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1. 发明授权

US08831079B2 Apparatus and method for detecting symbol rate 有权
标题翻译：用于检测符号率的装置和方法
公开(公告)号：US08831079B2
公开(公告)日：2014-09-09
申请号：US13565987
申请日：2012-08-03
申请人： Yi-Ying Liao , Tung-Sheng Lin , Tai-Lai Tung
发明人： Yi-Ying Liao , Tung-Sheng Lin , Tai-Lai Tung
IPC分类号： H04B3/46
CPC分类号： H04N5/4401 , H04L25/0262
摘要： A symbol rate detection apparatus includes an analog-to-digital converter (ADC), a coarse detection module, a mixer, a down-sampling module, and a fine detection module. The ADC converts an analog input signal to a digital input signal at an original sampling frequency. The coarse detection module estimates a carrier frequency offset and a coarse symbol rate according to the digital input signal. The mixer adjusts the frequency of the digital input signal according to the carrier frequency offset to generate a frequency-compensated signal. The fine detection module determines a fine symbol rate according to the frequency-compensated signal.
摘要翻译：符号率检测装置包括模数转换器（ADC），粗检测模块，混频器，下采样模块和精细检测模块。 ADC以原始采样频率将模拟输入信号转换为数字输入信号。粗略检测模块根据数字输入信号估计载波频率偏移和粗略符号率。混频器根据载波频率偏移调节数字输入信号的频率，以产生频率补偿信号。精细检测模块根据频率补偿信号确定精细符号率。

2. 发明申请

US20130279554A1 Apparatus and Method for Correcting Phase Error 有权
标题翻译：用于校正相位误差的装置和方法
公开(公告)号：US20130279554A1
公开(公告)日：2013-10-24
申请号：US13613207
申请日：2012-09-13
申请人： Kai-Wen Cheng , Yi-Ying Liao , Tung-Sheng Lin , Tai-Lai Tung
发明人： Kai-Wen Cheng , Yi-Ying Liao , Tung-Sheng Lin , Tai-Lai Tung
IPC分类号： H04L1/00
CPC分类号： H04L27/2272 , H04L2027/0055 , H04L2027/0067
摘要： An apparatus for correcting a phase error is provided. The apparatus includes an error estimating module and a correcting module. The error estimating module receives a phase-shift keying signal, and calculates a phase error according to the phase-shift keying signal, a plurality of known candidate signals and Bayesian estimation. The correcting module corrects the phase-shift keying signal according to the phase error.
摘要翻译：提供了一种用于校正相位误差的装置。该装置包括误差估计模块和校正模块。误差估计模块接收相移键控信号，并根据相移键控信号，多个已知候选信号和贝叶斯估计来计算相位误差。校正模块根据相位误差校正相移键控信号。

3. 发明授权

US09203677B2 Signal processing method and associated apparatus 有权
标题翻译：信号处理方法及相关装置
公开(公告)号：US09203677B2
公开(公告)日：2015-12-01
申请号：US13613182
申请日：2012-09-13
申请人： Chu-Hsin Chang , Kai-Wen Cheng , Yi-Ying Liao , Tung-Sheng Lin , Tai-Lai Tung
发明人： Chu-Hsin Chang , Kai-Wen Cheng , Yi-Ying Liao , Tung-Sheng Lin , Tai-Lai Tung
IPC分类号： H04L7/02 , H04L27/26 , H04L7/027 , H04L27/00
CPC分类号： H04L27/2666 , H04L7/027 , H04L2027/0026
摘要： A signal processing apparatus for receiving a spectral line of an original signal includes a starting point determining module, a searching module and a symbol rate determining module. The starting point determining module finds a maximum energy in the spectral line and determines at least one search starting point according to the maximum energy. From the at least one search starting point, the searching module searches along the spectral line towards a region with a lower energy for at least one minimum energy satisfying a predetermined condition. The symbol rate determining module determines a symbol rate of the original signal according to the at least one minimum energy.
摘要翻译：用于接收原始信号的谱线的信号处理装置包括起始点确定模块，搜索模块和符号率确定模块。起始点确定模块在频谱线中找到最大能量，并根据最大能量确定至少一个搜索起始点。从至少一个搜索起点，搜索模块沿着谱线搜索具有较低能量的区域，以满足满足预定条件的至少一个最小能量。符号率确定模块根据至少一个最小能量确定原始信号的符号率。

4. 发明授权

US08804877B2 Apparatus and method for correcting phase error 有权
标题翻译：校正相位误差的装置和方法
公开(公告)号：US08804877B2
公开(公告)日：2014-08-12
申请号：US13613207
申请日：2012-09-13
申请人： Kai-Wen Cheng , Yi-Ying Liao , Tung-Sheng Lin , Tai-Lai Tung
发明人： Kai-Wen Cheng , Yi-Ying Liao , Tung-Sheng Lin , Tai-Lai Tung
IPC分类号： H03D3/22
CPC分类号： H04L27/2272 , H04L2027/0055 , H04L2027/0067
摘要： An apparatus for correcting a phase error is provided. The apparatus includes an error estimating module and a correcting module. The error estimating module receives a phase-shift keying signal, and calculates a phase error according to the phase-shift keying signal, a plurality of known candidate signals and Bayesian estimation. The correcting module corrects the phase-shift keying signal according to the phase error.
摘要翻译：提供了一种用于校正相位误差的装置。该装置包括误差估计模块和校正模块。误差估计模块接收相移键控信号，并根据相移键控信号，多个已知候选信号和贝叶斯估计来计算相位误差。校正模块根据相位误差校正相移键控信号。

5. 发明授权

US08654669B2 Packet receiver and packet processing method thereof 有权
标题翻译：分组接收机及其分组处理方法
公开(公告)号：US08654669B2
公开(公告)日：2014-02-18
申请号：US13432103
申请日：2012-03-28
申请人： Yi-Ying Liao , Ko-Yin Lai , Wei-Hung Liu , Tung-Sheng Lin , Tai-Lai Tung
发明人： Yi-Ying Liao , Ko-Yin Lai , Wei-Hung Liu , Tung-Sheng Lin , Tai-Lai Tung
IPC分类号： H04L12/26
CPC分类号： H04N21/4305 , H04N21/44209
摘要： A packet processing method applied in a packet receiver is provided. An approximate bit rate is first determined according to time stamps of two different packets. The approximate bit rate is corrected according to a time stamp of another packet to generate a fine-tuned bit rate. According to the fine-tuned bit rate, one or more subsequent packets are read out from a buffer. The time stamp of a subsequent packet is provided according to the approximate bit rate.
摘要翻译：提供了一种应用在分组接收机中的分组处理方法。首先根据两个不同数据包的时间戳确定近似比特率。根据另一个分组的时间戳来校正近似比特率以产生微调比特率。根据微调比特率，从缓冲器读出一个或多个后续分组。根据近似比特率提供后续分组的时间戳。

6. 发明申请

US20130215950A1 APPARATUS AND METHOD FOR DETECTING SYMBOL RATE 有权
标题翻译：用于检测符号速率的装置和方法
公开(公告)号：US20130215950A1
公开(公告)日：2013-08-22
申请号：US13565987
申请日：2012-08-03
申请人： Yi-Ying Liao , Tung-Sheng Lin , Tai-Lai Tung
发明人： Yi-Ying Liao , Tung-Sheng Lin , Tai-Lai Tung
IPC分类号： H04B17/00
CPC分类号： H04N5/4401 , H04L25/0262
摘要： A symbol rate detection apparatus includes an analog-to-digital converter (ADC), a coarse detection module, a mixer, a down-sampling module, and a fine detection module. The ADC converts an analog input signal to a digital input signal at an original sampling frequency. The coarse detection module estimates a carrier frequency offset and a coarse symbol rate according to the digital input signal. The mixer adjusts the frequency of the digital input signal according to the carrier frequency offset to generate a frequency-compensated signal. The fine detection module determines a fine symbol rate according to the frequency-compensated signal.
摘要翻译：符号率检测装置包括模数转换器（ADC），粗检测模块，混频器，下采样模块和精细检测模块。 ADC以原始采样频率将模拟输入信号转换为数字输入信号。粗略检测模块根据数字输入信号估计载波频率偏移和粗略符号率。混频器根据载波频率偏移调节数字输入信号的频率，以产生频率补偿信号。精细检测模块根据频率补偿信号确定精细符号率。

7. 发明申请

US20130253867A1 Signal Processing Method and Associated Apparatus 有权
标题翻译：信号处理方法及相关装置
公开(公告)号：US20130253867A1
公开(公告)日：2013-09-26
申请号：US13613182
申请日：2012-09-13
申请人： Chu-Hsin Chang , Kai-Wen Cheng , Yi-Ying Liao , Tung-Sheng Lin , Tai-Lai Tung
发明人： Chu-Hsin Chang , Kai-Wen Cheng , Yi-Ying Liao , Tung-Sheng Lin , Tai-Lai Tung
IPC分类号： G01R23/16 , G06F19/00
CPC分类号： H04L27/2666 , H04L7/027 , H04L2027/0026
摘要： A signal processing apparatus for receiving a spectral line of an original signal includes a starting point determining module, a searching module and a symbol rate determining module. The starting point determining module finds a maximum energy in the spectral line and determines at least one search starting point according to the maximum energy. From the at least one search starting point, the searching module searches along the spectral line towards a region with a lower energy for at least one minimum energy satisfying a predetermined condition. The symbol rate determining module determines a symbol rate of the original signal according to the at least one minimum energy.
摘要翻译：用于接收原始信号的谱线的信号处理装置包括起始点确定模块，搜索模块和符号率确定模块。起始点确定模块在频谱线中找到最大能量，并根据最大能量确定至少一个搜索起始点。从至少一个搜索起点，搜索模块沿着谱线搜索具有较低能量的区域，以满足满足预定条件的至少一个最小能量。符号率确定模块根据至少一个最小能量确定原始信号的符号率。

8. 发明申请

US20130148518A1 PACKET RECEIVER AND PACKET PROCESSING METHOD THEREOF 有权
标题翻译：分组接收器和分组处理方法
公开(公告)号：US20130148518A1
公开(公告)日：2013-06-13
申请号：US13432103
申请日：2012-03-28
申请人： Yi-Ying Liao , Ko-Yin Lai , Wei-Hung Liu , Tung-Sheng Lin , Tai-Lai Tung
发明人： Yi-Ying Liao , Ko-Yin Lai , Wei-Hung Liu , Tung-Sheng Lin , Tai-Lai Tung
IPC分类号： H04W24/00
CPC分类号： H04N21/4305 , H04N21/44209
摘要： A packet processing method applied in a packet receiver is provided. An approximate bit rate is first determined according to time stamps of two different packets. The approximate bit rate is corrected according to a time stamp of another packet to generate a fine-tuned bit rate. According to the fine-tuned bit rate, one or more subsequent packets are read out from a buffer. The time stamp of a subsequent packet is provided according to the approximate bit rate.
摘要翻译：提供了一种应用在分组接收机中的分组处理方法。首先根据两个不同数据包的时间戳确定近似比特率。根据另一个分组的时间戳来校正近似比特率以产生微调比特率。根据微调比特率，从缓冲器读出一个或多个后续分组。根据近似比特率提供后续分组的时间戳。

9. 发明授权

US08675787B2 Circuit for detecting a predetermined symbol in a digital data stream and associated method 有权
标题翻译：用于检测数字数据流中的预定符号的电路和相关方法
公开(公告)号：US08675787B2
公开(公告)日：2014-03-18
申请号：US12728912
申请日：2010-03-22
申请人： Kai-Wen Cheng , Ko-Yin Lai , Yi-Ying Liao , Tai-Lai Tung
发明人： Kai-Wen Cheng , Ko-Yin Lai , Yi-Ying Liao , Tai-Lai Tung
IPC分类号： H04L27/06
CPC分类号： H04L27/2647
摘要： A circuit for detecting a predetermined symbol of a digital data stream includes a frequency shifter, a correlator, a filter and a decision unit. The frequency shifter performs inverse-frequency shifting upon a first data to generate a first frequency-shifted data. The correlator calculates correlation upon the first frequency-shifted data and a second data to generate a correlated data. The filter, coupled to the correlator, filters and the correlated data to generate a filtered correlated data according to a time-domain windowing length. The decision unit, coupled to the filter, determines the predetermined symbol from the digital data stream according to the filtered correlated data.
摘要翻译：用于检测数字数据流的预定符号的电路包括移频器，相关器，滤波器和判定单元。移频器对第一数据进行反频移位以产生第一频移数据。相关器计算第一频移数据的相关性和第二数据以产生相关数据。耦合到相关器的滤波器，滤波器和相关数据，以根据时域开窗长度生成经滤波的相关数据。耦合到滤波器的判定单元根据滤波的相关数据从数字数据流中确定预定符号。

10. 发明申请

US20100284478A1 Channel Estimating Apparatus and Method Thereof 有权
标题翻译：信道估计装置及方法
公开(公告)号：US20100284478A1
公开(公告)日：2010-11-11
申请号：US12769098
申请日：2010-04-28
申请人： Yi-Ying Liao , Chen-Yi Liu , Tai-Lai Tung
发明人： Yi-Ying Liao , Chen-Yi Liu , Tai-Lai Tung
IPC分类号： H04L27/28
CPC分类号： H04L27/2647 , H04L5/0048 , H04L25/0212 , H04L25/022 , H04L25/0224
摘要： A channel estimating technique is applied to an Orthogonal Frequency-Division Multiplexing (OFDM) communication system which receives a plurality of OFDM symbols. In one aspect, a channel estimating method includes performing Inverse Fast Fourier Transform (IFFT) with a second number of sampling points and a phase shift on each of preliminarily estimated frequency-domain channel responses including a first number of response values corresponding to each of the OFDM symbols, so as to obtain a first time-domain channel impulse response corresponding to each of the OFDM symbols, where the first number is lager than the second number. The method also generates a plurality of frequency-domain channel responses corresponding to the OFDM symbols according to the time-domain channel impulse responses.
摘要翻译：信道估计技术被应用于接收多个OFDM符号的正交频分复用（OFDM）通信系统。在一个方面，一种信道估计方法包括在预估的频域信道响应中的每一个上执行具有第二数量的采样点的逆快速傅立叶变换（IFFT）和相移，包括对应于每个采样点的第一数量的响应值 OFDM符号，以便获得对应于每个OFDM符号的第一时域信道脉冲响应，其中第一个数字比第二个数字大。该方法还根据时域信道脉冲响应产生对应于OFDM符号的多个频域信道响应。

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