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11. 发明授权

US08514781B2 Apparatus and method for adjusting transmission power of communication system 有权
标题翻译：调整通讯系统传输功率的装置及方法
公开(公告)号：US08514781B2
公开(公告)日：2013-08-20
申请号：US12836486
申请日：2010-07-14
申请人： Der-Zheng Liu , Kuang-Yu Yen , Jia-Ching Shen
发明人： Der-Zheng Liu , Kuang-Yu Yen , Jia-Ching Shen
IPC分类号： H04W4/00
CPC分类号： H04W52/286 , H04W52/48 , H04W52/50
摘要： The present invention provides a method for adjusting transmission power of a communication system having a first terminal and a second terminal. In accordance with a preferred embodiment, the method comprises steps of: (a) repeatedly transmitting a detecting packet from the first terminal to the second terminal by sequentially using one of a variety of transmission powers; (b) receiving a responding packet from the second terminal, wherein the responding packet corresponds to the one of the variety of transmission powers; and (c) choosing at least one from the variety of the transmission powers for transmitting at least a data packet to the second terminal therewith based on the responding packet from the second terminal.
摘要翻译：本发明提供一种用于调整具有第一终端和第二终端的通信系统的发送功率的方法。根据优选实施例，该方法包括以下步骤：（a）通过依次使用各种发送功率之一，将检测分组从第一终端重复发送到第二终端; （b）从所述第二终端接收响应分组，其中所述响应分组对应于所述多种传输功率中的一种; 以及（c）基于来自第二终端的响应分组从至少一个发送功率中选择至少一个，用于至少将数据分组发送到其第二终端。

12. 发明授权

US07983324B2 Symbol boundary acquisition apparatus and method thereof 有权
标题翻译：符号边界采集装置及其方法
公开(公告)号：US07983324B2
公开(公告)日：2011-07-19
申请号：US11465452
申请日：2006-08-18
申请人： Kuo-Ming Wu , Der-Zheng Liu , Kuang-Yu Yen
发明人： Kuo-Ming Wu , Der-Zheng Liu , Kuang-Yu Yen
IPC分类号： H04B1/00
CPC分类号： H04L27/2662 , H04B1/7183 , H04L27/2675
摘要： The present invention relates to a symbol acquisition apparatus and a method thereof. The method includes: determining a first boundary according to a first preamble symbol and generating a first confidence value according to signal quality of the first preamble symbol; determining a second boundary according to a second preamble symbol and generating a second confidence value according to signal quality of the second preamble symbol; and determining a symbol boundary from the first and the second boundaries according to the first and the second confidence values.
摘要翻译：符号获取装置及其方法技术领域本发明涉及符号获取装置及其方法。该方法包括：根据第一前导码符号确定第一边界，并根据第一前导符号的信号质量产生第一置信度值; 根据第二前导码符号确定第二边界，并根据第二前导符号的信号质量产生第二置信度值; 以及根据第一和第二置信度从第一边界和第二边界确定符号边界。

13. 发明授权

US07212795B2 Automatic gain control and antenna selection method for a radio communication system 有权
标题翻译：无线电通信系统的自动增益控制和天线选择方法
公开(公告)号：US07212795B2
公开(公告)日：2007-05-01
申请号：US10864193
申请日：2004-06-09
申请人： Der-Zheng Liu , Song-Nien Tang , Tai-Cheng Liu , Kuang-Yu Yen
发明人： Der-Zheng Liu , Song-Nien Tang , Tai-Cheng Liu , Kuang-Yu Yen
IPC分类号： H04B1/06
CPC分类号： H03G3/3052 , H03G2201/206 , H03G2201/302 , H03G2201/305 , H03G2201/307 , H03G2201/502 , H03G2201/508 , H03M1/185 , H04B7/0814
摘要： The invention provides an automatic gain control and antenna selection method used in a receiver of a radio communication system. The received signal power is estimated by digital signal processing after analog-to-digital conversion in the system, in order to adjust the gain of the front end analog signal until the magnitude of the analog signal is adjusted to an optimum range of the digital signal processing. In addition, the ADC is utilized to estimate the signal power as the basis of the antenna selection.
摘要翻译：本发明提供一种在无线电通信系统的接收机中使用的自动增益控制和天线选择方法。接收到的信号功率通过系统中模数转换后的数字信号处理来估计，以便调整前端模拟信号的增益，直到模拟信号的幅度被调整到数字信号的最佳范围处理。此外，ADC用于估计信号功率作为天线选择的基础。

14. 发明申请

US20050157812A1 METHOD AND RELATED APPARATUS FOR REDUCING PEAK-TO-AVERAGE-POWER RATIO 审中-公开
标题翻译：用于减小峰值平均功率比的方法和相关装置
公开(公告)号：US20050157812A1
公开(公告)日：2005-07-21
申请号：US10905757
申请日：2005-01-19
申请人： Der-Zheng Liu , Kuang-Yu Yen , Kuo-Ming Wu
发明人： Der-Zheng Liu , Kuang-Yu Yen , Kuo-Ming Wu
IPC分类号： H04K1/02 , H04L27/26
CPC分类号： H04L27/2623
摘要： An apparatus for reducing a peak-to-average-power ratio includes a clipping signal detector coupled to the original time domain signal for generating an ideal clipping signal according to the original time domain signal, a clipping signal reconstruction unit coupled to the clipping signal detector for generating an actual clipping signal according to the ideal clipping signal, and a signal clipper coupled to the original time domain signal and the clipping signal reconstruction unit for generating a clipped time domain signal.
摘要翻译：用于降低峰均功率比的装置包括：耦合到原始时域信号的限幅信号检测器，用于根据原始时域信号产生理想的限幅信号;剪切信号重建单元，耦合到限幅信号检测器用于根据理想的削波信号产生实际的削波信号，以及耦合到原始时域信号的信号限幅器和用于产生限幅时域信号的限幅信号重构单元。

15. 发明授权

US09136963B2 Wireless transmission apparatus and related wireless transmission method 有权
标题翻译：无线传输装置及相关无线传输方式
公开(公告)号：US09136963B2
公开(公告)日：2015-09-15
申请号：US12017351
申请日：2008-01-22
申请人： Kuang-Yu Yen , Jiun-Hung Yu , Der-Zheng Liu , Chung-Yao Chang
发明人： Kuang-Yu Yen , Jiun-Hung Yu , Der-Zheng Liu , Chung-Yao Chang
IPC分类号： H04H20/71 , H04H60/11 , H04H20/42 , H04H20/61
CPC分类号： H04H60/11 , H04H20/42 , H04H20/61
摘要： A wireless transmission method for broadcasting packets to a plurality of receiving devices includes: broadcasting a plurality of packets to the receiving devices, receiving signals transmitted from the receiving devices, generating a plurality of estimation results according to the signals transmitted from the receiving devices where each of the estimation results corresponds to a receiving quality while each of the receiving devices receives the packets, determining whether each of the receiving devices is suitable for receiving the packets according to each of the estimation results and a recipient condition and storing information of at least one of the receiving devices suitable for receiving the packets, and determining whether the at least one of the receiving devices needs to receive a broadcasted packet again according to the information and signals transmitted from the at least one of the receiving devices suitable for receiving the packets.
摘要翻译：一种用于向多个接收设备广播分组的无线传输方法包括：向接收设备广播多个分组，接收从接收设备发送的信号，根据从接收设备发送的信号生成多个估计结果，其中每个接收设备的估计结果对应于接收质量，而每个接收设备接收分组，根据估计结果和接收者条件确定每个接收设备是否适于接收分组，并且存储至少一个以及确定所述接收设备中的至少一个是否需要根据从适于接收分组的接收设备中的至少一个发送的信息和信号再次接收广播分组。

16. 发明申请

US20120094622A1 ANTENNA DIVERSITY SYSTEM 有权
标题翻译：天线多样性系统
公开(公告)号：US20120094622A1
公开(公告)日：2012-04-19
申请号：US13275321
申请日：2011-10-18
申请人： Kuang-Yu Yen , Der-Zheng Liu
发明人： Kuang-Yu Yen , Der-Zheng Liu
IPC分类号： H04B7/02 , H04B7/00
CPC分类号： H04B7/0874
摘要： An antenna diversity system having a non-interrupt function is provided. The antenna diversity system includes: a plurality of antennas, a plurality of radio frequency (RF) circuits, and a signal processing unit. The RF circuits are respectively coupled to the antennas, wherein each RF circuit is utilized for operating in one of a plurality of channels. The signal processing unit is coupled to the RF circuits, and utilized for determining whether a signal quality value of at least one of the antennas lower than a threshold to generate a determining result, and determining whether to change the channel of at least one of the RF circuits according to the determining result, so as to make at least two of the RF circuits operating in a same channel of the channels.
摘要翻译：提供具有非中断功能的天线分集系统。天线分集系统包括：多个天线，多个射频（RF）电路和信号处理单元。 RF电路分别耦合到天线，其中每个RF电路用于在多个信道之一中操作。所述信号处理单元耦合到所述RF电路，并且用于确定所述天线中的至少一个的信号质量值是否低于阈值以产生确定结果，以及确定是否改变所述信号处理单元中的至少一个的信道 RF电路根据确定结果，以使至少两个RF电路在通道的相同通道中工作。

17. 发明授权

US08116248B2 Apparatus and method for power-saving in multiple antenna communication system 有权
公开(公告)号：US08116248B2
公开(公告)日：2012-02-14
申请号：US12544769
申请日：2009-08-20
申请人： Der-Zheng Liu , Chung-Yao Chang , Kuang-Yu Yen
发明人： Der-Zheng Liu , Chung-Yao Chang , Kuang-Yu Yen
IPC分类号： G08C17/00
CPC分类号： H04W52/287 , H04B7/0413
摘要： A multiple-antenna transceiver in the present invention includes a frame controller and circuitry for transmitting and receiving. The transmitting component includes a sequence selection circuit, a MIMO modulation and coding circuit, and numerous TX RFE and AFE circuits. The receiving component includes a MIMO demodulation and decoding circuit, a sequence separation circuit, and numerous RX RFE and AFE circuits. The frame controller can enable and disable the TX and RX RFE and AFE circuits individually so as to reduce power consumption of the whole system.

18. 发明授权

US07684501B2 Apparatus and method for carrier frequency offset and phase compensation in communication system 有权
标题翻译：通信系统中载波频偏和相位补偿的装置和方法
公开(公告)号：US07684501B2
公开(公告)日：2010-03-23
申请号：US10779648
申请日：2004-02-18
申请人： Der-Zheng Liu , Song-Nien Tung , Tai-Cheng Liu , Kuang-Yu Yen
发明人： Der-Zheng Liu , Song-Nien Tung , Tai-Cheng Liu , Kuang-Yu Yen
IPC分类号： H04K1/10
CPC分类号： H04L27/2657 , H04L27/266 , H04L27/2675 , H04L27/2695
摘要： The present invention provides apparatus and methods for carrier frequency offset and phase compensation, which can compensate the phase rotation of an OFDM symbol resulted from carrier frequency offset between the receiver and transmitter of an OFDM System. The apparatus and method for carrier frequency offset compensation generates an estimated carrier frequency offset according to a phase error between estimated frequency responses of two consecutive received OFDM symbols within the pilot subchannel, and calculates an accumulated phase rotation, according to the estimated carrier frequency offset, for compensating the received OFDM symbol. On the other hand, the apparatus and method for phase compensation generates an estimated residual phase error according to the pilot signal of a frequency offset-compensated OFDM symbol and the original pilot signal transmitted by the transmitter, and compensates the frequency offset-compensated OFDM symbol or a following one according to the estimated residual phase error.
摘要翻译：本发明提供了用于载波频率偏移和相位补偿的装置和方法，其可以补偿由OFDM系统的接收机和发射机之间的载波频率偏移导致的OFDM符号的相位旋转。用于载波频率补偿的装置和方法根据导频子信道内的两个连续接收的OFDM符号的估计频率响应之间的相位误差产生估计的载波频率偏移，并且根据所估计的载波频率偏移来计算累积的相位旋转，用于补偿接收到的OFDM符号。另一方面，用于相位补偿的装置和方法根据频偏补偿OFDM符号的导频信号和由发射机发送的原始导频信号产生估计的残余相位误差，并且补偿频偏补偿的OFDM符号或根据估计的残余相位误差的后一个。

19. 发明申请

US20100061489A1 Power Saving Apparatus and Method of Multiple-Antenna Receiver with Variable Rate 有权
标题翻译：多变量天线接收机节能装置及方法
公开(公告)号：US20100061489A1
公开(公告)日：2010-03-11
申请号：US12555949
申请日：2009-09-09
申请人： Der-Zheng Liu , Jiun-Hung Yu , Kuang-Yu Yen
发明人： Der-Zheng Liu , Jiun-Hung Yu , Kuang-Yu Yen
IPC分类号： H04L27/06 , H04B1/06
CPC分类号： H04L1/06 , H04L1/0053
摘要： A multiple-antenna receiver can enable and disable receive radio frequency front-end and analog front-end circuits of specific antenna receiving routes according to a predetermined scheme during the receive data phase. The predetermined scheme calculates signal quality indices of the receiving route antennas by means of a preamble sequence, and derives the modulation and coding scheme and the number of spatial streams via the information provided by a header sequence. Indications of the signal quality indices are compared with threshold values to determine which receiving routes are to be turned on and which receiving routes are to be turned off.
摘要翻译：多天线接收机可以在接收数据阶段期间根据预定方案启用和禁用特定天线接收射频前端和模拟前端电路。预定方案通过前置码序列计算接收路由天线的信号质量指标，并通过头序列提供的信息得出调制编码方案和空间流数。将信号质量指标的指示与阈值进行比较，以确定要接通哪些接收路由，哪个接收路由将被关闭。

20. 发明申请

US20100046408A1 Apparatus and Method for Power-Saving in Multiple Antenna Communication System 有权
标题翻译：多天线通信系统节能设备及方法
公开(公告)号：US20100046408A1
公开(公告)日：2010-02-25
申请号：US12544769
申请日：2009-08-20
申请人： Der-Zheng Liu , Chung-Yao Chang , Kuang-Yu Yen
发明人： Der-Zheng Liu , Chung-Yao Chang , Kuang-Yu Yen
IPC分类号： G08C17/02 , H04M1/00
CPC分类号： H04W52/287 , H04B7/0413
摘要： A multiple-antenna transceiver in the present invention includes a frame controller and circuitry for transmitting and receiving. The transmitting component includes a sequence selection circuit, a MIMO modulation and coding circuit, and numerous TX RFE and AFE circuits. The receiving component includes a MIMO demodulation and decoding circuit, a sequence separation circuit, and numerous RX RFE and AFE circuits. The frame controller can enable and disable the TX and RX RFE and AFE circuits individually so as to reduce power consumption of the whole system.
摘要翻译：本发明的多天线收发器包括帧控制器和用于发送和接收的电路。发送组件包括序列选择电路，MIMO调制和编码电路以及许多TX RFE和AFE电路。接收组件包括MIMO解调和解码电路，序列分离电路和许多RX RFE和AFE电路。帧控制器可以单独启用和禁用TX和RX RFE和AFE电路，以降低整个系统的功耗。

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