公开(公告)号：US07564927B2

公开(公告)日：2009-07-21

申请号：US11162831

申请日：2005-09-25

申请人： Kuo-Ming Wu ,  Der-Zheng Liu

发明人： Kuo-Ming Wu ,  Der-Zheng Liu

IPC分类号： H04L27/00

CPC分类号： H04L27/2657 ,  H04L2027/0026

摘要： A band averaging circuit and a related method for estimating a carrier frequency offset are applied in a multi-band multi-carrier communication system. A packet of the multi-band multi-carrier communication system is transmitted via a plurality of carriers. The band averaging circuit includes a frequency offset estimation unit for generating a plurality of carrier frequency offset ratios corresponding to the carriers according to a received packet; and a frequency offset adjustment circuit coupled to the frequency offset estimation unit for calculating a weighted average carrier frequency offset ratio according to carrier frequency offset ratios and comparison results of the carrier frequency offset ratios, and also for calculating a carrier frequency offset of each carrier according to the weighted average carrier frequency offset ratio and a center frequency of the carrier.

摘要翻译： 用于估计载波频率偏移的频带平均电路和相关方法被应用在多频带多载波通信系统中。 经由多个载波发送多频带多载波通信系统的分组。 频带平均电路包括：频率偏移估计单元，用于根据接收的分组产生对应于载波的多个载波频率偏移比; 以及频率偏移调整电路，其耦合到所述频率偏移估计单元，用于根据载波频率偏移比和所述载波频率偏移比的比较结果计算加权平均载波频率偏移比，并且还用于根据载波频率偏移比来计算每个载波的载波频率偏移 加权平均载波频率偏移比和载波的中心频率。

公开(公告)号：US20070127607A1

公开(公告)日：2007-06-07

申请号：US11465452

申请日：2006-08-18

申请人： Kuo-Ming Wu ,  Der-Zheng Liu ,  Kuang-Yu Yen

发明人： Kuo-Ming Wu ,  Der-Zheng Liu ,  Kuang-Yu Yen

IPC分类号： H04L27/06

CPC分类号： H04L27/2662 ,  H04B1/7183 ,  H04L27/2675

摘要： The present invention relates to a symbol acquisition apparatus and a method thereof. The method includes: determining a first boundary according to a first preamble symbol and generating a first confidence value according to signal quality of the first preamble symbol; determining a second boundary according to a second preamble symbol and generating a second confidence value according to signal quality of the second preamble symbol; and determining a symbol boundary from the first and the second boundaries according to the first and the second confidence values.

摘要翻译： 符号获取装置及其方法技术领域本发明涉及符号获取装置及其方法。 该方法包括：根据第一前导码符号确定第一边界，并根据第一前导符号的信号质量产生第一置信度值; 根据第二前导码符号确定第二边界，并根据第二前导符号的信号质量产生第二置信度值; 以及根据第一和第二置信度从第一边界和第二边界确定符号边界。

公开(公告)号：US20060215776A1

公开(公告)日：2006-09-28

申请号：US11307096

申请日：2006-01-23

申请人： Kuo-Ming Wu ,  Der-Zheng Liu

发明人： Kuo-Ming Wu ,  Der-Zheng Liu

IPC分类号： H04K1/10

CPC分类号： H04L27/2662 ,  H04L27/2675 ,  H04L27/2695

摘要： An apparatus and method for tracking a sampling clock are disclosed. The apparatus includes a compensating unit compensating phases of a first and a second received symbols according to a compensating signal and thereby generating a first and a second compensated symbols; a data removal module removing a first predetermined transmitted data from the first compensated symbol, and a second predetermined transmitted data from the second compensated symbol and thereby generating a first and a second data removal symbols; and a computing module generating a sampling clock offset according to the first and the second data removal symbols, and adjusting the sampling clock signal according to the sampling clock offset.

摘要翻译： 公开了一种跟踪采样时钟的装置和方法。 该装置包括：补偿单元，根据补偿信号补偿第一和第二接收符号的相位，从而生成第一和第二补偿符号; 从第一补偿符号去除第一预定发送数据的数据去除模块和来自第二补偿符号的第二预定发送数据，从而生成第一和第二数据去除符号; 以及计算模块，根据第一和第二数据去除符号生成采样时钟偏移量，并根据采样时钟偏移量调整采样时钟信号。

公开(公告)号：US20060029236A1

公开(公告)日：2006-02-09

申请号：US11161585

申请日：2005-08-09

申请人： Kuo-Ming Wu ,  Der-Zheng Liu

发明人： Kuo-Ming Wu ,  Der-Zheng Liu

IPC分类号： H03G5/00 ,  H04B3/14 ,  H01P9/00

CPC分类号： H04L25/03057 ,  H04B1/71637 ,  H04B1/719 ,  H04L2025/03414

摘要： An apparatus and a method for equalizing a received signal to generate an equalized signal are disclosed. The apparatus includes a channel estimator for generating a channel estimation value according to a preamble symbol in the received signal and for generating a channel response value according to the channel estimation value, an interference power estimation circuit for generating an interference power estimate according to a hard decision value, the channel response value, and the received signal, and an equalization circuit for equalizing the received signal according to the channel response value and the adjusted interference power estimate to generate the equalized signal. The hard decision value corresponds to the equalized signal.

摘要翻译： 公开了一种用于均衡接收信号以产生均衡信号的装置和方法。 该装置包括：信道估计器，用于根据接收信号中的前导码符号生成信道估计值，并根据信道估计值产生信道响应值;干扰功率估计电路，用于根据硬信号产生干扰功率估计 判定值，信道响应值和接收信号，以及用于根据信道响应值和调整后的干扰功率估计均衡接收信号以产生均衡信号的均衡电路。 硬判定值对应于均衡信号。

公开(公告)号：US07983324B2

公开(公告)日：2011-07-19

申请号：US11465452

申请日：2006-08-18

申请人： Kuo-Ming Wu ,  Der-Zheng Liu ,  Kuang-Yu Yen

发明人： Kuo-Ming Wu ,  Der-Zheng Liu ,  Kuang-Yu Yen

IPC分类号： H04B1/00

CPC分类号： H04L27/2662 ,  H04B1/7183 ,  H04L27/2675

摘要： The present invention relates to a symbol acquisition apparatus and a method thereof. The method includes: determining a first boundary according to a first preamble symbol and generating a first confidence value according to signal quality of the first preamble symbol; determining a second boundary according to a second preamble symbol and generating a second confidence value according to signal quality of the second preamble symbol; and determining a symbol boundary from the first and the second boundaries according to the first and the second confidence values.

摘要翻译： 符号获取装置及其方法技术领域本发明涉及符号获取装置及其方法。 该方法包括：根据第一前导码符号确定第一边界，并根据第一前导符号的信号质量产生第一置信度值; 根据第二前导码符号确定第二边界，并根据第二前导符号的信号质量产生第二置信度值; 以及根据第一和第二置信度从第一边界和第二边界确定符号边界。

公开(公告)号：US20050157812A1

公开(公告)日：2005-07-21

申请号：US10905757

申请日：2005-01-19

申请人： Der-Zheng Liu ,  Kuang-Yu Yen ,  Kuo-Ming Wu

发明人： Der-Zheng Liu ,  Kuang-Yu Yen ,  Kuo-Ming Wu

IPC分类号： H04K1/02 ,  H04L27/26

CPC分类号： H04L27/2623

摘要： An apparatus for reducing a peak-to-average-power ratio includes a clipping signal detector coupled to the original time domain signal for generating an ideal clipping signal according to the original time domain signal, a clipping signal reconstruction unit coupled to the clipping signal detector for generating an actual clipping signal according to the ideal clipping signal, and a signal clipper coupled to the original time domain signal and the clipping signal reconstruction unit for generating a clipped time domain signal.

摘要翻译： 用于降低峰均功率比的装置包括：耦合到原始时域信号的限幅信号检测器，用于根据原始时域信号产生理想的限幅信号;剪切信号重建单元，耦合到限幅信号检测器 用于根据理想的削波信号产生实际的削波信号，以及耦合到原始时域信号的信号限幅器和用于产生限幅时域信号的限幅信号重构单元。

公开(公告)号：US07864905B2

公开(公告)日：2011-01-04

申请号：US11161585

申请日：2005-08-09

申请人： Kuo-Ming Wu ,  Der-Zheng Liu

发明人： Kuo-Ming Wu ,  Der-Zheng Liu

IPC分类号： H04B1/10

CPC分类号： H04L25/03057 ,  H04B1/71637 ,  H04B1/719 ,  H04L2025/03414

摘要： An apparatus and a method for equalizing a received signal to generate an equalized signal are disclosed. The apparatus includes a channel estimator for generating a channel estimation value according to a preamble symbol in the received signal and for generating a channel response value according to the channel estimation value, an interference power estimation circuit for generating an interference power estimate according to a hard decision value, the channel response value, and the received signal, and an equalization circuit for equalizing the received signal according to the channel response value and the adjusted interference power estimate to generate the equalized signal. The hard decision value corresponds to the equalized signal.

摘要翻译： 公开了一种用于均衡接收信号以产生均衡信号的装置和方法。 该装置包括：信道估计器，用于根据接收信号中的前导码符号生成信道估计值，并根据信道估计值产生信道响应值;干扰功率估计电路，用于根据硬信号产生干扰功率估计 判定值，信道响应值和接收信号，以及用于根据信道响应值和调整后的干扰功率估计均衡接收信号以产生均衡信号的均衡电路。 硬判定值对应于均衡信号。

公开(公告)号：US07583740B2

公开(公告)日：2009-09-01

申请号：US11307096

申请日：2006-01-23

申请人： Kuo-Ming Wu ,  Der-Zheng Liu

发明人： Kuo-Ming Wu ,  Der-Zheng Liu

IPC分类号： H04K1/10

CPC分类号： H04L27/2662 ,  H04L27/2675 ,  H04L27/2695

摘要： An apparatus and method for tracking a sampling clock are disclosed. The apparatus includes a compensating circuit compensating phases of a first and a second received symbols according to a compensating signal and thereby generating a first and a second compensated symbols; a data removal circuit removing a first predetermined transmitted data from the first compensated symbol, and a second predetermined transmitted data from the second compensated symbol and thereby generating a first and a second data removal symbols; and a computing circuit generating a sampling clock offset according to the first and the second data removal symbols, and adjusting the sampling clock signal according to the sampling clock offset.

摘要翻译： 公开了一种跟踪采样时钟的装置和方法。 该装置包括补偿电路，根据补偿信号补偿第一和第二接收符号的相位，从而产生第一和第二补偿符号; 从第一补偿符号去除第一预定发送数据的数据去除电路和来自第二补偿符号的第二预定发送数据，从而生成第一和第二数据去除符号; 以及计算电路，根据第一和第二数据去除符号产生采样时钟偏移，并根据采样时钟偏移调整采样时钟信号。

公开(公告)号：US07848434B2

公开(公告)日：2010-12-07

申请号：US11161401

申请日：2005-08-02

申请人： Kuo-Ming Wu ,  Der-Zheng Liu

发明人： Kuo-Ming Wu ,  Der-Zheng Liu

IPC分类号： H04K1/10

CPC分类号： H04L25/0212 ,  H04L25/0232 ,  H04L27/2647

摘要： A channel estimator and a related method for smoothing channel responses of a multi-carrier system. The channel estimator includes a channel response computing circuit for computing at least one of a target channel estimation and a reference channel estimation by utilizing a computing algorithm, wherein the target channel estimation and the reference channel estimation corresponds to a sub-carrier channel respectively.

摘要翻译： 用于平滑多载波系统的信道响应的信道估计器和相关方法。 信道估计器包括通过利用计算算法来计算目标信道估计和参考信道估计中的至少一个的信道响应计算电路，其中目标信道估计和参考信道估计分别对应于子载波信道。

公开(公告)号：US20060067430A1

公开(公告)日：2006-03-30

申请号：US11162831

申请日：2005-09-25

申请人： Kuo-Ming Wu ,  Der-Zheng Liu

发明人： Kuo-Ming Wu ,  Der-Zheng Liu

IPC分类号： H03D3/00

CPC分类号： H04L27/2657 ,  H04L2027/0026

摘要： A band averaging circuit and a related method for estimating a carrier frequency offset are applied in a multi-band multi-carrier communication system. A packet of the multi-band multi-carrier communication system is transmitted via a plurality of carriers. The band averaging circuit includes a frequency offset estimation unit for generating a plurality of carrier frequency offset ratios corresponding to the carriers according to a received packet; and a frequency offset adjustment circuit coupled to the frequency offset estimation unit for calculating a weighted average carrier frequency offset ratio according to carrier frequency offset ratios and comparison results of the carrier frequency offset ratios, and also for calculating a carrier frequency offset of each carrier according to the weighted average carrier frequency offset ratio and a center frequency of the carrier.

摘要翻译： 用于估计载波频率偏移的频带平均电路和相关方法被应用在多频带多载波通信系统中。 经由多个载波发送多频带多载波通信系统的分组。 频带平均电路包括：频率偏移估计单元，用于根据接收的分组产生对应于载波的多个载波频率偏移比; 以及频率偏移调整电路，其耦合到所述频率偏移估计单元，用于根据载波频率偏移比和所述载波频率偏移比的比较结果计算加权平均载波频率偏移比，并且还用于根据载波频率偏移比来计算每个载波的载波频率偏移 加权平均载波频率偏移比和载波的中心频率。