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。

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。

公开(公告)号：US07535971B2

公开(公告)日：2009-05-19

申请号：US11164486

申请日：2005-11-24

申请人： Kuang-Yu Yen ,  Der-Zheng Liu ,  Shu-Hua Yang ,  Chih-Hung Tsai

发明人： Kuang-Yu Yen ,  Der-Zheng Liu ,  Shu-Hua Yang ,  Chih-Hung Tsai

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04B7/0814 ,  H04L1/1607

摘要： A receiver includes a plurality of antennas; a switching device coupled to the antennas for selecting one of the antennas to receive transmitted signals; a demodulator coupled to the switching device for demodulating the transmitted signals to generate demodulated signals; and a control circuit coupled to the demodulator and the switching device, for counting a specific type of packets within the demodulated signals so as to accordingly control the switching device.

摘要翻译： 接收机包括多个天线; 耦合到所述天线的开关装置，用于选择所述天线之一以接收发射信号; 耦合到所述开关装置的解调器，用于解调所发送的信号以产生解调信号; 以及耦合到解调器和开关装置的控制电路，用于对解调信号内的特定类型的分组进行计数，从而相应地控制开关装置。

公开(公告)号：US08238465B2

公开(公告)日：2012-08-07

申请号：US12562422

申请日：2009-09-18

申请人： Yen-Chih Chen ,  Tsung-Chun Cheng ,  Der-Zheng Liu

发明人： Yen-Chih Chen ,  Tsung-Chun Cheng ,  Der-Zheng Liu

IPC分类号： H04L1/02

CPC分类号： H04L25/0246 ,  H04L27/34

摘要： A sphere decoding method applied to a MIMO channel is provided. Multiple constellation points of an nth detection layer corresponding to a MIMO channel matrix are enumerated based on an enumeration rule, and at least one nth sub-set of the nth detection layer is defined. K constellation points are obtained from each of the at least one nth sub-set as preferred points, and Kn preferred points are selected from all the K preferred points of the at least one nth sub-set. K1 preferred points are transferred to a second detection layer from a first detection layer. K(T−1) preferred points are transferred to a Tth detection layer from a (T−1)th detection layer. An optimal solution is determined according to Kn preferred points of the nth detection layer. K and at least one of K1 to KT are determined by the The characteristic of the MIMO channel matrix.

摘要翻译： 提供了应用于MIMO信道的球体解码方法。 对应于MIMO信道矩阵的第n个检测层的多个星座点基于枚举规则进行枚举，并且定义第n个检测层的至少第n个子集。 从所述至少第n个子集中的每一个获得K个星座点作为优选点，并且从所述至少第n个子集的所有K个优选点中选择Kn个优选点。 K1优选点从第一检测层转移到第二检测层。 K（T-1）优选点从第（T-1）检测层转移到第T检测层。 根据第n个检测层的Kn优选点确定最佳解。 K，并且由K1到KT中的至少一个由MIMO信道矩阵的特性来确定。

公开(公告)号：US20100074352A1

公开(公告)日：2010-03-25

申请号：US12562422

申请日：2009-09-18

申请人： Yen-Chih Chen ,  Tsung-Chun Cheng ,  Der-Zheng Liu

发明人： Yen-Chih Chen ,  Tsung-Chun Cheng ,  Der-Zheng Liu

IPC分类号： H04K1/10

CPC分类号： H04L25/0246 ,  H04L27/34

摘要： A sphere decoding method applied to a MIMO channel is provided. Multiple constellation points of an nth detection layer corresponding to a MIMO channel matrix are enumerated based on an enumeration rule, and at least one nth sub-set of the nth detection layer is defined. K constellation points are obtained from each of the at least one nth sub-set as preferred points, and Kn preferred points are selected from all the K preferred points of the at least one nth sub-set. K1 preferred points are transferred to a second detection layer from a first detection layer. K(T−1) preferred points are transferred to a Tth detection layer from a (T−1)th detection layer. An optimal solution is determined according to Kn preferred points of the nth detection layer. K and at least one of K1 to KT are determined by the The characteristic of the MIMO channel matrix.

摘要翻译： 提供了应用于MIMO信道的球体解码方法。 对应于MIMO信道矩阵的第n个检测层的多个星座点基于枚举规则进行枚举，并且定义第n个检测层的至少第n个子集。 从所述至少第n个子集中的每一个获得K个星座点作为优选点，并且从所述至少第n个子集的所有K个优选点中选择Kn个优选点。 K1优选点从第一检测层转移到第二检测层。 K（T-1）优选点从第（T-1）检测层转移到第T检测层。 根据第n个检测层的Kn优选点确定最佳解。 K，并且由K1到KT中的至少一个由MIMO信道矩阵的特性来确定。

公开(公告)号：US07583740B2

公开(公告)日：2009-09-01

申请号：US11307096

申请日：2006-01-23

申请人： Kuo-Ming Wu ,  Der-Zheng Liu

发明人： Kuo-Ming Wu ,  Der-Zheng Liu

IPC分类号： H04K1/10

CPC分类号： H04L27/2662 ,  H04L27/2675 ,  H04L27/2695

摘要： An apparatus and method for tracking a sampling clock are disclosed. The apparatus includes a compensating circuit compensating phases of a first and a second received symbols according to a compensating signal and thereby generating a first and a second compensated symbols; a data removal circuit removing a first predetermined transmitted data from the first compensated symbol, and a second predetermined transmitted data from the second compensated symbol and thereby generating a first and a second data removal symbols; and a computing circuit generating a sampling clock offset according to the first and the second data removal symbols, and adjusting the sampling clock signal according to the sampling clock offset.

摘要翻译： 公开了一种跟踪采样时钟的装置和方法。 该装置包括补偿电路，根据补偿信号补偿第一和第二接收符号的相位，从而产生第一和第二补偿符号; 从第一补偿符号去除第一预定发送数据的数据去除电路和来自第二补偿符号的第二预定发送数据，从而生成第一和第二数据去除符号; 以及计算电路，根据第一和第二数据去除符号产生采样时钟偏移，并根据采样时钟偏移调整采样时钟信号。

公开(公告)号：US07564927B2

公开(公告)日：2009-07-21

申请号：US11162831

申请日：2005-09-25

申请人： Kuo-Ming Wu ,  Der-Zheng Liu

发明人： Kuo-Ming Wu ,  Der-Zheng Liu

IPC分类号： H04L27/00

CPC分类号： H04L27/2657 ,  H04L2027/0026

摘要： A band averaging circuit and a related method for estimating a carrier frequency offset are applied in a multi-band multi-carrier communication system. A packet of the multi-band multi-carrier communication system is transmitted via a plurality of carriers. The band averaging circuit includes a frequency offset estimation unit for generating a plurality of carrier frequency offset ratios corresponding to the carriers according to a received packet; and a frequency offset adjustment circuit coupled to the frequency offset estimation unit for calculating a weighted average carrier frequency offset ratio according to carrier frequency offset ratios and comparison results of the carrier frequency offset ratios, and also for calculating a carrier frequency offset of each carrier according to the weighted average carrier frequency offset ratio and a center frequency of the carrier.

摘要翻译： 用于估计载波频率偏移的频带平均电路和相关方法被应用在多频带多载波通信系统中。 经由多个载波发送多频带多载波通信系统的分组。 频带平均电路包括：频率偏移估计单元，用于根据接收的分组产生对应于载波的多个载波频率偏移比; 以及频率偏移调整电路，其耦合到所述频率偏移估计单元，用于根据载波频率偏移比和所述载波频率偏移比的比较结果计算加权平均载波频率偏移比，并且还用于根据载波频率偏移比来计算每个载波的载波频率偏移 加权平均载波频率偏移比和载波的中心频率。

公开(公告)号：US07277503B2

公开(公告)日：2007-10-02

申请号：US10640034

申请日：2003-08-14

申请人： Fong-Ching Huang ,  Der-Zheng Liu

发明人： Fong-Ching Huang ,  Der-Zheng Liu

IPC分类号： H03D3/18

CPC分类号： H04L27/2657 ,  H04L27/2662 ,  H04L27/2679

摘要： An apparatus and method for synchronizing sampling frequencies of a receiver and a transmitter of a multi-carrier communication system is provided. The receiver includes an estimator for estimating a frequency offset by employing an additional angle rotation of a received signal in frequency domain. The apparatus includes a compensation loop filter for generating a first output in response to a frequency offset compensation, an adder for adding the estimated frequency offset and the first output to generate a second output, and a loop filter for generating frequency offset compensation according to the second output. The method repeatedly applies the apparatus to generate frequency offset compensation, and then feeds it back to an oscillator to compensate the sampling frequency of the receiver. The apparatus and method can also be applied to a communication system with a carrier frequency offset.

摘要翻译： 提供了一种用于同步多载波通信系统的接收机和发射机的采样频率的装置和方法。 接收机包括估计器，用于通过在频域中采用接收信号的附加角度旋转来估计频率偏移。 该装置包括：补偿环路滤波器，用于响应于频率偏移补偿产生第一输出;加法器，用于将估计的频率偏移和第一输出相加以产生第二输出;以及环路滤波器，用于根据 第二输出。 该方法重复应用该装置以产生频偏补偿，然后将其馈送到振荡器以补偿接收机的采样频率。 该装置和方法也可以应用于具有载波频率偏移的通信系统。

公开(公告)号：US20060215776A1

公开(公告)日：2006-09-28

申请号：US11307096

申请日：2006-01-23

申请人： Kuo-Ming Wu ,  Der-Zheng Liu

发明人： Kuo-Ming Wu ,  Der-Zheng Liu

IPC分类号： H04K1/10

CPC分类号： H04L27/2662 ,  H04L27/2675 ,  H04L27/2695

摘要： An apparatus and method for tracking a sampling clock are disclosed. The apparatus includes a compensating unit compensating phases of a first and a second received symbols according to a compensating signal and thereby generating a first and a second compensated symbols; a data removal module removing a first predetermined transmitted data from the first compensated symbol, and a second predetermined transmitted data from the second compensated symbol and thereby generating a first and a second data removal symbols; and a computing module generating a sampling clock offset according to the first and the second data removal symbols, and adjusting the sampling clock signal according to the sampling clock offset.

摘要翻译： 公开了一种跟踪采样时钟的装置和方法。 该装置包括：补偿单元，根据补偿信号补偿第一和第二接收符号的相位，从而生成第一和第二补偿符号; 从第一补偿符号去除第一预定发送数据的数据去除模块和来自第二补偿符号的第二预定发送数据，从而生成第一和第二数据去除符号; 以及计算模块，根据第一和第二数据去除符号生成采样时钟偏移量，并根据采样时钟偏移量调整采样时钟信号。

公开(公告)号：US20060029236A1

公开(公告)日：2006-02-09

申请号：US11161585

申请日：2005-08-09

申请人： Kuo-Ming Wu ,  Der-Zheng Liu

发明人： Kuo-Ming Wu ,  Der-Zheng Liu

IPC分类号： H03G5/00 ,  H04B3/14 ,  H01P9/00

CPC分类号： H04L25/03057 ,  H04B1/71637 ,  H04B1/719 ,  H04L2025/03414

摘要： An apparatus and a method for equalizing a received signal to generate an equalized signal are disclosed. The apparatus includes a channel estimator for generating a channel estimation value according to a preamble symbol in the received signal and for generating a channel response value according to the channel estimation value, an interference power estimation circuit for generating an interference power estimate according to a hard decision value, the channel response value, and the received signal, and an equalization circuit for equalizing the received signal according to the channel response value and the adjusted interference power estimate to generate the equalized signal. The hard decision value corresponds to the equalized signal.

摘要翻译： 公开了一种用于均衡接收信号以产生均衡信号的装置和方法。 该装置包括：信道估计器，用于根据接收信号中的前导码符号生成信道估计值，并根据信道估计值产生信道响应值;干扰功率估计电路，用于根据硬信号产生干扰功率估计 判定值，信道响应值和接收信号，以及用于根据信道响应值和调整后的干扰功率估计均衡接收信号以产生均衡信号的均衡电路。 硬判定值对应于均衡信号。