公开(公告)号：US07860177B2

公开(公告)日：2010-12-28

申请号：US11846521

申请日：2007-08-28

申请人： Tai-Cheng Liu ,  Hsuan-Yu Liu ,  Po-Yuen Cheng

发明人： Tai-Cheng Liu ,  Hsuan-Yu Liu ,  Po-Yuen Cheng

IPC分类号： H04K1/10 ,  H04J11/00

CPC分类号： H04L25/022 ,  H04L25/03828 ,  H04L27/2647

摘要： A receiver for receiving a target signal complying with a specific communication specification comprising a specific spectrum characteristic includes a detecting module for detecting a packet of an input signal, a transforming unit for transforming the packet from a time domain to a frequency domain to derive a spectrum characteristic of the input signal, and a determining unit for determining whether the input signal is the target signal according to the spectrum characteristic of the input signal. Therefore, the proposed receiver is able to reduce packet miss rate and false alarm rate while robust to a severe channel condition, and achieve fast and accurate signal quality detection.

摘要翻译： 用于接收符合包括特定频谱特性的特定通信规范的目标信号的接收机包括用于检测输入信号分组的检测模块，用于将分组从时域变换到频域的变换单元，以导出频谱 输入信号的特性;以及确定单元，用于根据输入信号的频谱特性确定输入信号是否为目标信号。 因此，所提出的接收机能够在恶劣的信道条件下稳定地降低分组丢失率和误报率，并且实现快速准确的信号质量检测。

公开(公告)号：US07715511B2

公开(公告)日：2010-05-11

申请号：US11624705

申请日：2007-01-19

申请人： Po-Yuen Cheng

发明人： Po-Yuen Cheng

IPC分类号： H04L7/00 ,  H04J3/06

CPC分类号： H04L7/042 ,  H04L27/2656 ,  H04L27/2675

摘要： A frame synchronization method is disclosed. The method comprises correlating a stream with a pattern to generate a correlated result c(t). A first peak and a second peak are selected from the correlated result c(t), wherein the first peak is the peak with highest amplitude, and the second peak is the peak occurring later than the first peak with the second highest amplitude. The peak ratio of the two peaks is computed, and the position of the frame boundary is determined according to the ratio.

摘要翻译： 公开了一种帧同步方法。 该方法包括将流与模式相关联以生成相关结果c（t）。 从相关结果c（t）中选择第一峰值和第二峰值，其中第一峰值是具有最高幅度的峰值，并且第二峰值是出现在具有第二高幅度的第一峰值之后的峰值。 计算两个峰值的峰值比，并根据该比率确定帧边界的位置。

公开(公告)号：US08891350B2

公开(公告)日：2014-11-18

申请号：US12459720

申请日：2009-07-06

申请人： I-Kang Fu ,  Po-Yuen Cheng ,  Pei-Kai Liao

发明人： I-Kang Fu ,  Po-Yuen Cheng ,  Pei-Kai Liao

IPC分类号： H04J11/00 ,  H04W4/00 ,  H04L5/00 ,  H04L27/26

CPC分类号： H04W72/0453 ,  H04J11/00 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0039 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/03343 ,  H04L25/03821 ,  H04L27/2626 ,  H04L27/2646 ,  H04L27/2666 ,  H04W72/02

摘要： A method of data transmission over guard sub-carriers is provided in a multi-carrier OFDM system. Adjacent radio frequency (RF) carriers are used to carry radio signals transmitted through adjacent frequency channels. A plurality of guard sub-carriers between adjacent frequency channels are aligned and identified for data transmission in a pre-defined physical resource unit. The identified guard sub-carriers do not overlap with normal data sub-carriers of the radio signals transmitted through the adjacent frequency channels. At least one of the identified guard sub-carriers is reserved as NULL sub-carrier. A flexible multi-carrier transceiver architecture is also provided in a multi-carrier OFDM system. Different multi-carrier and/or MIMO/SISO data transmission schemes are implemented by adaptively reconfigure same hardware modules including common MAC layer module, physical layer entities, and RF entities. Furthermore, the flexible multi-carrier transceiver architecture can be used to support data transmission over guard sub-carriers.

摘要翻译： 在多载波OFDM系统中提供了一种在保护子载波上进行数据传输的方法。 相邻射频（RF）载波用于携带通过相邻频道传输的无线电信号。 在预定义的物理资源单元中，对齐和识别相邻频道之间的多个保护子载波用于数据传输。 所识别的保护子载波不与通过相邻频道发送的无线电信号的正常数据子载波重叠。 所确定的保护子载波中的至少一个被保留为空子载波。 在多载波OFDM系统中还提供灵活的多载波收发器架构。 通过自适应地重新配置包括公共MAC层模块，物理层实体和RF实体的相同硬件模块来实现不同的多载波和/或MIMO / SISO数据传输方案。 此外，灵活的多载波收发器架构可以用于支持保护子载波上的数据传输。

公开(公告)号：US20100166093A1

公开(公告)日：2010-07-01

申请号：US12346886

申请日：2008-12-31

申请人： Shang-Ho Tsai ,  Hsiao-Lan Chiang ,  Hsuan-Yu Liu ,  Po-Yuen Cheng

发明人： Shang-Ho Tsai ,  Hsiao-Lan Chiang ,  Hsuan-Yu Liu ,  Po-Yuen Cheng

IPC分类号： H04L1/02

CPC分类号： H04L27/2657 ,  H04B7/0413 ,  H04L1/0606 ,  H04L1/0631 ,  H04L1/20 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/03159 ,  H04L27/2675 ,  H04L27/2695 ,  H04L2025/03414 ,  H04L2027/0067 ,  H04L2027/0087

摘要： A method for estimating a phase error existing in a receiver of a MIMO OFDM communications system is disclosed. The method includes executing Hermitian transpose on channel coefficient matrix of the MIMO OFDM communications system for generating Hermitian-transposed channel coefficient matrix, multiplying received signal matrix of the receiver with the Hermitian-transposed channel coefficient matrix for generating converted signals, summing products of the converted signals and complex conjugates of pilot signals corresponding to the converted signals for generating a sum result, and generating the phase error according to the sum result, the converted signals, and the complex conjugates of the pilot signals. The pilot signals are extracted from the received signal matrix.

摘要翻译： 公开了一种用于估计存在于MIMO OFDM通信系统的接收机中的相位误差的方法。 该方法包括对MIMO OFDM通信系统的信道系数矩阵执行Hermitian转置，以产生Hermitian转置信道系数矩阵，将接收机的接收信号矩阵与Hermitian转置信道系数矩阵相乘以产生转换信号，将转换后的乘积求和 信号和与转换信号相对应的导频信号的复共轭，用于产生和结果，并根据求和结果，转换信号和导频信号的复共轭产生相位误差。 从接收信号矩阵中提取导频信号。

公开(公告)号：US20100002675A1

公开(公告)日：2010-01-07

申请号：US12459720

申请日：2009-07-06

申请人： I-Kang Fu ,  Po-Yuen Cheng ,  Pei-Kai Liao

发明人： I-Kang Fu ,  Po-Yuen Cheng ,  Pei-Kai Liao

IPC分类号： H04J1/00 ,  H04L27/28

CPC分类号： H04W72/0453 ,  H04J11/00 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0039 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/03343 ,  H04L25/03821 ,  H04L27/2626 ,  H04L27/2646 ,  H04L27/2666 ,  H04W72/02

摘要： A method of data transmission over guard sub-carriers is provided in a multi-carrier OFDM system. Adjacent radio frequency (RF) carriers are used to carry radio signals transmitted through adjacent frequency channels. A plurality of guard sub-carriers between adjacent frequency channels are aligned and identified for data transmission in a pre-defined physical resource unit. The identified guard sub-carriers do not overlap with normal data sub-carriers of the radio signals transmitted through the adjacent frequency channels. At least one of the identified guard sub-carriers is reserved as NULL sub-carrier. A flexible multi-carrier transceiver architecture is also provided in a multi-carrier OFDM system. Different multi-carrier and/or MIMO/SISO data transmission schemes are implemented by adaptively reconfigure same hardware modules including common MAC layer module, physical layer entities, and RF entities. Furthermore, the flexible multi-carrier transceiver architecture can be used to support data transmission over guard sub-carriers.

摘要翻译： 在多载波OFDM系统中提供了一种在保护子载波上进行数据传输的方法。 相邻射频（RF）载波用于携带通过相邻频道传输的无线电信号。 在预定义的物理资源单元中，对齐和识别相邻频道之间的多个保护子载波用于数据传输。 所识别的保护子载波不与通过相邻频道发送的无线电信号的正常数据子载波重叠。 所确定的保护子载波中的至少一个被保留为空子载波。 在多载波OFDM系统中还提供灵活的多载波收发器架构。 通过自适应地重新配置包括公共MAC层模块，物理层实体和RF实体的相同硬件模块来实现不同的多载波和/或MIMO / SISO数据传输方案。 此外，灵活的多载波收发器架构可以用于支持保护子载波上的数据传输。

公开(公告)号：US20100202570A1

公开(公告)日：2010-08-12

申请号：US12764990

申请日：2010-04-22

申请人： Shang-Ho Tsai ,  Hsiao-Lan Chiang ,  Hsuan-Yu Liu ,  Po-Yuen Cheng

发明人： Shang-Ho Tsai ,  Hsiao-Lan Chiang ,  Hsuan-Yu Liu ,  Po-Yuen Cheng

IPC分类号： H04L27/06

CPC分类号： H04L27/2657 ,  H04B7/0413 ,  H04L1/0606 ,  H04L1/0631 ,  H04L1/20 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/03159 ,  H04L27/2675 ,  H04L27/2695 ,  H04L2025/03414 ,  H04L2027/0067 ,  H04L2027/0087

摘要： A method for estimating a phase error existing in a receiver of a MIMO OFDM communications system is disclosed. The method includes executing Hermitian transpose on channel coefficient matrix of the MIMO OFDM communications system for generating Hermitian-transposed channel coefficient matrix, multiplying received signal matrix of the receiver with the Hermitian-transposed channel coefficient matrix for generating converted signals, summing products of the converted signals and complex conjugates of pilot signals corresponding to the converted signals for generating a sum result, and generating the phase error according to the sum result, the converted signals, and the complex conjugates of the pilot signals. The pilot signals are extracted from the received signal matrix.

摘要翻译： 公开了一种用于估计存在于MIMO OFDM通信系统的接收机中的相位误差的方法。 该方法包括对MIMO OFDM通信系统的信道系数矩阵执行Hermitian转置，以产生Hermitian转置信道系数矩阵，将接收机的接收信号矩阵与Hermitian转置信道系数矩阵相乘以产生转换信号，将转换后的乘积求和 信号和与转换信号相对应的导频信号的复共轭，用于产生和结果，并根据求和结果，转换信号和导频信号的复共轭产生相位误差。 从接收信号矩阵中提取导频信号。

公开(公告)号：US07733975B1

公开(公告)日：2010-06-08

申请号：US12346886

申请日：2008-12-31

申请人： Shang-Ho Tsai ,  Hsiao-Lan Chiang ,  Hsuan-Yu Liu ,  Po-Yuen Cheng

发明人： Shang-Ho Tsai ,  Hsiao-Lan Chiang ,  Hsuan-Yu Liu ,  Po-Yuen Cheng

IPC分类号： H04B7/08 ,  H04L27/28

CPC分类号： H04L27/2657 ,  H04B7/0413 ,  H04L1/0606 ,  H04L1/0631 ,  H04L1/20 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/03159 ,  H04L27/2675 ,  H04L27/2695 ,  H04L2025/03414 ,  H04L2027/0067 ,  H04L2027/0087

摘要： A method for estimating a phase error existing in a receiver of a MIMO OFDM communications system is disclosed. The method includes executing Hermitian transpose on channel coefficient matrix of the MIMO OFDM communications system for generating Hermitian-transposed channel coefficient matrix, multiplying received signal matrix of the receiver with the Hermitian-transposed channel coefficient matrix for generating converted signals, summing products of the converted signals and complex conjugates of pilot signals corresponding to the converted signals for generating a sum result, and generating the phase error according to the sum result, the converted signals, and the complex conjugates of the pilot signals. The pilot signals are extracted from the received signal matrix.

公开(公告)号：US20090060006A1

公开(公告)日：2009-03-05

申请号：US11846521

申请日：2007-08-28

申请人： Tai-Cheng Liu ,  Hsuan-Yu Liu ,  Po-Yuen Cheng

发明人： Tai-Cheng Liu ,  Hsuan-Yu Liu ,  Po-Yuen Cheng

IPC分类号： H04B1/707

CPC分类号： H04L25/022 ,  H04L25/03828 ,  H04L27/2647

摘要： A receiver for receiving a target signal complying with a specific communication specification comprising a specific spectrum characteristic includes a detecting module for detecting a packet of an input signal, a transforming unit for transforming the packet from a time domain to a frequency domain to derive a spectrum characteristic of the input signal, and a determining unit for determining whether the input signal is the target signal according to the spectrum characteristic of the input signal. Therefore, the proposed receiver is able to reduce packet miss rate and false alarm rate while robust to a severe channel condition, and achieve fast and accurate signal quality detection.

摘要翻译： 用于接收符合包括特定频谱特性的特定通信规范的目标信号的接收机包括用于检测输入信号分组的检测模块，用于将分组从时域变换到频域的变换单元，以导出频谱 输入信号的特性;以及确定单元，用于根据输入信号的频谱特性确定输入信号是否为目标信号。 因此，所提出的接收机能够在恶劣的信道条件下稳定地降低分组丢失率和误报率，并且实现快速准确的信号质量检测。

公开(公告)号：US07697533B2

公开(公告)日：2010-04-13

申请号：US11751076

申请日：2007-05-21

申请人： Shang-Ho Tsai ,  Shih-Chung Yin ,  Po-Yuen Cheng ,  Chung-Yen Huang

发明人： Shang-Ho Tsai ,  Shih-Chung Yin ,  Po-Yuen Cheng ,  Chung-Yen Huang

IPC分类号： H04L12/56

CPC分类号： H04L1/0054 ,  H04W28/18

摘要： A communication device and a method of processing input data. The communication device, processing input data constituting at least one of data packet comprises a detection unit, an Automatic Gain Controller (AGC), a signal processor, a demodulator, a pre-detection module, and a Baseband module. The detection unit receives the input data to perform the packet detection. The Automatic Gain Controller, coupled to the detection unit, generates an adjusted data and a gain control parameter once packet is detected. The signal processor, coupled to the AGC, performs the data signal processing includes at least one of analog to digital transformation processing, radio frequency processing and baseband processing, and detects at least one of the desired signal, noise and interference. The demodulator, coupled to the signal processor, demodulates the processed data into a processed data according to at least one processing function of noise reduction, interference reduction, and signal compensation. The pre-detection module, coupled to the demodulator, determines whether a potential error has occurred in the demodulated input data by a pre-detection method prior completing retrieval of the data packet for performing a packet-based error check sequence, and performs a selection to decide whether the components need to be terminated and which of the components need to be terminated if there is a potential error occurred on the demodulated input data. The Baseband module, coupled to the demodulator, performs a packet-based error check on the data packet upon completing retrieval of the data packet if there is no potential error occurred on the demodulated input data.

摘要翻译： 通信设备和处理输入数据的方法。 通信设备处理构成数据分组中的至少一个的输入数据包括检测单元，自动增益控制器（AGC），信号处理器，解调器，预检测模块和基带模块。 检测单元接收输入数据以执行分组检​​测。 一旦检测到包，耦合到检测单元的自动增益控制器产生经调整的数据和增益控制参数。 耦合到AGC的信号处理器执行数据信号处理，包括模数转换处理，射频处理和基带处理中的至少一个，并且检测期望的信号，噪声和干扰中的至少一个。 耦合到信号处理器的解调器根据噪声降低，干扰减少和信号补偿的至少一个处理功能将经处理的数据解调为处理数据。 耦合到解调器的预检测模块在完成用于执行基于分组的错误检查序列的数据分组的检索之前通过预检测方法确定解调输入数据中是否发生了潜在错误，并且执行选择 如果在解调的输入数据上发生潜在错误，则决定是否需要终止组件以及哪些组件需要终止。 如果在解调输入数据上没有发生潜在错误，则耦合到解调器的基带模块在完成数据分组的检索时对数据分组执行基于分组的错误检查。

公开(公告)号：US07433663B1

公开(公告)日：2008-10-07

申请号：US11139343

申请日：2005-05-27

申请人： Po-Yuen Cheng

发明人： Po-Yuen Cheng

IPC分类号： H04B1/06

CPC分类号： H04B1/18 ,  H04B7/0857

摘要： A multiple receiving antennae system having a plurality of radio frequency (RF) modules being responsive to incoming signals for processing the same to generate baseband signals. The multiple receiving antennae system further processes baseband signals to generate digital baseband signals, in accordance with an embodiment of the present invention. The multiple receiving antennae system further still includes a plurality of automatic gain control (AGC) modules being responsive to digital baseband signals for processing the same to generate a plurality of gain values. The plurality of gain values are used in the plurality of RF modules for independent gain adjustment of the incoming signals. The plurality of gain values are used to generate adjusted signals with enhanced signal to noise ratio (SNR) to improve the performance of the multiple receiving antennae system, whereby the plurality of gain values are used to enhance reception of incoming signals by improving SNR.

摘要翻译： 一种具有多个射频（RF）模块的多接收天线系统，响应于输入信号进行处理以产生基带信号。 根据本发明的实施例，多接收天线系统进一步处理基带信号以产生数字基带信号。 多个接收天线系统还包括多个自动增益控制（AGC）模块，响应于数字基带信号进行处理，以产生多个增益值。 在多个RF模块中使用多个增益值用于输入信号的独立增益调整。 多个增益值用于产生具有增强的信噪比（SNR）的调整信号，以改善多个接收天线系统的性能，由此多个增益值用于通过改善SNR来增强输入信号的接收。