公开(公告)号：US20060018406A1

公开(公告)日：2006-01-26

申请号：US10532524

申请日：2003-10-03

申请人： Ernest Chen ,  Jeng-Hong Chen ,  Kenneth Shum ,  Joungheon Oh

发明人： Ernest Chen ,  Jeng-Hong Chen ,  Kenneth Shum ,  Joungheon Oh

IPC分类号： H03K9/00

CPC分类号： H04H60/07 ,  H04B7/18523 ,  H04H20/51 ,  H04H40/90 ,  H04L27/183 ,  H04L27/3488

摘要： An apparatus and method for receiving layered modulation signals is disclosed. A typical method includes receiving a layered modulation signal including an upper layer signal and a lower layer signal, demodulating and decoding the upper layer signal from the received layered modulation signal, estimating an upper layer amplitude factor and an upper layer phase factor from the received layered modulation signal. A substantially ideal upper layer signal is reconstructed from the demodulated and decoded upper layer signal including matching an ideal amplitude and an ideal phase by applying the upper layer amplitude factor and the upper layer phase factor to the reconstructed ideal upper layer signal. Finally, the reconstructed ideal upper layer signal is subtracted from the received layered modulation signal to produce the lower layer signal for processing.

公开(公告)号：US07474710B2

公开(公告)日：2009-01-06

申请号：US10532524

申请日：2003-10-03

申请人： Ernest C. Chen ,  Jeng-Hong Chen ,  Kenneth Shum ,  Joungheon Oh

发明人： Ernest C. Chen ,  Jeng-Hong Chen ,  Kenneth Shum ,  Joungheon Oh

IPC分类号： H03K9/00

CPC分类号： H04H60/07 ,  H04B7/18523 ,  H04H20/51 ,  H04H40/90 ,  H04L27/183 ,  H04L27/3488

摘要： An apparatus and method for receiving layered modulation signals is disclosed. A typical method includes receiving a layered modulation signal including an upper layer signal and a lower layer signal, demodulating and decoding the upper layer signal from the received layered modulation signal, estimating an upper layer amplitude factor and an upper layer phase factor from the received layered modulation signal. A substantially ideal upper layer signal is reconstructed from the demodulated and decoded upper layer signal including matching an ideal amplitude and an ideal phase by applying the upper layer amplitude factor and the upper layer phase factor to the reconstructed ideal upper layer signal. Finally, the reconstructed ideal upper layer signal is subtracted from the received layered modulation signal to produce the lower layer signal for processing.

摘要翻译： 公开了一种用于接收分层调制信号的装置和方法。 一种典型的方法包括接收包括上层信号和下层信号的分层调制信号，从接收到的分层调制信号中解调和解码上层信号，从接收到的分层调制信号估计上层振幅因子和上层相位因子 调制信号。 通过将上层振幅因子和上层相位因子应用于重建的理想上层信号，从解调和解码的上层信号中重构理想的上层信号，包括理想幅度和理想相位的匹配。 最后，从接收到的分层调制信号中减去重建的理想上层信号，产生下层信号进行处理。

公开(公告)号：US08509361B2

公开(公告)日：2013-08-13

申请号：US12700623

申请日：2010-02-04

申请人： Jeng-Hong Chen ,  Pansop Kim ,  Hsin-Hsiang Liu ,  Hsin-Hsu Chi

发明人： Jeng-Hong Chen ,  Pansop Kim ,  Hsin-Hsiang Liu ,  Hsin-Hsu Chi

IPC分类号： H03D1/00

CPC分类号： H04L27/06 ,  H04L27/22

摘要： An acquisition scheme is provided for receiving a Bluetooth basic data rate (BDR) or enhanced data rate (EDR) packet. An acquisition apparatus for a Bluetooth receiver includes: a phase differentiator; a plurality of basic building blocks; a plurality of 1-bit switches; and a correlation computation equation. It features an acquisition circuit implementation with 1-bit correlator hardware shared by access code and EDR synchronization sequence correlation computations.

摘要翻译： 提供了用于接收蓝牙基本数据速率（BDR）或增强数据速率（EDR）分组的获取方案。 蓝牙接收机的采集装置包括：相位微分器; 多个基本构建块; 多个1位开关; 和相关计算方程。 它具有采用电路实现，具有由访问代码和EDR同步序列相关计算共享的1位相关器硬件。

公开(公告)号：US08243781B2

公开(公告)日：2012-08-14

申请号：US12581418

申请日：2009-10-19

申请人： Pansop Kim ,  Jeng-Hong Chen ,  Hsin-Hsiang Liu

发明人： Pansop Kim ,  Jeng-Hong Chen ,  Hsin-Hsiang Liu

IPC分类号： H04B17/00 ,  H04L27/14

CPC分类号： H04L27/22 ,  H04B17/336 ,  H04L25/06 ,  H04L27/2017

摘要： The present invention discloses an effective apparatus and method to measure the received signal quality for a GFSK modulated signal with (or without) an unknown modulation index. The signal quality measurements are based on the decoded (unknown or known) bits and the trellis of the frequency discriminator output. This trellis is pre-calibrated with a reference Rx. The transmitted modulation index is also accurately estimated in this invention.

摘要翻译： 本发明公开了一种测量具有（或不具有）未知调制指数的GFSK调制信号的接收信号质量的有效装置和方法。 信号质量测量基于解码（未知或已知）位和鉴频器输出的格架。 该格子用参考Rx进行预校准。 在本发明中也准确地估计发送的调制指数。

公开(公告)号：US07113553B2

公开(公告)日：2006-09-26

申请号：US10382756

申请日：2003-03-05

申请人： Jeng-Hong Chen ,  Wei-Chung Peng

发明人： Jeng-Hong Chen ,  Wei-Chung Peng

IPC分类号： H03D3/22 ,  H03B1/10

CPC分类号： H04L23/02 ,  H04B1/7105 ,  H04B1/7113 ,  H04B1/7115 ,  H04B1/712 ,  H04B2001/70935

摘要： A method is provided for mitigating the multipath interference experienced by a present CCK symbol. This method first obtains a set of initial candidates for the present CCK symbol and a set of initial candidates for the next CCK symbol based on the ICI-corrected correlation outputs for the present and next CCK symbols, respectively. The method then obtains, for each of the candidates for the present CCK symbol, first ISI-mitigated correlation outputs where both the ICI due to the present CCK symbol and the ISI due to the next CCK symbol have been corrected. Thereafter, for each of the candidates for the present CCK symbol, and based on the first ISI-mitigated correlation outputs, the method obtains second ISI-mitigated correlation outputs where the ISI due to the previous CCK symbol has also been corrected. The present CCK symbol is then decoded based on the second ISI-mitigated correlation outputs.

摘要翻译： 提供了一种用于减轻当前CCK符号经历的多路径干扰的方法。 该方法首先分别基于当前和下一个CCK符号的ICI校正的相关输出，获得针对当前CCK符号的一组初始候选和下一个CCK符号的一组初始候选。 然后，该方法针对当前CCK符号的每个候选者获得第一ISI减轻的相关输出，其中由于当前CCK符号引起的ICI和由于下一个CCK符号引起的ISI都被校正。 此后，对于当前CCK符号的每个候选，并且基于第一ISI减轻的相关输出，该方法获得第二ISI减轻的相关输出，其中由于先前的CCK符号导致的ISI也被校正。 然后基于第二ISI减轻的相关输出对当前的CCK符号进行解码。

公开(公告)号：US20060088115A1

公开(公告)日：2006-04-27

申请号：US11254359

申请日：2005-10-20

申请人： Jeng-Hong Chen ,  Pansop Kim

发明人： Jeng-Hong Chen ,  Pansop Kim

IPC分类号： H04K1/10

CPC分类号： H04L27/2602 ,  H03M13/23 ,  H03M13/2717 ,  H03M13/2757 ,  H03M13/276 ,  H03M13/31 ,  H03M13/655 ,  H04B7/0413 ,  H04L1/0059 ,  H04L1/0071 ,  H04L1/04 ,  H04L1/0606 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0064 ,  H04L5/0083 ,  H04L27/2626

摘要： System performance in wireless communication is improved by increasing diversity in time, space and frequency. Information to be transmitted is processed by a convolution encoder to produce encoded bits. The encoded bits are interleaved and mapped to subcarriers. Symbols are created from the subcarriers and the symbols are transmitted so as to increase diversity in time, space and frequency. Circulation transmission in addition to interleaving is used to increase diversity. For example, circulation transmission can be symbol based or subcarrier based.

摘要翻译： 通过增加时间，空间和频率的多样性，提高无线通信系统的性能。 要发送的信息由卷积编码器处理以产生编码比特。 编码比特被交织并映射到子载波。 从子载波产生符号，发送符号以增加时间，空间和频率的分集。 除了交错之外的循环传输用于增加分集。 例如，循环传输可以是基于符号或子载波的。

公开(公告)号：US08693595B2

公开(公告)日：2014-04-08

申请号：US13466884

申请日：2012-05-08

申请人： Jeng-Hong Chen ,  Peng-Sen Chen ,  Hsiang-Te Ho ,  Kuang-Hu Huang ,  Zhi-Qing Huang ,  Chin-Chang Chang

发明人： Jeng-Hong Chen ,  Peng-Sen Chen ,  Hsiang-Te Ho ,  Kuang-Hu Huang ,  Zhi-Qing Huang ,  Chin-Chang Chang

IPC分类号： H04L27/08

CPC分类号： H04B1/109 ,  H04B2001/1045

摘要： The present invention relates to an adaptive, cost-performance efficient, power-saving apparatus for wireless communication systems, such as but not limited to Bluetooth (BT) receivers, and in particular to a packet-based receiver's decoding algorithm which can detect the presence or absence of the adjacent channel interference (ACI) before the scheduled starting time for receiving a Bluetooth packet, and accordingly set the receiver configurations including the filter's pass-band bandwidth (BW), filter's order, the sampling rate, the number of analog-to-digital-converter (ADC) output bits, and the automatic-gain-control (AGC) algorithm unit to determine the low noise amplifier (LNA) and variable gain amplifier (VGA) settings.

摘要翻译： 本发明涉及用于诸如但不限于蓝牙（BT）接收机的无线通信系统的自适应的，性价比高的节能设备，特别涉及一种基于分组的接收机的解码算法，其可以检测存在 或者在用于接收蓝牙分组的预定开始时间之前不存在相邻信道干扰（ACI），并且相应地设置包括滤波器的通带带宽（BW），滤波器顺序，采样率，模拟 - 数字转换器（ADC）输出位和自动增益控制（AGC）算法单元来确定低噪声放大器（LNA）和可变增益放大器（VGA）设置。

公开(公告)号：US08437427B2

公开(公告)日：2013-05-07

申请号：US12569290

申请日：2009-09-29

申请人： Jeng-Hong Chen

发明人： Jeng-Hong Chen

IPC分类号： H03K9/00 ,  H04L27/001

CPC分类号： G06F1/022 ,  G06F1/0342

摘要： This invention describes a programmable, digital implementation to shift an arbitrary frequency, or various frequencies in various communication systems of the original signal in the frequency domain. The correspondent phase accumulation to perform the desired frequency shift per sampling instant is perfectly tracked by counting up or down a simple integer. Several arbitrary frequency shifters with different mathematical models are provided. The correspondent implementations with Look-Up-Tables (LUT) are derived for high-speed implementations without further calculations of the values of the sine and cosine functions every sampling instant. Furthermore, a simple shift-and-add phase rotation is described to replace the four required real multiplications. If the original complex signal contains only one-bit each from real part and imaginary part, a surprisingly simple implementation is derived and disclosed for the overall arbitrary frequency shift operation. Further simplifications are also disclosed to make this invention feasible for high sampling frequencies and small frequency drifts.

摘要翻译： 本发明描述了一种可编程的数字实现，以在频域中移动原始信号的各种通信系统中的任意频率或各种频率。 通过向上或向下计数一个简单的整数来完美地跟踪每个采样时刻执行所需频移的通讯相位累加。 提供了具有不同数学模型的几个任意频率移位器。 具有查找表（LUT）的通信实现被导出用于高速实现，而不需要在每个采样时刻进一步计算正弦和余弦函数的值。 此外，描述了简单的移位和加法相位旋转来代替四个所需的实数乘法。 如果原始复信号仅包含来自实部和虚部的一位，则导出并公开了用于总体任意频移操作的令人惊讶的简单实现。 还公开了进一步简化以使本发明对于高采样频率和小的频率漂移是可行的。

公开(公告)号：US20120288042A1

公开(公告)日：2012-11-15

申请号：US13466848

申请日：2012-05-08

申请人： Jeng-Hong Chen ,  Peng-Sen Chen ,  Hsiang-Te Ho ,  Kuang-Hu Huang ,  Zhi-Qing Huang ,  Chin-Chang Chang

发明人： Jeng-Hong Chen ,  Peng-Sen Chen ,  Hsiang-Te Ho ,  Kuang-Hu Huang ,  Zhi-Qing Huang ,  Chin-Chang Chang

IPC分类号： H04L27/08

CPC分类号： H04B1/109 ,  H04B2001/1045

摘要： The present invention relates to an adaptive, high cost-performance efficient, and power-saving receiving method used for wireless communication systems, such as but not limited to Bluetooth (BT) system, in particular to a method which can detect the presence or absence of the adjacent channel interference (ACI) before the scheduled starting time for receiving a Bluetooth packet, and accordingly set the receiver configurations including the filter's pass-band bandwidth (BW), filter's order, the sampling rate or the number of analog-to-digital-converter (ADC) output bits, and the automatic-gain-control (AGC) algorithm to determine the low noise amplifier (LNA) and variable gain amplifier (VGA) settings

摘要翻译： 本发明涉及一种用于诸如但不限于蓝牙（BT）系统的无线通信系统的自适应的，高性价比的高效率和省电接收方法，特别涉及一种可以检测存在或不存在的方法 在接收蓝牙分组的预定开始时间之前的相邻信道干扰（ACI），并且相应地设置包括滤波器的通带带宽（BW），滤波器顺序，采样率或模拟 - 数字转换器（ADC）输出位和自动增益控制（AGC）算法来确定低噪声放大器（LNA）和可变增益放大器（VGA）设置

公开(公告)号：US08300736B2

公开(公告)日：2012-10-30

申请号：US12581607

申请日：2009-10-19

申请人： Pansop Kim ,  Jeng-Hong Chen ,  Hsin-Hsiang Liu

发明人： Pansop Kim ,  Jeng-Hong Chen ,  Hsin-Hsiang Liu

IPC分类号： H04L27/00

CPC分类号： H04L27/0014 ,  H04L27/2277 ,  H04L2027/0032 ,  H04L2027/0061 ,  H04L2027/0067

摘要： The present invention discloses a method and apparatus to provide, effectively and robustly, a phase reference in phase-domain for digital phase-modulated signals. Not only the first-order but also higher order PLLs are delineated for robust and fast tracking of frequency errors and time-varying frequency errors between the transmitter and the receiver. This invention can be applied to any phase-modulated signal such as PSK, DPSK, π/4-DPSK, and CPM. The decoders with this invention can achieve close to the performance of coherent detection.Reference[1] D. Divsalar and M. K. Simon, “Multiple-symbols differential detection of MPSK,” IEEE Trans. Commun., vol. 38, pp. 300-308, March 1990.[2] Specification of the Bluetooth System, 2.0+EDR, 4 Nov. 2004.

摘要翻译： 本发明公开了一种在数字相位调制信号的相域中有效且鲁棒地提供相位参考的方法和装置。 不仅描述了一阶但是更高阶的PLL，以便在发射机和接收机之间的频率误差和时变频率误差的鲁棒和快速跟踪。 本发明可以应用于诸如PSK，DPSK，＆amp; / 4-DPSK和CPM之类的任何相位调制信号。 本发明的解码器可以实现接近相干检测的性能。 参考文献[1] D. Divsalar和M.K.Simon，Multiple-symbols differential detection of MPSK，IEEE Trans。 Commun。，vol。 38，pp。300-308，March 1990. [2]蓝牙系统规范，2.0 + EDR，2004年11月4日。