PLL is coupled to receive a reference clock input and to generate a reference PLL signal at its output, which then drives a receiver PLL and a transmitter PLL. The receiver PLL is coupled to receive the reference PLL signal and to use the reference PLL signal as its reference input to generate a receiver LO signal at its output. The transmitter PLL is coupled to receive the reference PLL signal and to use the reference PLL signal as its reference input to generate a transmitter LO signal at its output.
摘要翻译：具有参考锁相环（PLL）的本地振荡器（LO）信号发生器，接收器LO PLL和发射机LO PLL。参考PLL被耦合以接收参考时钟输入并在其输出端产生参考PLL信号，然后驱动接收机PLL和发射机PLL。接收器PLL被耦合以接收参考PLL信号并且使用参考PLL信号作为其参考输入，以在其输出端产生接收器LO信号。发射机PLL被耦合以接收参考PLL信号并且使用参考PLL信号作为其参考输入，以在其输出端产生发射机LO信号。

8. 发明申请

US20090280756A1 RF INTEGRATED CIRCUIT WITH TRANSMITTER AND MULTIPURPOSE OUTPUT PORTS AND METHODS FOR USE THEREWITH 有权
标题翻译：具有发射机和多路输出端口的RF集成电路及其使用方法
公开(公告)号：US20090280756A1
公开(公告)日：2009-11-12
申请号：US12118853
申请日：2008-05-12
申请人： Theodoros Georgantas , Konstantinos D. Vavelidis , Sofoklis Plevridis , Ilias Bouras
发明人： Theodoros Georgantas , Konstantinos D. Vavelidis , Sofoklis Plevridis , Ilias Bouras
IPC分类号： H04B1/02
CPC分类号： H04B1/406
摘要： An RF integrated circuit (IC) includes a first IC port for coupling a first transmit signal in a first frequency band to at least one external device and a second IC port for coupling a second transmit signal in a second frequency band to the at least one external device. A transmitter module responds to outbound data to generate the first transmit signal in a first mode of operation and to generate the second transmit signal in a second mode of operation, wherein the transmitter module generates the first transmit signal and the second transmit signal in a selected one of a plurality of wireless telephony formats based on a control signal, and wherein the plurality of wireless telephony formats includes a code divisional multiple access format and at least one non-code division multiple access format.
摘要翻译： RF集成电路（IC）包括用于将第一频带中的第一发射信号耦合到至少一个外部装置的第一IC端口和用于将第二频带中的第二发射信号耦合到所述至少一个的第二IC端口外部设备。发射机模块响应于出站数据以在第一操作模式中产生第一发射信号，并且在第二操作模式下产生第二发射信号，其中，所述发射机模块产生所选择的第一发射信号和第二发射信号基于控制信号的多个无线电话格式之一，并且其中所述多个无线电话格式包括码分多址格式和至少一个非码分多址格式。

9. 发明申请

US20120034950A1 RF INTEGRATED CIRCUIT WITH TRANSMITTER AND MULTIPURPOSE OUTPUT PORTS AND METHODS FOR USE THEREWITH 有权
标题翻译：具有发射机和多路输出端口的RF集成电路及其使用方法
公开(公告)号：US20120034950A1
公开(公告)日：2012-02-09
申请号：US13273831
申请日：2011-10-14
申请人： Theodoros Georgantas , Konstantinos D. Vavelidis , Sofoklis Plevridis , Ilias Bouras
发明人： Theodoros Georgantas , Konstantinos D. Vavelidis , Sofoklis Plevridis , Ilias Bouras
IPC分类号： H04W88/02
CPC分类号： H04B1/406
摘要： An RF integrated circuit (IC) includes a first IC port for coupling a first transmit signal in a first frequency band to at least one external device and a second IC port for coupling a second transmit signal in a second frequency band to the at least one external device. A transmitter module responds to outbound data to generate the first transmit signal in a first mode of operation and to generate the second transmit signal in a second mode of operation, wherein the transmitter module generates the first transmit signal and the second transmit signal in a selected one of a plurality of wireless telephony formats based on a control signal, and wherein the plurality of wireless telephony formats includes a UMTS format and at least one non-UMTS format.
摘要翻译： RF集成电路（IC）包括用于将第一频带中的第一发射信号耦合到至少一个外部装置的第一IC端口和用于将第二频带中的第二发射信号耦合到所述至少一个的第二IC端口外部设备。发射机模块响应于出站数据以在第一操作模式中产生第一发射信号，并且在第二操作模式下产生第二发射信号，其中，所述发射机模块产生所选择的第一发射信号和第二发射信号基于控制信号的多个无线电话格式之一，并且其中所述多个无线电话格式包括UMTS格式和至少一个非UMTS格式。

10. 发明授权

US07953377B2 WCDMA transmit architecture 有权
标题翻译： WCDMA传输架构
公开(公告)号：US07953377B2
公开(公告)日：2011-05-31
申请号：US12119066
申请日：2008-05-12
申请人： Theodoros Georgantas , Konstantinos D. Vavelidis , Sofoklis Plevridis , Babis (Charalampos) Kapnistis , Spyridon Kavadias
发明人： Theodoros Georgantas , Konstantinos D. Vavelidis , Sofoklis Plevridis , Babis (Charalampos) Kapnistis , Spyridon Kavadias
IPC分类号： H04B1/02
CPC分类号： H03G3/3042
摘要： Wideband-Code Division Multiple Access (W-CDMA) transmit architecture. A baseband digital processing module operates cooperatively with an analog signal processing module to effectuate highly adjustable and highly accurate gain adjustment in accordance with transmitter processing within a communication device. The gain adjustment and/or gain control is partitioned between the digital and analog domains by employing two cooperatively operating digital and analog modules, respectively. Gain adjustment in the analog domain is performed in a relatively more coarse fashion that in the digital domain. If desired, gain adjustment in each of the analog and digital domains is performed across a range of discrete steps. The discrete steps in the analog domain are larger than the discrete steps in the digital domain. Also, the discrete steps in the digital domain may be interposed between two successive discrete steps in the analog domain.
摘要翻译：宽带码分多址（W-CDMA）传输架构。基带数字处理模块与模拟信号处理模块协同工作，以根据通信设备内的发射机处理实现高度可调节和高度准确的增益调整。增益调节和/或增益控制通过分别使用两个协同操作的数字和模拟模块在数字和模拟域之间进行分区。模拟域中的增益调整以数字域中相对较粗略的方式执行。如果需要，在每个模拟和数字域中的增益调整在一系列离散步骤中执行。模拟域中的离散步长大于数字域中的离散步长。此外，数字域中的离散步骤可以插入在模拟域中的两个连续离散步骤之间。

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