公开(公告)号：US07177377B2

公开(公告)日：2007-02-13

申请号：US10463143

申请日：2003-06-17

申请人： Kuo-Ming Wu ,  Hung-Kun Chen ,  Mao-Ching Chiu ,  Jui-Hsi Cheng

发明人： Kuo-Ming Wu ,  Hung-Kun Chen ,  Mao-Ching Chiu ,  Jui-Hsi Cheng

IPC分类号： H04B14/06

CPC分类号： C30B25/18 ,  H04L27/0014 ,  H04L2027/0065

摘要： An avoidance method for co-channel interference in a wireless network. The first step of the method is to evaluate an interference measure on each subcarrier. Based on the interference measure of each subcarrier, a peak-to-average measure ratio of interference within the received symbol is then obtained. If the peak-to-average measure ratio of interference is greater than a predetermined threshold, a most interfered subcarrier at which the maximal interference measure occurs is detected. Accordingly, a downgrading factor is set for the most interfered subcarrier.

摘要翻译： 一种用于无线网络中同信道干扰的回避方法。 该方法的第一步是评估每个子载波的干扰测量。 基于每个子载波的干扰测量，然后获得接收符号内的干扰的峰均平均测量比。 如果干扰的峰均平均测量比大于预定阈值，则检测发生最大干扰测量的最受干扰的子载波。 因此，对最受干扰的子载波设置降级因子。

公开(公告)号：US07298793B2

公开(公告)日：2007-11-20

申请号：US10645107

申请日：2003-08-21

申请人： Kuo-Ming Wu ,  Mao-Ching Chiu ,  Jui-Hsi Cheng

发明人： Kuo-Ming Wu ,  Mao-Ching Chiu ,  Jui-Hsi Cheng

IPC分类号： H04K1/02 ,  H04L25/03 ,  H04L25/49

CPC分类号： H04L27/364 ,  H04L27/2626

摘要： A method for I/Q mismatch calibration of a transmitter. First, a discrete-time signal is generated. Next, a corrected signal based on the discrete-time signal and a set of correction parameters Ap and Bp is obtained. Next, the corrected signal is converted to an analog corrected signal. Next, I/Q modulation is applied to the analog corrected signal and outputs a modulated signal. Next, a first, second, and third desired component measures and a first, second, and third image component measures with the first, second and third sets of the correction parameters Ap and Bp are respectively obtained from the modulated signal. Next, a fourth and fifth set of correction parameters Ap and Bp are obtained based on the first, the second, and the third desired component measures as well as the first, the second, and the third image component measures. Next, a fourth desired component measure and a fourth image component measure with the fourth set of correction parameters Ap and Bp and a fifth desired component measure and a fifth image component measure with the fifth set of correction parameters Ap and Bp are obtained from the modulated signal. Finally, a final set of the correction parameters Ap and Bp are selected from the fourth and fifth sets of correction parameters.

摘要翻译： 一种用于发射机的I / Q不匹配校准的方法。 首先，产生离散时间信号。 接下来，获得基于离散时间信号的校正信号和一组校正参数A＆lt; P＆gt;和B＆lt; P＆lt; 接下来，将校正后的信号转换为模拟校正信号。 接下来，将I / Q调制应用于模拟校正信号并输出​​调制信号。 接下来，第一，第二和第三期望分量测量以及第一，第二和第三图像分量测量第一，第二和第三组校正参数A P和P P 分别从调制信号获得。 接下来，基于第一，第二和第三所需分量测量以及第一和第三组的第一和第三组的校正参数A P和P P ，第二和第三图像分量测量。 接下来，使用第四组校正参数A P和P P以及第五期望分量测量值和第五图像分量测量第四期望分量测量值和第四图像分量测量值 从调制信号获得具有第五组校正参数A＆lt; P＆gt;和B＆gt; P＆lt; P＆gt;的测量。 最后，从第四组和第五组校正参数中选择最后一组校正参数A P和/或P 。

公开(公告)号：US20050047536A1

公开(公告)日：2005-03-03

申请号：US10653300

申请日：2003-09-02

申请人： Kuo-Ming Wu ,  Jui-Hsi Cheng ,  Mao-Ching Chiu

发明人： Kuo-Ming Wu ,  Jui-Hsi Cheng ,  Mao-Ching Chiu

IPC分类号： H04L27/26 ,  H04L27/38 ,  H04L27/06

CPC分类号： H04L27/3863 ,  H04L27/2647

摘要： A method for I/Q mismatch calibration of a receiver having an I/Q correction module with correction parameters, comprising the steps of generating a test signal containing a single tone waveform with frequency of a carrier frequency plus a predetermined frequency, applying I/Q demodulation to reduce the central frequency of the test signal and outputting a demodulated signal, converting the demodulated signal to a digital signal, obtaining measures of the digital signal respectively indicative of the frequency response of the digital signal at the plus and minus predetermined frequencies, and calculating the set of the correction parameters for the I/Q correction module based on the measures.

摘要翻译： 一种用于具有具有校正参数的I / Q校正模块的接收机的I / Q失配校准的方法，包括以下步骤：产生包含具有载波频率加上预定频率的频率的单音波形的测试信号，应用I / Q 解调以减小测试信号的中心频率并输出解调信号，将解调信号转换成数字信号，获得分别表示数字信号在正，负预定频率下的频率响应的数字信号的测量值，以及 基于这些措施计算I / Q校正模块的校正参数的集合。

公开(公告)号：US20050041754A1

公开(公告)日：2005-02-24

申请号：US10645107

申请日：2003-08-21

申请人： Kuo-Ming Wu ,  Mao-Ching Chiu ,  Jui-Hsi Cheng

发明人： Kuo-Ming Wu ,  Mao-Ching Chiu ,  Jui-Hsi Cheng

IPC分类号： H04L27/26 ,  H04L27/36 ,  H04L27/04

CPC分类号： H04L27/364 ,  H04L27/2626

摘要： A method for I/Q mismatch calibration of a transmitter. First, a discrete-time signal is generated. Next, a corrected signal based on the discrete-time signal and a set of correction parameters Ap and Bp is obtained. Next, the corrected signal is converted to an analog corrected signal. Next, I/Q modulation is applied to the analog corrected signal and outputs a modulated signal. Next, a first, second, and third desired component measures and a first, second, and third image component measures with the first, second and third sets of the correction parameters Ap and Bp are respectively obtained from the modulated signal. Next, a fourth and fifth set of correction parameters Ap and Bp are obtained based on the first, the second, and the third desired component measures as well as the first, the second, and the third image component measures. Next, a fourth desired component measure and a fourth image component measure with the fourth set of correction parameters Ap and Bp and a fifth desired component measure and a fifth image component measure with the fifth set of correction parameters Ap and Bp are obtained from the modulated signal. Finally, a final set of the correction parameters Ap and Bp are selected from the fourth and fifth sets of correction parameters.

摘要翻译： 一种用于发射机的I / Q不匹配校准的方法。 首先，产生离散时间信号。 接下来，获得基于离散时间信号的校正信号和一组校正参数Ap和Bp。 接下来，将校正后的信号转换为模拟校正信号。 接下来，将I / Q调制应用于模拟校正信号并输出​​调制信号。 接下来，分别从调制信号中获得第一，第二和第三期望分量测量值以及第一，第二和第三图像分量，其中第一，第二和第三组校正参数Ap和Bp分别获得。 接下来，基于第一，第二和第三期望分量测量以及第一，第二和第三图像分量测量获得第四和第五组校正参数Ap和Bp。 接下来，从调制的第二组校正参数Ap和Bp获得具有第四组校正参数Ap和Bp的第四所需分量测量和第四图像分量测量以及具有第五组校正参数Ap和Bp的第五所需分量测量值和第五图像分量测量值 信号。 最后，从第四组和第五组校正参数中选择最后一组校正参数Ap和Bp。

公开(公告)号：US07174146B2

公开(公告)日：2007-02-06

申请号：US10653300

申请日：2003-09-02

申请人： Kuo-Ming Wu ,  Jui-Hsi Cheng ,  Mao-Ching Chiu

发明人： Kuo-Ming Wu ,  Jui-Hsi Cheng ,  Mao-Ching Chiu

IPC分类号： H04B1/10

CPC分类号： H04L27/3863 ,  H04L27/2647

摘要： A method for I/Q mismatch calibration of a receiver having an I/Q correction module with correction parameters, comprising the steps of generating a test signal containing a single tone waveform with frequency of a carrier frequency plus a predetermined frequency, applying I/Q demodulation to reduce the central frequency of the test signal and outputting a demodulated signal, converting the demodulated signal to a digital signal, obtaining measures of the digital signal respectively indicative of the frequency response of the digital signal at the plus and minus predetermined frequencies, and calculating the set of the correction parameters for the I/Q correction module based on the measures.

摘要翻译： 一种用于具有具有校正参数的I / Q校正模块的接收机的I / Q失配校准的方法，包括以下步骤：产生包含具有载波频率加上预定频率的频率的单音波形的测试信号，应用I / Q 解调以减小测试信号的中心频率并输出解调信号，将解调信号转换成数字信号，获得分别表示数字信号在正，负预定频率下的频率响应的数字信号的测量值，以及 基于这些措施计算I / Q校正模块的校正参数的集合。

公开(公告)号：US07039132B1

公开(公告)日：2006-05-02

申请号：US09799802

申请日：2001-03-07

申请人： Hung-Kun Chen ,  Kwang-Cheng Chen ,  Jui-Hsi Cheng ,  Chung-Yen Huang

发明人： Hung-Kun Chen ,  Kwang-Cheng Chen ,  Jui-Hsi Cheng ,  Chung-Yen Huang

IPC分类号： H04L27/14 ,  H04L27/16 ,  H04L27/22

CPC分类号： H04L27/2271 ,  H04L25/03133 ,  H04L27/2017 ,  H04L2025/03477

摘要： This invention provides a method for bit detection of the GFSK signals at the receiver end. The bit detection is done digitally after the carrier is removed. It employs differential detection incorporated with decision feedback, which uses previous one (so-called on-bit differential detection), or two (so-called two-bit differential detection) bits as correcting information. In addition, synchronization for bit timing and frequency offset resulted from clocks between the transmitter and receiver are also performed with or without preamble as prior information. If preamble is available, the bit timing and frequency-offset bias are estimated from the preamble, which is the case of this present invention. If preamble is not available, this information is estimated directly from the unknown received signals. Once the information about the bit timing and frequency offset is obtained, it is used for the following bit detection.

摘要翻译： 本发明提供了一种用于在接收机端对GFSK信号进行比特检测的方法。 在移除载波后，数字地进行位检测。 它采用结合有使用前一个（所谓的位差分检测）或两个（所谓的2位差分检测）位作为校正信息的判定反馈的差分检测。 此外，由发送器和接收器之间的时钟产生的比特定时和频率偏移的同步也是作为先验信息执行的，具有或不具有前同步码。 如果前导码可用，则从前导码估计比特定时和频偏偏移，这是本发明的情况。 如果前导码不可用，则该信息直接从未知的接收信号估计。 一旦得到关于位定时和频率偏移的信息，它被用于以下位检测。

公开(公告)号：US20050159180A1

公开(公告)日：2005-07-21

申请号：US11063760

申请日：2005-02-23

申请人： Jui-Hsi Cheng ,  Tsung-Liang Lin

发明人： Jui-Hsi Cheng ,  Tsung-Liang Lin

IPC分类号： H04B1/40 ,  H04M11/04 ,  H04M1/00

CPC分类号： H04B1/0007 ,  H04B1/0003 ,  H04B1/406

摘要： A preferred embodiment of the invention advantageously provides a method for integrating a plurality of radio systems in a unified transceiver structure and the device of the same. According to this general embodiment of the invention, all components for the necessary communication protocols of a device are determined by selecting the operation ranges of the components and designing a mechanism to adjust the operation parameters of the shared components for conforming to the utilized communications system. Therefore, only one radio frequency (RF) module is required for a communications device having a plurality of communication systems. An end user can advantageously carry a single and compact wireless device for various communications systems.

摘要翻译： 本发明的优选实施例有利地提供了一种用于将多个无线电系统集成在统一收发机结构中的方法及其装置。 根据本发明的这个一般实施例，通过选择组件的操作范围和设计用于调整共享组件的操作参数以适应所使用的通信系统的机制来确定用于设备的必要通信协议的所有组件。 因此，对于具有多个通信系统的通信设备，仅需要一个射频（RF）模块。 终端用户可以有利地携带用于各种通信系统的单个且紧凑的无线设备。

公开(公告)号：US07088789B2

公开(公告)日：2006-08-08

申请号：US10298878

申请日：2002-11-18

申请人： Tai-Yuan Cheng ,  Yi-Huei Chen ,  Jui-Hsi Cheng ,  Tsung-Liang Lin ,  Shu-Ping Hsu

发明人： Tai-Yuan Cheng ,  Yi-Huei Chen ,  Jui-Hsi Cheng ,  Tsung-Liang Lin ,  Shu-Ping Hsu

IPC分类号： H03K9/00 ,  H03F3/45

CPC分类号： H04B1/406

摘要： An apparatus for providing a multi-mode interface between a baseband receiver and radio frequency (RF) circuitry. According to a preferred embodiment of the invention, the apparatus includes a first differential-to-single-ended converter, a second differential-to-single-ended converter and an analog-to-digital converter. The first differential-to-single-ended converter receives an incoming differential current pair to be converted into a first single-ended voltage signal. The second differential-to-single-ended converter receives an incoming differential voltage pair to be converted into a second single-ended voltage signal. Further, the analog-to-digital converter selectively receives an incoming single-ended voltage signal, the first single-ended voltage signal, or the second single-ended voltage signal to be converted into a digital signal to be further processed by the baseband processor. Note that the incoming single-ended voltage signal, as well as the incoming differential voltage and current signal pairs together form the multi-mode interface to the RF circuitry.

摘要翻译： 一种用于在基带接收机和射频（RF）电路之间提供多模式接口的装置。 根据本发明的优选实施例，该装置包括第一差分到单端转换器，第二差分到单端转换器和模数转换器。 第一个差分到单端转换器接收输入的差分电流对，以转换成第一个单端电压信号。 第二差分到单端转换器接收输入的差分电压对以转换成第二单端电压信号。 此外，模数转换器选择性地接收输入的单端电压信号，第一单端电压信号或第二单端电压信号，以转换为数字信号，以由基带处理器进一步处理 。 请注意，输入的单端电压信号以及输入的差分电压和电流信号对一起形成到RF电路的多模式接口。

公开(公告)号：US07430235B2

公开(公告)日：2008-09-30

申请号：US11350200

申请日：2006-02-08

申请人： Tai-Yuan Cheng ,  Yi-Huei Chen ,  Jui-Hsi Cheng ,  Tsung-Liang Lin ,  Shu-Ping Hsu

发明人： Tai-Yuan Cheng ,  Yi-Huei Chen ,  Jui-Hsi Cheng ,  Tsung-Liang Lin ,  Shu-Ping Hsu

IPC分类号： H04L25/00 ,  H03F3/45

CPC分类号： H04B1/406

摘要： An apparatus for providing a multi-mode interface between a baseband receiver and radio frequency (RF) circuitry. According to a preferred embodiment of the invention, the apparatus includes a first differential-to-single-ended converter, a second differential-to-single-ended converter and an analog-to-digital converter. The first differential-to-single-ended converter receives an incoming differential current pair to be converted into a first single-ended voltage signal. The second differential-to-single-ended converter receives an incoming differential voltage pair to be converted into a second single-ended voltage signal. Further, the analog-to-digital converter selectively receives an incoming single-ended voltage signal, the first single-ended voltage signal, or the second single-ended voltage signal to be converted into a digital signal to be further processed by the baseband processor. Note that the incoming single-ended voltage signal, as well as the incoming differential voltage and current signal pairs together form the multi-mode interface to the RF circuitry.

摘要翻译： 一种用于在基带接收机和射频（RF）电路之间提供多模式接口的装置。 根据本发明的优选实施例，该装置包括第一差分到单端转换器，第二差分到单端转换器和模数转换器。 第一个差分到单端转换器接收输入的差分电流对，以转换成第一个单端电压信号。 第二差分到单端转换器接收输入的差分电压对以转换成第二单端电压信号。 此外，模数转换器选择性地接收输入的单端电压信号，第一单端电压信号或第二单端电压信号，以转换为数字信号，以由基带处理器进一步处理 。 请注意，输入的单端电压信号以及输入的差分电压和电流信号对一起形成到RF电路的多模式接口。

公开(公告)号：US20060126758A1

公开(公告)日：2006-06-15

申请号：US11350200

申请日：2006-02-08

申请人： Tai-Yuan Cheng ,  Yi-Huei Chen ,  Jui-Hsi Cheng ,  Tsung-Liang Lin ,  Shu-Ping Hsu

发明人： Tai-Yuan Cheng ,  Yi-Huei Chen ,  Jui-Hsi Cheng ,  Tsung-Liang Lin ,  Shu-Ping Hsu

IPC分类号： H04L27/22

CPC分类号： H04B1/406

摘要： An apparatus for providing a multi-mode interface between a baseband receiver and radio frequency (RF) circuitry. According to a preferred embodiment of the invention, the apparatus includes a first differential-to-single-ended converter, a second differential-to-single-ended converter and an analog-to-digital converter. The first differential-to-single-ended converter receives an incoming differential current pair to be converted into a first single-ended voltage signal. The second differential-to-single-ended converter receives an incoming differential voltage pair to be converted into a second single-ended voltage signal. Further, the analog-to-digital converter selectively receives an incoming single-ended voltage signal, the first single-ended voltage signal, or the second single-ended voltage signal to be converted into a digital signal to be further processed by the baseband processor. Note that the incoming single-ended voltage signal, as well as the incoming differential voltage and current signal pairs together form the multi-mode interface to the RF circuitry.