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公开(公告)号：US10075202B2
公开(公告)日：2018-09-11
申请号：US15662728
申请日：2017-07-28
Applicant: MEDIATEK INC.
Inventor： Ming-Chou Wu , Dimitris Nalbantis , Qiang Zhou , Bernard Mark Tenbroek , Ting-Hsuan Kuo
CPC classification number: H04B1/0475 , G01R27/06 , H04B1/0458 , H04B17/103 , H04B17/12 , H04B17/19 , H04L27/12
Abstract: Methods and apparatus are provided for detection path design for reflection coefficient estimation. In one novel aspect, a hardware-based phase estimator estimates a phase shift between the forward path signal and the reverse path signal. In one embodiment, a data selector is used to pass only signals above a magnitude threshold. In another embodiment, a modified phase unwrap algorithm stores an unwrapping correction for subsequent samples and updates the stored unwrapping correction upon processing of each sample processed. In another novel aspect, mixed hardware and software solutions are used. In one embodiment, the reference signal and the detection signals are matched such that the modulation signal interference is removed. In some embodiments, one or two power detectors and a cross-correlator are used. In yet another embodiment, two detection measurement paths are used to obtain the reflection coefficient. In one embodiment, fractional timing offset is estimated to obtain the reflection coefficient.
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Patent Agency Ranking
公开(公告)号：US20170331503A1
公开(公告)日：2017-11-16
申请号：US15662728
申请日：2017-07-28
Applicant: MEDIATEK INC.
Inventor： Ming-Chou Wu , Dimitris Nalbantis , Qiang Zhou , Bernard Mark Tenbroek , Ting-Hsuan Kuo
CPC classification number: H04B1/0475 , G01R27/06 , H04B1/0458 , H04B17/103 , H04B17/12 , H04B17/19 , H04L27/12
Abstract: Methods and apparatus are provided for detection path design for reflection coefficient estimation. In one novel aspect, a hardware-based phase estimator estimates a phase shift between the forward path signal and the reverse path signal. In one embodiment, a data selector is used to pass only signals above a magnitude threshold. In another embodiment, a modified phase unwrap algorithm stores an unwrapping correction for subsequent samples and updates the stored unwrapping correction upon processing of each sample processed. In another novel aspect, mixed hardware and software solutions are used. In one embodiment, the reference signal and the detection signals are matched such that the modulation signal interference is removed. In some embodiments, one or two power detectors and a cross-correlator are used. In yet another embodiment, two detection measurement paths are used to obtain the reflection coefficient. In one embodiment, fractional timing offset is estimated to obtain the reflection coefficient.
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公开(公告)号：US09762267B2
公开(公告)日：2017-09-12
申请号：US15002089
申请日：2016-01-20
Applicant: MEDIATEK INC.
Inventor： Ming-Chou Wu , Dimitris Nalbantis , Qiang Zhou , Bernard Mark Tenbroek , Ting-Hsuan Kuo
CPC classification number: H04B1/0475 , G01R27/06 , H04B1/0458 , H04B17/103 , H04B17/12 , H04B17/19 , H04L27/12
Abstract: Methods and apparatus are provided for detection path design for reflection coefficient estimation. In one novel aspect, a hardware-based phase estimator estimates a phase shift between the forward path signal and the reverse path signal. In one embodiment, a data selector is used to pass only signals above a magnitude threshold. In another embodiment, a modified phase unwrap algorithm stores an unwrapping correction for subsequent samples and updates the stored unwrapping correction upon processing of each sample processed. In another novel aspect, mixed hardware and software solutions are used. In one embodiment, the reference signal and the detection signals are matched such that the modulation signal interference is removed. In some embodiments, one or two power detectors and a cross-correlator are used. In yet another embodiment, two detection measurement paths are used to obtain the reflection coefficient. In one embodiment, fractional timing offset is estimated to obtain the reflection coefficient.
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公开(公告)号：US20170104613A1
公开(公告)日：2017-04-13
申请号：US15385436
申请日：2016-12-20
Applicant: MediaTek, Inc.
Inventor： Balachander Narasimhan , Charles Chien , Qiang Zhou , Chih-Yuan Lin , Cheng-Chou Zhan , Bao-Chi Peng
CPC classification number: H04L25/03019 , G06K7/10118 , G06K7/10138 , G06K19/07 , G06K19/0723 , H04B1/00 , H04B5/0031 , H04B5/0037 , H04B5/0075 , H04L1/203 , H04W4/80
Abstract: An electronic device for a wireless communication system is described. The electronic device comprises: a receiver configured to receive a modulated signal on a communication channel; and a processor, coupled to the receiver and configured to: process the received modulated signal; identify a communication channel characteristic based on the processed received modulated signal; select an equalizer having a first set of equalization coefficients based on the identified communication channel characteristic, wherein the first set of equalization coefficients is selected from a plurality of equalization coefficients, each of the plurality of equalization coefficients being associated with different communication channel characteristics; equalize the processed received modulated signal on the communication channel using the selected equalizer; and detect the equalized received modulated signal.
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15.发明申请CALIBRATION METHOD FOR WIRELESS COMMUNICATION DEVICE AND ASSOCIATED CALIBRATION APPARATUS 审中-公开无线通信设备和相关校准设备的校准方法公开(公告)号：US20160294490A1
公开(公告)日：2016-10-06
申请号：US15015134
申请日：2016-02-04
Applicant: MEDIATEK INC.
Inventor： Qiang Zhou , Ming-Chou Wu , Ting-Hsuan Kuo , Chia-Sheng Peng , Bernard Mark Tenbroek
IPC: H04B17/21
Abstract: A calibration method is applied to a wireless communication device having a programmable tuner and a signal processing path. The calibration method includes at least the following steps: configuring the programmable tuner to have a plurality of different tuner states, wherein the signal processing path has a first end and a second end, and the programmable tuner is coupled to the second end; when the programmable tuner is configured to have one of the different tuner states, obtaining a measured reflection coefficient at the first end of the signal processing path; and calibrating mapping relationship between a reflection coefficient at the first end of the signal processing path and a reflection coefficient at the second end of the signal processing path according to the different tuner states and measured reflection coefficients associated with the different tuner states.
Abstract translation: 校准方法应用于具有可编程调谐器和信号处理路径的无线通信设备。 所述校准方法至少包括以下步骤：将所述可编程调谐器配置为具有多个不同的调谐器状态，其中所述信号处理路径具有第一端和第二端，并且所述可编程调谐器耦合到所述第二端; 当可编程调谐器被配置为具有不同调谐器状态之一时，在信号处理路径的第一端获得测量的反射系数; 以及根据与不同的调谐器状态相关联的不同的调谐器状态和测量的反射系数，校准信号处理路径的第一端的反射系数与信号处理路径的第二端的反射系数之间的映射关系。
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16.发明申请公开(公告)号：US20160261436A1
公开(公告)日：2016-09-08
申请号：US14990001
申请日：2016-01-07
Applicant: MediaTek, Inc.
Inventor： Balachander Narasimhan , Charles Chien , Qiang Zhou , Chih-Yuan Lin , Cheng-Chou Zhan , Bao-Chi Peng
CPC classification number: H04L25/03019 , G06K7/10118 , G06K7/10138 , G06K19/07 , G06K19/0723 , H04B1/00 , H04B5/0031 , H04B5/0037 , H04B5/0075 , H04L1/203 , H04W4/80
Abstract: An electronic device for a wireless communication system is described. The electronic device comprises: a receiver configured to receive a modulated signal on a communication channel; and a processor, coupled to the receiver and configured to: process the received modulated signal; identify a communication channel characteristic based on the processed received modulated signal; select an equalizer having a first set of equalization coefficients based on the identified communication channel characteristic, wherein the first set of equalization coefficients is selected from a plurality of equalization coefficients, each of the plurality of equalization coefficients being associated with different communication channel characteristics; equalize the processed received modulated signal on the communication channel using the selected equalizer; and detect the equalized received modulated signal.
Abstract translation: 描述了一种用于无线通信系统的电子设备。 该电子设备包括：被配置为在通信信道上接收调制信号的接收机; 以及处理器，耦合到所述接收器并且被配置为：处理所接收的调制信号; 基于经处理的接收调制信号识别通信信道特性; 基于所识别的通信信道特性，选择具有第一组均衡系数的均衡器，其中，从多个均衡系数中选择所述第一组均衡系数，所述多个均衡系数中的每一个均与不同的通信信道特性相关联; 使用所选择的均衡器对通信信道上的经处理的接收调制信号进行均衡; 并检测均衡的接收调制信号。
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