公开(公告)号：US07376176B2

公开(公告)日：2008-05-20

申请号：US10488387

申请日：2002-09-03

申请人： Chunming Zhao ,  Zhangyong Ma ,  Liangcheng Jiang ,  Xiaohu You

发明人： Chunming Zhao ,  Zhangyong Ma ,  Liangcheng Jiang ,  Xiaohu You

IPC分类号： H04B1/00 ,  H03D1/04

CPC分类号： H04B1/7117 ,  H04B1/712 ,  H04B7/01 ,  H04L25/0212

摘要： The present invention relates to a method and an apparatus for adjusting an average interval of channel estimation dynamically based on Doppler-shift. The method comprises the steps of estimating Doppler-shift by using level cross rate (LCR) according to differently moving speeds of mobile terminals, determining the optimal average interval of channel estimation based on the relationship between the existing Doppler-shift and the optimal average interval of channel estimation, dynamically adjusting the average interval of channel estimation according to the determined the optimal average interval of channel estimation to make the coherent receiver obtain the optimal estimation performance at different moving speeds. The apparatus of the present invention comprises a channel estimation module, a valid/strongest finger selection module, a RAKE demodulation and combining module, a RAKE output decision module, an LCR detection and Doppler-shift estimation module, a Gaussian noise power estimation module, a strongest path signal power estimation module, and an optimal average interval calculation module.

摘要翻译： 本发明涉及一种基于多普勒频移动态地调整信道估计的平均间隔的方法和装置。 该方法包括以下步骤：根据移动终端不同移动速度的等级交叉速率（LCR）估计多普勒频移，基于现有多普勒频移与最佳平均间隔之间的关系确定信道估计的最佳平均间隔 根据确定信道估计的最优平均间隔动态调整信道估计的平均间隔，使相干接收机在不同移动速度下获得最佳估计性能。 本发明的装置包括信道估计模块，有效/最强的手指选择模块，RAKE解调和组合模块，RAKE输出判定模块，LCR检测和多普勒频移估计模块，高斯噪声功率估计模块， 最强路径信号功率估计模块和最优平均间隔计算模块。

公开(公告)号：US20050018641A1

公开(公告)日：2005-01-27

申请号：US10488387

申请日：2002-09-03

申请人： Chunming Zhao ,  Xhangyong Ma ,  Liangcheng Jiang ,  Xiaohu You

发明人： Chunming Zhao ,  Xhangyong Ma ,  Liangcheng Jiang ,  Xiaohu You

IPC分类号： H04B1/707 ,  H04B7/01 ,  H04L25/02 ,  H04B7/216

CPC分类号： H04B1/7117 ,  H04B1/712 ,  H04B7/01 ,  H04L25/0212

摘要： The present invention relates to a method and an apparatus for adjusting an average interval of channel estimation dynamically based on Doppler-shift. The method comprises the steps of estimating Doppler-shift by using level cross rate (LCR) according to differently moving speeds of mobile terminals, determining the optimal average interval of channel estimation based on the relationship between the existing Doppler-shift and the optimal average interval of channel estimation, dynamically adjusting the average interval of channel estimation according to the determined the optimal average interval of channel estimation to make the coherent receiver obtain the optimal estimation performance at different moving speeds. The apparatus of the present invention comprises a channel estimation module, a valid/strongest finger selection module, a RAKE demodulation and combining module, a RAKE output decision module, an LCR detection and Doppler-shift estimation module, a Gaussian noise power estimation module, a strongest path signal power estimation module, and an optimal average interval calculation module.

摘要翻译： 本发明涉及一种基于多普勒频移动态地调整信道估计的平均间隔的方法和装置。 该方法包括以下步骤：根据移动终端不同移动速度的等级交叉速率（LCR）估计多普勒频移，基于现有多普勒频移与最佳平均间隔之间的关系确定信道估计的最佳平均间隔 根据确定信道估计的最优平均间隔动态调整信道估计的平均间隔，使相干接收机在不同移动速度下获得最佳估计性能。 本发明的装置包括信道估计模块，有效/最强的手指选择模块，RAKE解调和组合模块，RAKE输出判定模块，LCR检测和多普勒频移估计模块，高斯噪声功率估计模块， 最强路径信号功率估计模块和最优平均间隔计算模块。

公开(公告)号：US07310368B2

公开(公告)日：2007-12-18

申请号：US10450887

申请日：2001-12-18

申请人： Xiaohu You ,  Jinghong Guo ,  Liangcheng Jiang ,  Chunming Zhao ,  Shixin Cheng

发明人： Xiaohu You ,  Jinghong Guo ,  Liangcheng Jiang ,  Chunming Zhao ,  Shixin Cheng

IPC分类号： H04B1/00 ,  H03D1/00

CPC分类号： H04B1/7075 ,  H04B1/7095 ,  H04B1/7113

摘要： The present invention discloses an apparatus for initial synchronization and cell search in a CDMA system based on multipath energy window. The apparatus perform initial synchronization and adjacent cell search by using multipath energy window based on the processing method of multipath energy window. The apparatus can be implemented based on a parallel correlator bank. This invention also provides the application of the apparatus to a coherent spreading receiver.

摘要翻译： 本发明公开了一种基于多径能量窗口的CDMA系统中初始同步和小区搜索的装置。 该装置基于多路径能量窗的处理方法，通过使用多径能量窗进行初始同步和相邻小区搜索。 该装置可以基于并行相关器组来实现。 本发明还提供了将该装置应用于相干扩展接收机。

公开(公告)号：US07095993B2

公开(公告)日：2006-08-22

申请号：US10450324

申请日：2001-12-12

申请人： Xiaohu You ,  Yan Zhang ,  Ling Wang ,  Liangcheng Jiang ,  Shixin Cheng

发明人： Xiaohu You ,  Yan Zhang ,  Ling Wang ,  Liangcheng Jiang ,  Shixin Cheng

IPC分类号： H04B1/18

CPC分类号： H04B1/7087 ,  H04B1/7113 ,  H04L2027/0028 ,  H04L2027/0055

摘要： An automatic frequency correction (AFC) apparatus used for CDMA multipath fading channels comprises a frequency-offset evaluator, an automatic frequency correction loop filter and a carrier frequency adjuster. The present invention provides a “multipath energy window” designing method for the non-determinacy of multipath signals in mobile communication environment. Frequency-offset information can be extracted from the multipath energy window by a simple calculation and evaluated by a maximal SNR weight process. This invention also provides a step-variable accumulation adjusting method and greatly improves the response speed of the AFC apparatus as compared with a conventional loop filter, whereby supplies better AFC required for CDMA mobile terminals.

摘要翻译： 用于CDMA多径衰落信道的自动频率校正（AFC）装置包括频率偏移评估器，自动频率校正环路滤波器和载波频率调节器。 本发明提供了一种用于移动通信环境中多路径信号的非确定性的“多径能量窗”设计方法。 可以通过简单的计算从多径能量窗口提取频偏信息，并通过最大SNR权重处理进行评估。 本发明还提供了一种步进可变累加调整方法，与传统的环路滤波器相比，大大提高了AFC装置的响应速度，从而为CDMA移动终端提供了更好的AFC。

公开(公告)号：US07308017B2

公开(公告)日：2007-12-11

申请号：US10450883

申请日：2001-12-18

申请人： Liangcheng Jiang ,  Xiaohu You ,  Junchao Wang ,  Jinghong Guo ,  Shixin Cheng

发明人： Liangcheng Jiang ,  Xiaohu You ,  Junchao Wang ,  Jinghong Guo ,  Shixin Cheng

IPC分类号： H04B1/00

CPC分类号： H04B1/7095 ,  H04B1/7113 ,  H04B1/712

摘要： The Spread Spectrum integration coherent receiver of the invention employs a time division multiplexing correlator bank and thus obtained coherent channel evaluator as a core. The receiver can execute initial PN synchronization, RAKE diversity coherent combination, AFC and adjacent cell search and combination receipt, and soft handoff. Further, “part capture in parallel based on slide energy window” and “tracking loop based on energy window barycenter” are introduced into the receiver of the invention, thereby simplifying the structure of the RAKE receiver. The receiver is capable of overcoming multipath fading, ensuring the RAKE receipt performance.

摘要翻译： 本发明的扩展频谱积分相干接收机采用时分复用相关器组，从而获得相干信道评估器作为核心。 接收机可以执行初始PN同步，RAKE分集相干组合，AFC和相邻小区搜索和组合接收以及软切换。 此外，“本发明的接收机”中引入了“基于载玻片能量窗并行的部分捕获”和“基于能量窗重心的跟踪环路”，从而简化了RAKE接收机的结构。 接收机能够克服多路径衰落，确保RAKE接收性能。

公开(公告)号：US07366226B2

公开(公告)日：2008-04-29

申请号：US10450561

申请日：2001-12-12

申请人： Chunming Zhao ,  Jinghong Guo ,  Xiaohu You ,  Shixin Cheng

发明人： Chunming Zhao ,  Jinghong Guo ,  Xiaohu You ,  Shixin Cheng

IPC分类号： H04B1/00

CPC分类号： H04B1/70754 ,  H04B1/7085 ,  H04B1/7113 ,  H04B1/7117

摘要： The present invention discloses a method for pilot channel tracking based on multipath channel barycenter tracking loop, comprises steps of evaluating multipath fading channel parameters, calculating the barycenter of a multipath energy window, and loop filtering and adjusting the phase of spread spectrum sequence codes. The method of the invention does not need to individually track each delay path, thereby improving the tracking performance and timing recovery stability of a spread spectrum receiver. Only a multipath channel evaluator and a multipath energy window barycenter calculating means are used to track PN signals from a plurality of signal sources, thereby reducing hardware. Thus, a novelty coherent spread spectrum receiver can be constituted by cooperating with other parts.

摘要翻译： 本发明公开了一种基于多径信道重心跟踪环路的导频信道跟踪方法，包括多径衰落信道参数评估，多径能量窗口重心计算，循环滤波和调频扩频序列码相位的步骤。 本发明的方法不需要单独跟踪每个延迟路径，从而提高扩频接收机的跟踪性能和定时恢复稳定性。 仅使用多径信道评估器和多径能量窗重心计算装置来跟踪来自多个信号源的PN信号，由此减少硬件。 因此，可以通过与其他部分协作来构成新颖的相干扩频接收机。

公开(公告)号：US08630329B2

公开(公告)日：2014-01-14

申请号：US13498576

申请日：2009-09-28

申请人： Zaichen Zhang ,  Guangguo Bi ,  Xiaohu You ,  Liang Wu

发明人： Zaichen Zhang ,  Guangguo Bi ,  Xiaohu You ,  Liang Wu

IPC分类号： H04B1/00

CPC分类号： H04B1/7183 ,  H04B1/71632 ,  H04B1/717

摘要： For a demand of high speed, low cost and low power loss short distance wireless communication, a high-speed sampling and low-precision quantification pulse ultra-wideband wireless communication method is provided. A baseband narrow pulse sequence is generated at a transmission end using the digital technology by the method, and is transmitted after modulating amplifying and filtering and amplifying at a reception end, after the digital-signal processing of synchronizing, channel estimating, related detecting, and channel decoding, tec, is performed for the quantified data, the transmission information is retrieved. Comparing with the present carrier mechanism UWB wireless communication technology, the method does not need the complex radio frequency processing of orthogonal modulation/demodulation and frequency spectrum moving, etc, the quantification precision of analog-to-digital conversion is also decreased greatly, so the cost and power loss are greatly decreased; comparing with the present pulse mechanism UWB wireless communication technology, the method provided by the present invention greatly increase the data transmission rate, and increases the stability, reliability and integration.

摘要翻译： 针对高速，低成本，低功耗短距离无线通信的需求，提供了高速采样和低精度定量脉冲超宽带无线通信方式。 使用该方法的数字技术，在发送端生成基带窄脉冲序列，在进行同步，信道估计，相关检测和数字信号估计的数字信号处理之后，在接收端进行调制放大和滤波放大后发送 对量化数据执行信道解码tec，检索发送信息。 与现有载波机制UWB无线通信技术相比，该方法不需要正交调制/解调和频谱移动等复杂的射频处理，模数转换的量化精度也大大降低， 成本和功率损耗大大降低; 与目前的脉冲机制UWB无线通信技术相比，本发明提供的方法大大提高了数据传输速率，提高了稳定性，可靠性和集成度。

公开(公告)号：US20090161805A1

公开(公告)日：2009-06-25

申请号：US12225908

申请日：2007-01-26

申请人： Xiqi Gao ,  Xiaohu You ,  Wenjin Wang ,  Dong-Seung Kwon ,  Seung-Jun Lee

发明人： Xiqi Gao ,  Xiaohu You ,  Wenjin Wang ,  Dong-Seung Kwon ,  Seung-Jun Lee

IPC分类号： H04B1/10

CPC分类号： H04L1/0055 ,  H04L1/005 ,  H04L1/06

摘要： A detection method of space domain maximum posteriori probability (MAP) in a wireless communication system is a kind of detection technique of space domain MAP in a multi-aerial wireless communication system, which makes the detection of iteration soft interference elimination for the interference signals in the other moments, and makes the MAP detection or the simplified MAP detection for the all signals in current time and space domain. It includes the steps of: taking a fading block as a unit; the received signals are matched and combined in time domain and space domain, and calculating an equivalent channel matrix; making the sequence detection, calculating estimation and variance of the signals before the ending of detecting internal iteration; when the internal iteration detection finishes, the result is outputted, or is outputted after hard decision.

摘要翻译： 无线通信系统中空间域最大后验概率（MAP）的检测方法是多空中无线通信系统中空间域MAP的一种检测技术，能够对干扰信号的迭代软干扰消除进行检测 在其他时刻，对当前时间和空间域中的所有信号进行MAP检测或简化MAP检测。 它包括以下步骤：以褪色块为单位; 接收信号在时域和空域进行匹配和组合，并计算等效信道矩阵; 在检测内部迭代结束之前进行序列检测，计算信号的估计和方差; 当内部迭代检测结束时，输出结果，或在硬判决后输出。

公开(公告)号：US08737347B2

公开(公告)日：2014-05-27

申请号：US13497150

申请日：2010-11-02

申请人： Xiqi Gao ,  Bin Jiang ,  Xiaohu You ,  Teer Ba ,  Shi Jin ,  Jue Wang ,  Dongming Wang ,  Yanxiang Jiang

发明人： Xiqi Gao ,  Bin Jiang ,  Xiaohu You ,  Teer Ba ,  Shi Jin ,  Jue Wang ,  Dongming Wang ,  Yanxiang Jiang

IPC分类号： H04W72/04

CPC分类号： H04B7/0697 ,  H04J11/0033 ,  H04L25/0228

摘要： A pilot and channel estimation method for SDMA MIMO transmission downlink is provided in the present invention, and the method provides possibility for saving the orthogonal pilot resources; the pilot signals of different users in the transmitting antenna domain can occupy the same time-frequency resources, and thereby the pilot overhead of system resources can be reduced greatly; the method includes: for the MIMO transmission downlink that employs pre-coding for SDMA, taking the quantity of orthogonal pilot resources occupied by the users in the pre-coding domain as the number of data streams that can be transmitted or the number of spatial dimensions occupied first, at the transmitting end of the base station; then, performing SDMA transmission pre-coding for the orthogonal pilots in the pre-coding domain in the same way as the data signals, to obtain the pilot signals of the users in the transmitting antenna domain; wherein, the pilots of the users in the pre-coding domain can be orthogonal in the frequency domain or code domain, and the pilots of different users in the pre-coding domain can be identical or not identical to each other; the pilot signals of different users in the transmitting antenna domain can occupy the same time-frequency resources.

摘要翻译： 本发明提供了一种用于SDMA MIMO传输下行链路的导频和信道估计方法，该方法提供了保存正交试验资源的可能性; 发射天线域中不同用户的导频信号可以占用相同的时频资源，从而大大降低系统资源的导频开销; 该方法包括：对于采用SDMA预编码的MIMO传输下行链路，将预编码域中的用户占用的正交导频资源的数量作为可以发送的数据流的数量或空间维数 首先占用基站的发射端; 然后以与数据信号相同的方式对预编码域中的正交导频执行SDMA传输预编码，以获得发射天线域中用户的导频信号; 其中，预编码域中的用户的导频可以在频域或码域中正交，并且预编码域中的不同用户的导频可以相同或不相同; 发射天线域中不同用户的导频信号可以占用相同的时频资源。

公开(公告)号：US20120230369A1

公开(公告)日：2012-09-13

申请号：US13498576

申请日：2009-09-28

申请人： Zaichen Zhang ,  Guangguo Bi ,  Xiaohu You ,  Liang Wu

发明人： Zaichen Zhang ,  Guangguo Bi ,  Xiaohu You ,  Liang Wu

IPC分类号： H04B1/69

CPC分类号： H04B1/7183 ,  H04B1/71632 ,  H04B1/717

摘要： For a demand of high speed, low cost and low power loss short distance wireless communication, a high-speed sampling and low-precision quantification pulse ultra-wideband wireless communication method is provided. A baseband narrow pulse sequence is generated at a transmission end using the digital technology by the method, and is transmitted after modulating amplifying and filtering and amplifying at a reception end, after the digital-signal processing of synchronizing, channel estimating, related detecting, and channel decoding, tec, is performed for the quantified data, the transmission information is retrieved. Comparing with the present carrier mechanism UWB wireless communication technology, the method does not need the complex radio frequency processing of orthogonal modulation/demodulation and frequency spectrum moving, etc, the quantification precision of analog-to-digital conversion is also decreased greatly, so the cost and power loss are greatly decreased; comparing with the present pulse mechanism UWB wireless communication technology, the method provided by the present invention greatly increase the data transmission rate, and increases the stability, reliability and integration.

摘要翻译： 针对高速，低成本，低功耗短距离无线通信的需求，提供了高速采样和低精度定量脉冲超宽带无线通信方式。 使用该方法的数字技术，在发送端生成基带窄脉冲序列，在进行同步，信道估计，相关检测和数字信号估计的数字信号处理之后，在接收端进行调制放大和滤波放大后发送 对量化数据执行信道解码tec，检索发送信息。 与现有载波机制UWB无线通信技术相比，该方法不需要正交调制/解调和频谱移动等复杂的射频处理，模数转换的量化精度也大大降低， 成本和功率损耗大大降低; 与目前的脉冲机制UWB无线通信技术相比，本发明提供的方法大大提高了数据传输速率，提高了稳定性，可靠性和集成度。