公开(公告)号：US08509361B2

公开(公告)日：2013-08-13

申请号：US12700623

申请日：2010-02-04

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

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

IPC: H03D1/00

CPC classification number: H04L27/06 ,  H04L27/22

Abstract: 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.

Abstract translation: 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

Applicant: Pansop Kim ,  Jeng-Hong Chen ,  Hsin-Hsiang Liu

Inventor： Pansop Kim ,  Jeng-Hong Chen ,  Hsin-Hsiang Liu

IPC: H04B17/00 ,  H04L27/14

CPC classification number: H04L27/22 ,  H04B17/336 ,  H04L25/06 ,  H04L27/2017

Abstract: 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.

Abstract translation: 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

Applicant: Jeng-Hong Chen ,  Wei-Chung Peng

Inventor： Jeng-Hong Chen ,  Wei-Chung Peng

IPC: H03D3/22 ,  H03B1/10

CPC classification number: H04L23/02 ,  H04B1/7105 ,  H04B1/7113 ,  H04B1/7115 ,  H04B1/712 ,  H04B2001/70935

Abstract: 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.

Abstract translation: 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

Applicant: Jeng-Hong Chen ,  Pansop Kim

Inventor： Jeng-Hong Chen ,  Pansop Kim

IPC: H04K1/10

CPC classification number: 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

Abstract: 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.

Abstract translation: 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：US08718207B2

公开(公告)日：2014-05-06

申请号：US13466848

申请日：2012-05-08

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

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

IPC: H04L27/08

CPC classification number: H04B1/109 ,  H04B2001/1045

Abstract: 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 (ACT) 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.

Abstract translation: 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（ACT）的相关信道干扰（ACT），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：US08259862B2

公开(公告)日：2012-09-04

申请号：US12637388

申请日：2009-12-14

Applicant: Wei-Chung Peng ,  Jeng-Hong Chen ,  Pansop Kim

Inventor： Wei-Chung Peng ,  Jeng-Hong Chen ,  Pansop Kim

IPC: H04L27/14

CPC classification number: H04L27/10 ,  H04L27/227 ,  H04L2027/0067

Abstract: A receiver capable of decoding a symbol based on information on a previous symbol, the symbol and a next symbol in a Gaussian frequency shift keying (GFSK) communication system is provided. The receiver includes a discriminator to generate a symbol for each bit in a bit sequence, a first lookup table (LUT) to store a number of bit patterns and mapping patterns, wherein each of the bit patterns is in the form of a set of consecutive bits in the bit sequence and corresponds to a respective one of the mapping patterns, and wherein each of the mapping patterns includes a set of entries and each of the entries results from an operation of attribute values at a sample time in the waveform of a symbol, a calculator to receive a set of consecutive symbols from the discriminator and calculate a distance value between the set of consecutive symbols and each of the mapping patterns, and a comparator to identify one of the mapping patterns with a minimum distance value by comparing among the distance values from the calculator.

Abstract translation: 提供一种能够基于高斯频移键控（GFSK）通信系统中的先前符号，符号和下一个符号的信息来解码符号的接收器。 接收机包括用于为比特序列中的每个比特生成符号的鉴别器，用于存储多个比特模式和映射模式的第一查找表（LUT），其中每个比特模式是一组连续的形式 比特序列中的比特并且对应于相应的一个映射模式，并且其中每个映射模式包括一组条目，并且每个条目由来自符号波形中的采样时间的属性值的操作产生 计算器，用于从鉴别器接收一组连续的符号，并计算连续符号集合与每个映射模式之间的距离值;以及比较器，用于通过比较各个映射模式之间的比较来识别具有最小距离值的映射模式之一 计算器的距离值。

公开(公告)号：US20110090944A1

公开(公告)日：2011-04-21

申请号：US12581418

申请日：2009-10-19

Applicant: Pansop KIM ,  Jeng-Hong Chen ,  Hsin-Hsiang Liu

Inventor： Pansop KIM ,  Jeng-Hong Chen ,  Hsin-Hsiang Liu

IPC: H04B17/00 ,  H04L27/14

CPC classification number: H04L27/22 ,  H04B17/336 ,  H04L25/06 ,  H04L27/2017

Abstract: 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.

Abstract translation: 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：US07593472B2

公开(公告)日：2009-09-22

申请号：US11244607

申请日：2005-10-06

Applicant: Jeng-Hong Chen ,  Pansop Kim

Inventor： Jeng-Hong Chen ,  Pansop Kim

IPC: H04K1/10

CPC classification number: 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

Abstract: System performance in wireless communication is improved by increasing diversity in time, space and frequency. In OFDM-based MIMO systems in which the number of antennas M is greater then the number of simultaneously transmitted OFDM symbols N, circulation transmissions according to the present invention improve signal diversity. In symbol-based circulation transmission, N antennas are chosen from the M available antennas to transmit the N OFDM symbols. In subcarrier-based circulation transmission, M output OFDM symbols are composed from the QAM-mappled samples of the N input OFDM symbols. These M output OFDM symbols are then transmitted from the M antennas simultaneously.

Abstract translation: 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。 在天线数M大于同时发送的OFDM符号数N的基于OFDM的MIMO系统中，根据本发明的循环传输提高了信号分集。 在基于符号的循环传输中，从M个可用天线中选择N个天线以发送N个OFDM符号。 在基于子载波的循环传输中，M个输出OFDM符号由N个输入OFDM符号的QAM映射样本组成。 然后从M个天线同时发送这些M个输出OFDM符号。

公开(公告)号：US20090175181A1

公开(公告)日：2009-07-09

申请号：US11971095

申请日：2008-01-08

Applicant: Pansop KIM ,  Jeng-Hong Chen

Inventor： Pansop KIM ,  Jeng-Hong Chen

IPC: H04J1/16

CPC classification number: H04L1/0025 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0031 ,  H04L1/20 ,  H04L27/38

Abstract: The present invention discloses an effective apparatus and method to measure the received signal quality for digital communication systems by measuring error vector measurement (EVM) with embedded EVM measurement block in receivers. The distinction of the present invention is that the EVMSIG and the EVMDATA are measured in the receiver for the SIGNAL fields and DATA fields, respectively. EVMSIG is a good indicator for one spatial stream and EVMDATA is a good indicator for current multiple streams. The receiver determines the optimum number of spatial data streams for feedback to the transmitter based on the combinations of EVMSIG and EVMDATA with or without other algorithms such as analysis on periodically requested sounding packet. The receiver also determines the optimum modulation and coding schemes for feedback based on the EVM measurements.

Abstract translation: 本发明公开了一种通过用接收机中的嵌入式EVM测量块测量误差矢量测量（EVM）来测量数字通信系统的接收信号质量的有效装置和方法。 本发明的区别在于分别在信号字段和数据字段的接收机中测量EVMSIG和EVMDATA。 EVMSIG是一个空间流的良好指标，EVMDATA是当前多个流的一个很好的指标。 基于EVMSIG和EVMDATA的组合，接收机确定用于反馈到发射机的空间数据流的最佳数量，其中有或没有其他算法，例如周期性请求的探测分组的分析。 接收机还基于EVM测量确定用于反馈的最佳调制和编码方案。

公开(公告)号：US20060018406A1

公开(公告)日：2006-01-26

申请号：US10532524

申请日：2003-10-03

Applicant: Ernest Chen ,  Jeng-Hong Chen ,  Kenneth Shum ,  Joungheon Oh

Inventor： Ernest Chen ,  Jeng-Hong Chen ,  Kenneth Shum ,  Joungheon Oh

IPC: H03K9/00

CPC classification number: H04H60/07 ,  H04B7/18523 ,  H04H20/51 ,  H04H40/90 ,  H04L27/183 ,  H04L27/3488

Abstract: 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.