公开(公告)号：US20170134190A1

公开(公告)日：2017-05-11

申请号：US15415918

申请日：2017-01-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Reza Hoshyar ,  Kevin Zheng ,  Nirmal Warke ,  Wenting Zhou ,  Ali Kiaei ,  Ahmad Bahai

IPC: H04L25/03

CPC classification number: H04L25/03057 ,  H04L7/0004 ,  H04L7/0016 ,  H04L7/0087 ,  H04L7/033 ,  H04L7/0331 ,  H04L7/042 ,  H04L25/03019 ,  H04L25/03261 ,  H04L25/03267 ,  H04L25/03885 ,  H04L27/01 ,  H04L27/34 ,  H04L2025/03363 ,  H04L2025/03484 ,  H04L2025/0349 ,  H04L2025/03636

Abstract: A Continuous Time Linear Equalizer (CTLE) and a method of operating a CTLE in a receiver for a Pulse Amplitude Modulation (PAM) signal are disclosed. The method includes initiating equalization using an initial equalization setting that is optimized to meet a first objective and responsive to a determination, shifting to a final equalization setting that is optimized to meet a second objective.

公开(公告)号：US09479366B2

公开(公告)日：2016-10-25

申请号：US14686343

申请日：2015-04-14

Applicant: Texas Instruments Incorporated

Inventor： Kevin Zheng ,  Reza Hoshyar ,  Nirmal Warke ,  Ali Kiaei ,  Ahmad Bahai

IPC: H04L25/03 ,  G06F17/17

CPC classification number: H04L25/03057 ,  H04L7/0004 ,  H04L7/0016 ,  H04L7/0087 ,  H04L7/033 ,  H04L7/0331 ,  H04L7/042 ,  H04L25/03019 ,  H04L25/03261 ,  H04L25/03267 ,  H04L25/03885 ,  H04L27/01 ,  H04L27/34 ,  H04L2025/03363 ,  H04L2025/03484 ,  H04L2025/0349 ,  H04L2025/03636

Abstract: A method for adapting a mixed signal Infinite Impulse Response (IIR) Decision Feedback Equalizer (DFE) using pivot taps and monitor taps is disclosed. The method includes, for a given IIR path for a received signal, updating gain of the given IIR path using a respective pivot tap error-data correlation with a first Least Mean Square (LMS) update equation; and updating a time constant of the given IIR path using a respective monitor tap error-data correlation with a second LMS update equation.

Abstract translation: 公开了使用枢轴抽头和监视器抽头来适应混合信号无限脉冲响应（IIR）判决反馈均衡器（DFE）的方法。 该方法包括对于给定的接收信号的IIR路径，使用与第一最小均方（LMS）更新方程的相应的枢轴抽头误差 - 数据相关性来更新给定IIR路径的增益; 以及使用与第二LMS更新方程相关的监视抽头误差 - 数据相关性来更新给定IIR路径的时间常数。

公开(公告)号：US20160218889A1

公开(公告)日：2016-07-28

申请号：US14686343

申请日：2015-04-14

Applicant: Texas Instruments Incorporated

Inventor： Kevin Zheng ,  Reza Hoshyar ,  Nirmal Warke ,  Ali Kiaei ,  Ahmad Bahai

IPC: H04L25/03 ,  H04L25/02

CPC classification number: H04L25/03057 ,  H04L7/0004 ,  H04L7/0016 ,  H04L7/0087 ,  H04L7/033 ,  H04L7/0331 ,  H04L7/042 ,  H04L25/03019 ,  H04L25/03261 ,  H04L25/03267 ,  H04L25/03885 ,  H04L27/01 ,  H04L27/34 ,  H04L2025/03363 ,  H04L2025/03484 ,  H04L2025/0349 ,  H04L2025/03636

Abstract: A method for adapting a mixed signal Infinite Impulse Response (IIR) Decision Feedback Equalizer (DFE) using pivot taps and monitor taps is disclosed. The method includes, for a given IIR path for a received signal, updating gain of the given IIR path using a respective pivot tap error-data correlation with a first Least Mean Square (LMS) update equation; and updating a time constant of the given IIR path using a respective monitor tap error-data correlation with a second LMS update equation.

Abstract translation: 公开了使用枢轴抽头和监视器抽头来适应混合信号无限脉冲响应（IIR）判决反馈均衡器（DFE）的方法。 该方法包括对于给定的接收信号的IIR路径，使用与第一最小均方（LMS）更新方程的相应的枢轴抽头误差 - 数据相关性来更新给定IIR路径的增益; 以及使用与第二LMS更新方程相关的监视抽头误差 - 数据相关性来更新给定IIR路径的时间常数。

公开(公告)号：US20160218859A1

公开(公告)日：2016-07-28

申请号：US14686203

申请日：2015-04-14

Applicant: Texas Instruments Incorporated

Inventor： Reza Hoshyar ,  Kevin Zheng ,  Nirmal Warke ,  Ali Kiaei ,  Ahmad Bahai

IPC: H04L7/04 ,  H04L25/03 ,  H04L7/00

CPC classification number: H04L25/03057 ,  H04L7/0004 ,  H04L7/0016 ,  H04L7/0087 ,  H04L7/033 ,  H04L7/0331 ,  H04L7/042 ,  H04L25/03019 ,  H04L25/03261 ,  H04L25/03267 ,  H04L25/03885 ,  H04L27/01 ,  H04L27/34 ,  H04L2025/03363 ,  H04L2025/03484 ,  H04L2025/0349 ,  H04L2025/03636

Abstract: A device and method for providing clock data recovery (CDR) in a receiver is disclosed. The method comprises receiving a Phase Amplitude Modulation (PAM) signal; on startup, using a non-return-to-zero (NRZ)-based phase frequency detector (PFD) to acquire signal frequency from the received PAM signal; and responsive to a determination, switching to a PAM phase detector (PD) for steady state operation.

Abstract translation: 公开了一种用于在接收机中提供时钟数据恢复（CDR）的设备和方法。 该方法包括接收相位调制（PAM）信号; 在启动时，使用不归零（NRZ）的相位频率检测器（PFD）从接收到的PAM信号中获取信号频率; 并且响应于确定，切换到用于稳态操作的PAM相位检测器（PD）。

公开(公告)号：US09397824B1

公开(公告)日：2016-07-19

申请号：US14686203

申请日：2015-04-14

Applicant: Texas Instruments Incorporated

Inventor： Reza Hoshyar ,  Kevin Zheng ,  Nirmal Warke ,  Ali Kiaei ,  Ahmad Bahai

IPC: H04L27/00 ,  H04L7/04 ,  H04L7/00 ,  H04L25/03

CPC classification number: H04L25/03057 ,  H04L7/0004 ,  H04L7/0016 ,  H04L7/0087 ,  H04L7/033 ,  H04L7/0331 ,  H04L7/042 ,  H04L25/03019 ,  H04L25/03261 ,  H04L25/03267 ,  H04L25/03885 ,  H04L27/01 ,  H04L27/34 ,  H04L2025/03363 ,  H04L2025/03484 ,  H04L2025/0349 ,  H04L2025/03636

Abstract: A device and method for providing clock data recovery (CDR) in a receiver is disclosed. The method comprises receiving a Phase Amplitude Modulation (PAM) signal; on startup, using a non-return-to-zero (NRZ)-based phase frequency detector (PFD) to acquire signal frequency from the received PAM signal; and responsive to a determination, switching to a PAM phase detector (PD) for steady state operation.

Abstract translation: 公开了一种用于在接收机中提供时钟数据恢复（CDR）的设备和方法。 该方法包括接收相位调制（PAM）信号; 在启动时，使用不归零（NRZ）的相位频率检测器（PFD）从接收到的PAM信号中获取信号频率; 并且响应于确定，切换到用于稳态操作的PAM相位检测器（PD）。

公开(公告)号：US09083571B2

公开(公告)日：2015-07-14

申请号：US14145471

申请日：2013-12-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Reza Hoshyar ,  Anuj Batra ,  Timothy Mark Schmidl

IPC: H04B1/10 ,  H04L25/02 ,  H04L27/26

CPC classification number: H04L25/0202 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/023 ,  H04L27/26 ,  H04L27/2601

Abstract: A device for updating complex channel gain estimates for orthogonal frequency division multiplexed (OFDM) symbols that includes a receiver to receive a plurality of OFDM symbols, wherein each OFDM symbol includes a plurality of pilot tones at a subset of odd positions and a finite impulse response (FIR) filter. The FIR filter configured to filter a plurality of initial channel estimates of odd tones of an OFDM symbol using a first set of coefficients to generate an updated estimate of the channel estimates of the plurality of odd tones for that OFDM symbol, and filter the plurality of the initial channel estimates of the odd tones of the OFDM symbol using a second set of coefficients to generate estimates for a plurality of initial channel estimates of even tones for that OFDM symbol.

Abstract translation: 一种用于更新用于正交频分复用（OFDM）符号的复信道增益估计的装置，其包括用于接收多个OFDM符号的接收机，其中每个OFDM符号包括在奇数位置的子集处的多个导频音调和有限脉冲响应 （FIR）滤波器。 FIR滤波器被配置为使用第一组系数来过滤OFDM符号的奇数音调的多个初始信道估计，以生成用于该OFDM符号的多个奇音调的信道估计的更新估计，并且对多个 使用第二组系数的OFDM符号的奇数音调的初始信道估计来生成用于该OFDM符号的偶数个音调的多个初始信道估计的估计。