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1. 发明申请

US20090220035A1 APPARATUS FOR EQUALIZING CHANNEL IN FREQUENCY DOMAIN AND METHOD THEREFOR 失效
标题翻译：用于使频域中的频道均衡的装置及其方法
公开(公告)号：US20090220035A1
公开(公告)日：2009-09-03
申请号：US12088040
申请日：2005-12-26
申请人： Sung-Ik Park , Seung-Won Kim , Soo-In Lee , Sang-Won Son , You-Seok Lee , Hyoung-Nam Kim
发明人： Sung-Ik Park , Seung-Won Kim , Soo-In Lee , Sang-Won Son , You-Seok Lee , Hyoung-Nam Kim
IPC分类号： H04L27/01
CPC分类号： H04L25/03159 , H04L25/0212
摘要： Provided is an apparatus for channel equalization in frequency domain, including: a channel estimation unit for estimating a channel on received signal from outside, a channel matched filter for changing channel characteristic of the channel estimated by the channel estimation unit and the received signal to channel characteristic to meet condition required for noncausal filtering, a noncausal filter for changing the channel characteristic changed by the channel matched filter from nonminimum phase channel to minimum phase channel, a reverse channel calculation unit for calculating a reverse of the channel changed by the non-causal filter in frequency domain, and a frequency domain equalization unit for performing channel equalization with respect to the channel changed by the noncausal filter in the frequency domain by using the reverse obtained by the reverse channel calculation unit as coefficients of the frequency domain equalization apparatus.
摘要翻译：提供了一种频域信道均衡的装置，包括：信道估计单元，用于估计来自外部的接收信号的信道，用于改变由信道估计单元估计的信道的信道特性的信道匹配滤波器，以及接收的信道到信道满足非因果滤波所需条件的特征，用于将由信道匹配滤波器改变的信道特性改变为非最小相位信道的非因果滤波器，用于计算由非因果变换的信道的反向的反向信道计算单元滤波器，以及频域均衡单元，用于通过使用由反向信道计算单元获得的反向作为频域均衡装置的系数，对频域中的非因果滤波器改变的信道进行信道均衡。

2. 发明授权

US08170089B2 Apparatus for equalizing channel in frequency domain and method therefor 失效
标题翻译：用于均衡频域信道的装置及其方法
公开(公告)号：US08170089B2
公开(公告)日：2012-05-01
申请号：US12088040
申请日：2005-12-26
申请人： Sung-Ik Park , Seung-Won Kim , Soo-In Lee , Sang-Won Son , You-Seok Lee , Hyoung-Nam Kim
发明人： Sung-Ik Park , Seung-Won Kim , Soo-In Lee , Sang-Won Son , You-Seok Lee , Hyoung-Nam Kim
IPC分类号： H03H7/30
CPC分类号： H04L25/03159 , H04L25/0212
摘要： Provided is an apparatus for channel equalization in frequency domain, including: a channel estimation unit for estimating a channel on received signal from outside, a channel matched filter for changing channel characteristic of the channel estimated by the channel estimation unit and the received signal to channel characteristic to meet condition required for noncausal filtering, a noncausal filter for changing the channel characteristic changed by the channel matched filter from nonminimum phase channel to minimum phase channel, a reverse channel calculation unit for calculating a reverse of the channel changed by the noncausal filter in frequency domain, and a frequency domain equalization unit for performing channel equalization with respect to the channel changed by the noncausal filter in the frequency domain by using the reverse obtained by the reverse channel calculation unit as coefficients of the frequency domain equalization apparatus.
摘要翻译：提供了一种频域信道均衡的装置，包括：信道估计单元，用于估计来自外部的接收信号的信道，用于改变由信道估计单元估计的信道的信道特性的信道匹配滤波器，以及接收的信道到信道特征为满足非因果滤波所需的条件，用于将由信道匹配滤波器改变的信道特性改变为非最小相位信道的非因果滤波器，用于计算由非因果滤波器改变的信道的反向的反向信道计算单元，频域均衡单元，用于通过使用由反向信道计算单元获得的反相作为频域均衡装置的系数，对频域中的非因果滤波器改变的信道进行信道均衡。

3. 发明授权

US07974335B2 Apparatus for equalizing decision feedback based on channel properties change and method therefor 失效
标题翻译：基于信道特性变化来均衡决策反馈的装置及其方法
公开(公告)号：US07974335B2
公开(公告)日：2011-07-05
申请号：US12089657
申请日：2005-12-26
申请人： Sung-Ik Park , Seung-Won Kim , Soo-In Lee , Hyoung-Nam Kim , You-Seok Lee
发明人： Sung-Ik Park , Seung-Won Kim , Soo-In Lee , Hyoung-Nam Kim , You-Seok Lee
IPC分类号： H03H7/30 , H03H7/40 , H03K5/159
CPC分类号： H04L25/03057 , H04B3/04 , H04L25/0212 , H04L2025/0349 , H04L2025/03617
摘要： A decision feedback equalization apparatus includes a channel estimation unit estimating a channel on received signal based on the received signal and a training sequence; a channel matched filter maximizing SNR from the channel estimated by the channel estimation unit changing channel characteristics of the received signal; a noncausal filter approximating the changed channel; an equalizer input signal storage unit storing received symbols passed through the channel matched and the noncausal filters; a channel equalization unit performing a decision feedback equalization; a Trellis decoder detecting symbol from a channel-equalized signal; a mode selection unit selecting a specific mode; an error signal calculator comparing an output signal of the selected mode with an output signal of the channel equalization unit to calculate an error signal; and a tap coefficient updater updating tap coefficients to the channel equalization unit, an output signal from the storage unit, and an output signal from the Trellis decoder.
摘要翻译：判定反馈均衡装置包括：信道估计单元，基于接收信号和训练序列估计接收信号上的信道; 信道匹配滤波器，使由信道估计单元所估计的信道的信噪比最大化，改变接收信号的信道特性; 近似改变的信道的非因果滤波器; 均衡器输入信号存储单元，存储通过所述通道匹配的接收符号和非因果滤波器; 执行判决反馈均衡的信道均衡单元; 网格解码器从信道均衡信号检测符号; 选择特定模式的模式选择单元; 误差信号计算器，将所选择的模式的输出信号与所述信道均衡单元的输出信号进行比较，以计算误差信号; 抽头系数更新器更新抽头系数到信道均衡单元，来自存储单元的输出信号和来自网格解码器的输出信号。

4. 发明申请

US20100074320A1 APPARATUS FOR EQUALIZING DECISION FEEDBACK BASED ON CHANNEL PROPERTIES CHANGE AND METHOD THEREFOR 失效
标题翻译：基于通道特性的决策反馈均衡设备变更及其方法
公开(公告)号：US20100074320A1
公开(公告)日：2010-03-25
申请号：US12089657
申请日：2005-12-26
申请人： Sung-Ik Park , Seung-Won Kim , Soo-In Lee , Hyoung-Nam Kim , You-Seok Lee
发明人： Sung-Ik Park , Seung-Won Kim , Soo-In Lee , Hyoung-Nam Kim , You-Seok Lee
IPC分类号： H04L27/01
CPC分类号： H04L25/03057 , H04B3/04 , H04L25/0212 , H04L2025/0349 , H04L2025/03617
摘要： Provided is a decision feedback equalization apparatus including a channel estimation unit for estimating a channel on received signal based on the received signal and a training sequence; a channel matched filter for maximizing SNR from the channel estimated by the channel estimation unit to change channel characteristic of the received signal; a noncausal filter for approximating the channel changed by the channel matched filter from nonminimum phase channel to minimum phase channel; an equalizer input signal storage unit for storing received symbols passed through the channel matched filter and the noncausal filter; a channel equalization unit for performing a decision feedback equalization through filtering of a signal passed through the channel matched filter and the noncausal filter; a Trellis decoder for detecting symbol from a signal channel-equalized by the channel equalization unit; a mode selection unit for selecting a specific mode; an error signal calculator for comparing an output signal of the mode selected by the mode selection unit with an output signal of the channel equalization unit to calculate an error signal; and a tap coefficient updater for updating tap coefficients to the channel equalization unit by using the error signal from the error signal calculator, an output signal from the storage unit, and an output signal from the Trellis decoder.
摘要翻译：提供了一种判决反馈均衡装置，包括：信道估计单元，用于基于接收信号和训练序列估计接收信号上的信道; 信道匹配滤波器，用于使来自由信道估计单元估计的信道的SNR最大化，以改变接收信号的信道特性; 用于近似由信道匹配滤波器从非最小相位信道改变到最小相位信道的信道的非因果滤波器; 均衡器输入信号存储单元，用于存储通过信道匹配滤波器和非因果滤波器的接收符号; 信道均衡单元，用于通过对通过信道匹配滤波器和非因果滤波器的信号进行滤波来执行判决反馈均衡; 用于从信道均衡单元均衡的信道中检测符号的网格解码器; 模式选择单元，用于选择特定模式; 误差信号计算器，用于将由模式选择单元选择的模式的输出信号与信道均衡单元的输出信号进行比较，以计算误差信号; 以及抽头系数更新器，用于通过使用来自误差信号计算器的误差信号，来自存储单元的输出信号和来自网格解码器的输出信号来更新抽头系数到信道均衡单元。

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