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11. 发明授权

US08223861B2 Joint carrier synchronization and channel equalization method for OFDM systems 有权
标题翻译： OFDM系统的联合载波同步和信道均衡方法
公开(公告)号：US08223861B2
公开(公告)日：2012-07-17
申请号：US12585220
申请日：2009-09-09
申请人： Muh-Tian Shiue , Chih-Feng Wu , Chorng-Kuang Wang
发明人： Muh-Tian Shiue , Chih-Feng Wu , Chorng-Kuang Wang
IPC分类号： H04K1/10 , H04L27/00
CPC分类号： H04L27/2672 , H04L25/03273 , H04L27/266 , H04L2025/03414 , H04L2025/0377
摘要： A joint carrier synchronization and channel equalization method for OFDM systems, that is suitable for use in a receiver of said orthogonal frequency division multiplexer (OFDM) systems, comprising the following steps: firstly, receiving a reception signal sample of an OFDM symbol, and obtaining simultaneously a phase error and a gain error on each sub-channel in a frequency domain, through outputting a sub-channel signal on each said sub-channel in said frequency domain; next, obtaining an execution carrier frequency offset factor, an execution phase compensation factor, and an execution gain compensation factor based on said phase error and said gain error; and finally, eliminating a phase offset of said reception signal sample of a next symbol in a time domain based on said factors, and compensating a magnitude distortion and a phase distortion on each said sub-channel in said frequency domain for said reception signal of said next symbol.
摘要翻译：一种用于OFDM系统的联合载波同步和信道均衡方法，其适用于所述正交频分复用器（OFDM）系统的接收机，包括以下步骤：首先，接收OFDM符号的接收信号样本，并获得通过在所述频域中的每个所述子信道上输出子信道信号，同时在频域中的每个子信道上产生相位误差和增益误差; 接下来，基于所述相位误差和所述增益误差获得执行载波频率偏移因子，执行相位补偿因子和执行增益补偿因子; 并且最后，基于所述因素消除在时域中的下一个符号的所述接收信号样本的相位偏移，并且在所述频域的每个所述子信道上对所述第一信号的所述接收信号的所述接收信号补偿每个所述子信道的幅度失真和相位失真下一个符号。

12. 发明申请

US20070127563A1 On-line step-size calculation using signal power estimation and tone grouping of the frequency-domain equalizer for DMT-based transceiver 有权
标题翻译：使用基于DMT的收发器的频域均衡器的信号功率估计和音调分组的在线步长计算
公开(公告)号：US20070127563A1
公开(公告)日：2007-06-07
申请号：US11293139
申请日：2005-12-05
申请人： Chih-Feng Wu , Muh-Tian Shiue , Chorng-Kuang Wang , An-Yeu Wu
发明人： Chih-Feng Wu , Muh-Tian Shiue , Chorng-Kuang Wang , An-Yeu Wu
IPC分类号： H03H7/30 , H04B1/38
CPC分类号： H04L25/03159 , H04L2025/03414 , H04L2025/03687
摘要： An efficient method for calculating the step-sizes for a frequency-domain equalizer of a discrete-multitone communications system using signal power estimation and tone grouping (SPE-TG) while on-line. The SPE-TG method is used to calculate a plurality of subchannel step-sizes which are then stored in a lookup table. When on-line, the method uses signal power estimation to select step sizes for each tone, and uses these step sizes for frequency domain equalization. The SPE-TG method simplifies the calculations necessary for frequency domain equalization, thereby saving significant hardware and/or processing resources. The SPE-TG method is reliable and robust, and does not depend upon assumptions about the line, location, or channel.
摘要翻译：一种用于在线上使用信号功率估计和音调分组（SPE-TG）来计算离散多音通信系统的频域均衡器的步长的有效方法。 SPE-TG方法用于计算多个子信道步长，然后存储在查找表中。当在线时，该方法使用信号功率估计来选择每个音调的步长，并且使用这些步长来进行频域均衡。 SPE-TG方法简化了频域均衡所需的计算，从而节省了大量的硬件和/或处理资源。 SPE-TG方法是可靠和鲁棒的，不依赖于关于线路，位置或频道的假设。

13. 发明申请

US20080082152A1 Method of designing a multi-channel micro-electrical stimulation with an equivalent current source that works with an adiabatic baseband based on direct-carrier energy extraction 审中-公开
标题翻译：使用基于直接载波能量提取的绝热基带工作的等效电流源设计多通道微电刺激的方法
公开(公告)号：US20080082152A1
公开(公告)日：2008-04-03
申请号：US11541870
申请日：2006-10-02
申请人： Cihun-Siyong (Alex) Gong , Muh-Tian Shiue , Chun-Hsien Su , Yin Chang
发明人： Cihun-Siyong (Alex) Gong , Muh-Tian Shiue , Chun-Hsien Su , Yin Chang
IPC分类号： A61N1/04
CPC分类号： A61N1/0476 , A61N1/0408 , A61N1/08 , A61N1/36014 , A61N1/36017
摘要： A method of designing a multi-channel micro-electrical stimulation structure with an equivalent current source that works with an adiabatic baseband based on direct-carrier energy extraction matches with a baseband circuitry designed for energy recovery with the equivalent current source. A controllable pulse width modulation signal at the operating rate near to the carrier rate is used to implement the charge accumulation for the stimulation resolution on the time sequence axis. The design of equivalent current source may reduce the defects caused by a general D/A converter for full-scale stimulation resolution. Further, the adiabatic design is applied, so the redundant power consumption caused at the higher clock rate is minimized and, due to the switching current in the baseband circuitry significantly decreasing, only one voltage regulator circuit is required for the operation of analog and digital circuits that is imbedded into a chip, thereby more design cost being reduced.
摘要翻译：设计具有等效电流源的多通道微电刺激结构的方法，其基于直接载波能量提取与基于电路的能量回收设计的基带电路匹配。使用接近载波速率的工作速率的可控脉宽调制信号来实现时序轴上的刺激分辨率的电荷累积。等效电流源的设计可能会降低通用D / A转换器对全尺寸刺激分辨率造成的缺陷。此外，应用绝热设计，因此在较高时钟速率下引起的冗余功耗最小化，并且由于基带电路中的开关电流显着减小，模拟和数字电路的操作只需要一个电压调节器电路嵌入芯片中，从而降低了设计成本。

14. 发明申请

US20110249709A1 DHT-Based OFDM Transmitter and Receiver 审中-公开
标题翻译：基于DHT的OFDM发射机和接收机
公开(公告)号：US20110249709A1
公开(公告)日：2011-10-13
申请号：US12756232
申请日：2010-04-08
申请人： Muh-Tian Shiue , Chin-Kuo Jao , Syu-Siang Long , Chin-Long Wey
发明人： Muh-Tian Shiue , Chin-Kuo Jao , Syu-Siang Long , Chin-Long Wey
IPC分类号： H04B1/38 , H04L27/36
CPC分类号： H04L27/2649 , H04L25/03159 , H04L27/2637
摘要： A DHT-based OFDM transmitter and receiver use discrete Hartley transform to implement multicarrier transmission. A transmission terminal (or a receiving terminal) of a transmitter and receiver comprises two IDHT (or DHT) processors and a diagonal processing device. The two IDHT processors make the DHT-OFDM system transmit the 2D modulation signal to increase the bandwidth efficiency. The diagonal processing device is used to diagonalize the circulant channel matrix into discrete memoryless subchannels, and thus only one-tap frequency domain equalizer can compensate the channel effects. Besides, the proposed DHT-OFDM transmitter and receiver are also compatible with a conventional DFT-OFDM system, and they can flexibly works with the conventional DFT-OFDM transmitter and receiver.
摘要翻译：基于DHT的OFDM发射机和接收机使用离散哈特利变换实现多载波传输。发送器和接收器的发送终端（或接收终端）包括两个IDHT（或DHT）处理器和对角线处理装置。两个IDHT处理器使得DHT-OFDM系统发送2D调制信号以增加带宽效率。对角处理装置用于将循环信道矩阵对角化为离散无记忆子信道，因此只有一抽头频域均衡器可以补偿信道效应。此外，所提出的DHT-OFDM发射机和接收机也与传统的DFT-OFDM系统兼容，并且可以灵活地与传统的DFT-OFDM发射机和接收机一起使用。

15. 发明授权

US07545871B2 Discrete multi-tone system having DHT-based frequency-domain equalizer 有权
标题翻译：具有基于DHT的频域均衡器的离散多音系统
公开(公告)号：US07545871B2
公开(公告)日：2009-06-09
申请号：US11361374
申请日：2006-02-24
申请人： Chih-Feng Wu , Muh-Tian Shiue , Chorng-Kuang Wang , An-Yeu Wu
发明人： Chih-Feng Wu , Muh-Tian Shiue , Chorng-Kuang Wang , An-Yeu Wu
IPC分类号： H04L27/28 , H04B1/10
CPC分类号： H04L25/03159 , H04L27/2626 , H04L27/2647 , H04L2025/03414 , H04L2025/03617 , H04L2025/0377
摘要： A discrete multi-tone (DMT) communication system is provided herein, replacing the conventional inversed discrete Fourier transform (IDFT) and DFT with IDHT (together with the complex-to-real transformation) and a DHT alone respectively at the transmitting end and the receiving end. A DHT-based frequency-domain equalizer (FEQ) at the receiving end equalizes each of the 0-th to (N−1)-th DHT subchannels, where N is the number of point of the DHT. Finally, each of the 0-th to ( N 2 - 1 ) - th subchannels of the DMT system is obtained by combining the k-th and (N-k)-th subchannels of the DHT-based FEQ for k=0, 1, . . . , ( N 2 - 1 ) .
摘要翻译：本文提供了一种离散多音（DMT）通信系统，其代替传统的反向离散付里叶变换（IDFT）和IDHT（以及复数到实际变换）和DHT分别在发送端和接收端。在接收端的基于DHT的频域均衡器（FEQ）对第0至第（N-1）个DHT子信道中的每一个进行均衡，其中N是DHT的点数。最后，每个0到<数学id =“MATH-US-00001”num =“00001”> $（2-1通过将第k和（Nk）组合，获得DMT系统的子信道，获得）基于DHT的FEQ的子信道，k = 0,1，...。。。，（2-1）。$

16. 发明申请

US20070201574A1 Discrete multi-tone system having DHT-based frequency-domain equalizer 有权
标题翻译：具有基于DHT的频域均衡器的离散多音系统
公开(公告)号：US20070201574A1
公开(公告)日：2007-08-30
申请号：US11361374
申请日：2006-02-24
申请人： Chih-Feng Wu , Muh-Tian Shiue , Chorng-Kuang Wang , An-Yeu Wu
发明人： Chih-Feng Wu , Muh-Tian Shiue , Chorng-Kuang Wang , An-Yeu Wu
IPC分类号： H04L5/12 , H04B1/10
CPC分类号： H04L25/03159 , H04L27/2626 , H04L27/2647 , H04L2025/03414 , H04L2025/03617 , H04L2025/0377
摘要： A discrete multi-tone (DMT) communication system is provided herein, replacing the conventional inversed discrete Fourier transform (IDFT) and DFT with IDHT (together with the complex-to-real transformation) and a DHT alone respectively at the transmitting end and the receiving end. A DHT-based frequency-domain equalizer (FEQ) at the receiving end equalizes each of the 0-th to (N−1)-th DHT subchannels, where N is the number of point of the DHT. Finally, each of the 0-th to (N/2−1)-th subchannels of the DMT system is obtained by combining the k-th and (N-k)-th subchannels of the DHT-based FEQ for k=0, 1, . . . , (N/2−1).
摘要翻译：本文提供了一种离散多音（DMT）通信系统，其代替传统的反向离散付里叶变换（IDFT）和IDHT（以及复数到实际变换）和DHT分别在发送端和接收端。在接收端的基于DHT的频域均衡器（FEQ）对第0至第（N-1）个DHT子信道中的每一个进行均衡，其中N是DHT的点数。最后，通过组合基于DHT的FEQ的第k个和第（Nk）个子信道来获得DMT系统的第0至第（N / 2-1）个子信道中的每一个，用于k = 0,1 ，。。。，（N / 2-1）。

17. 发明申请

US20050053127A1 Equalizing device and method 审中-公开
标题翻译：均衡装置和方法
公开(公告)号：US20050053127A1
公开(公告)日：2005-03-10
申请号：US10883821
申请日：2004-07-06
申请人： Muh-Tian Shiue , Ching-Kae Tzou , Dong-Ming Chuang , Chih-Feng Wu
发明人： Muh-Tian Shiue , Ching-Kae Tzou , Dong-Ming Chuang , Chih-Feng Wu
IPC分类号： H03K5/159 , H04L25/03
CPC分类号： H04L25/03038 , H04L2025/03414 , H04L2025/03477 , H04L2025/03617
摘要： An equalizing device includes a first filter, a target filter, an error determining device coupled with the first filter and the target filter, and a coefficient processor coupled with the error determining device. The first filter has a first set of coefficients and processes input signals transmitted through a communication channel to reduce channel response. The target filter has a second set of coefficients and generates a target channel output. The error determining device then processes an output of the first filter and the target channel output to generate error signals. The coefficient processor maintains constant at least one coefficient of the first or the second sets of coefficients and updates the remaining coefficients of the first and the second sets of coefficients based on the error signals.
摘要翻译：均衡装置包括第一滤波器，目标滤波器，与第一滤波器和目标滤波器耦合的误差确定装置，以及与误差确定装置耦合的系数处理器。第一滤波器具有第一组系数并且处理通过通信信道发送的输入信号以减少信道响应。目标滤波器具有第二组系数并且产生目标通道输出。然后，误差确定装置处理第一滤波器和目标信道输出的输出以产生误差信号。系数处理器保持恒定的第一或第二组系数的至少一个系数，并且基于误差信号更新第一和第二组系数的剩余系数。

18. 发明授权

US5917351A Relay-race FLL/PLL high-speed timing acquisition device 失效
标题翻译：继电器比赛FLL / PLL高速定时采集装置
公开(公告)号：US5917351A
公开(公告)日：1999-06-29
申请号：US916139
申请日：1997-08-21
申请人： Muh-Tian Shiue , Chorng-Kuang Wang , Kuang-Hu Huang , Po-Chiun Huang
发明人： Muh-Tian Shiue , Chorng-Kuang Wang , Kuang-Hu Huang , Po-Chiun Huang
IPC分类号： H03L7/087 , H03L7/06
CPC分类号： H03L7/087
摘要： A relay-race FLL/PLL high-speed timing acquisition device according to the invention comprises a transition detector, a voltage controlled oscillator, a loop filter of PLL, a first lowpass filter, a 90.degree. phase shifter, a second lowpass filter, and a plurality of multipliers. In addition, this relay-race FLL/PLL high-speed timing acquisition device is characterized by further comprising a frequency delimiter which includes a highpass filter coupled to a first circuit, a second circuit coupled to the highpass filter, a third lowpass filter coupled to the second circuit, a Schmitt inverter coupled to the third lowpass filter, and a switch member coupled to the Schmitt inverter. The relay-race FLL/PLL high-speed timing acquisition device can obtain stable and high speed timing acquisition by means of the frequency delimiter.
摘要翻译：根据本发明的继电器比赛FLL / PLL高速定时获取装置包括转换检测器，压控振荡器，PLL的环路滤波器，第一低通滤波器，90°移相器，第二低通滤波器和多个乘法器。此外，该继电器比赛FLL / PLL高速定时获取装置的特征在于还包括频率分隔符，其包括耦合到第一电路的高通滤波器，耦合到高通滤波器的第二电路，耦合到第二电路，耦合到第三低通滤波器的施密特反相器和耦合到施密特反相器的开关构件。继电器FLL / PLL高速定时采集装置可以通过频率分隔器获得稳定和高速的定时采集。

19. 发明申请

US20080075197A1 AMPLITUDE SHIFT KEYING (ASK) DEMODULATION CIRCUIT BASED ON A SELF SAMPLE AS A BASIS APPLICATION IN AN ORGANISM IMPLANTATION MICROSYSTEM 失效
标题翻译： AMPLITUDE SHIFT KEYING（ASK）解调电路基于自身样品作为有机体植入微结构的基础应用
公开(公告)号：US20080075197A1
公开(公告)日：2008-03-27
申请号：US11464618
申请日：2006-08-15
申请人： Cihun-Siyong (Alex) Gong , Muh-Tian Shiue , Chang Yin , Su Chun-Hsien
发明人： Cihun-Siyong (Alex) Gong , Muh-Tian Shiue , Chang Yin , Su Chun-Hsien
IPC分类号： H04L27/04
CPC分类号： H04L27/06
摘要： An amplitude shift keying (ASK) demodulation circuit based on a self sample as a basis application in an organism implantation microsystem is a low-cost and high-performance ASK demodulation core, comprising a pulse shaper, a voltage scaler, a level contrastor, and a self-sampler for achievement of the demodulation core provided pretty digital features, and needs no passive resistor and capacitor, which may reduce the cost of design and prevent the problem with precision. Further, in the aspect of active point, the size of a transistor may be adjusted for variable control, and hence levels determined among modulation signals may be reduced to lower the complexity of voltage regulator in design.
摘要翻译：基于自身样本作为生物体注入微系统中的基础应用的幅度移位键控（ASK）解调电路是低成本和高性能的ASK解调核心，包括脉冲整形器，电压调节器，电平对比器和实现解调核心的自取样器提供了很好的数字特性，不需要无源电阻和电容器，这可能降低设计成本，并且精确地防止问题。此外，在有源点的方面，可以调节晶体管的尺寸用于可变控制，并且因此可以减小调制信号之间确定的电平，从而降低设计中稳压器的复杂性。

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