公开(公告)号：US20100227560A1

公开(公告)日：2010-09-09

申请号：US12714249

申请日：2010-02-26

申请人： Gengshi WU ,  Feng LI ,  Nian PENG ,  Shufan HUANG ,  Jing YANG

发明人： Gengshi WU ,  Feng LI ,  Nian PENG ,  Shufan HUANG ,  Jing YANG

IPC分类号： H04B15/00 ,  H04B17/00

CPC分类号： G01S5/0221 ,  G01S5/0215 ,  H04W56/0075 ,  H04W56/0085

摘要： Method and apparatus are provided for estimating Time of Arrival (“TOA”). The method includes: performing channel estimation according to a Normal Burst (“NB”) free of interference and a local training sequence and generating a channel estimate, performing TOA estimation according to the channel estimate, and adjusting a synchronization position of the current NB according to a TOA estimation result. Interference to signals is cancelled before the TOA estimation, thus overcoming energy estimate deviation arising from interference in a strongly interfering radio environment, as occurs in the prior art, and preventing the impact on the TOA estimation. The disclosed methods and apparatus provide for more accurate energy estimates in a strongly interfering radio environment. The technical solution under the present invention does not require adjustment of the method of adjusting the search window.

摘要翻译： 提供了估计到达时间（“TOA”）的方法和装置。 该方法包括：根据无干扰的正常突发（“NB”）和本地训练序列进行信道估计，并产生信道估计，根据信道估计执行TOA估计，并根据信道估计调整当前NB的同步位置 到TOA估计结果。 在TOA估计之前，对信号的干扰被消除，从而克服由于在现有技术中发生的强干扰无线电环境中的干扰引起的能量估计偏差，并且防止对TOA估计的影响。 所公开的方法和装置在强干扰无线电环境中提供更准确的能量估计。 本发明的技术方案不需要调整搜索窗口的调整方法。

公开(公告)号：US20120142302A1

公开(公告)日：2012-06-07

申请号：US13368801

申请日：2012-02-08

申请人： Gengshi WU ,  Jing Yang ,  Nian Peng ,  Jiajing Zhou ,  Shufan Huang ,  Congli Mao

发明人： Gengshi WU ,  Jing Yang ,  Nian Peng ,  Jiajing Zhou ,  Shufan Huang ,  Congli Mao

IPC分类号： H04B15/00

CPC分类号： H03H17/0664

摘要： In the field of communications technologies, a down sampling method and a down sampling device are provided, to enable the energy of a down sampling point obtained in down sampling to be as large as possible. The down sampling method includes: extracting energy statistical values of sampling point sets in a current period; selecting a sampling position corresponding to a sampling point set with the largest energy statistical value as a down sampling position; and performing down sampling according to the down sampling position.

摘要翻译： 在通信技术领域，提供下采样方法和下采样装置，以使得在下采样中获得的下采样点的能量尽可能大。 下采样方法包括：提取当前采样点集的能量统计值; 选择与具有最大能量统计值的采样点相对应的采样位置作为下采样位置; 并根据下采样位置执行下采样。

公开(公告)号：US20090201980A1

公开(公告)日：2009-08-13

申请号：US12423085

申请日：2009-04-14

申请人： Gengshi WU ,  Jing YANG

发明人： Gengshi WU ,  Jing YANG

IPC分类号： H04Q1/20

CPC分类号： H04B17/345

摘要： A method and device for estimating a Gaussian white noise power in a channel and a receiver are provided. The method includes performing a multi-path search on a received signal to find out paths of the signal; performing a noise estimation on one of the paths to acquire a total noise power of the path; performing an inter-path interference noise estimation on N paths spaced apart from the path by an integral number of chips to obtain an inter-path interference noise power of a single path of the signal, where N is an integer greater than or equal to 1; and subtracting the inter-path interference noise power from the total noise power to obtain the Gaussian white noise power. Through the technical solution of the disclosure, the Gaussian white noise power in a channel is obtained with a higher accuracy, so that the performance of equalization is enhanced.

摘要翻译： 提供了一种用于估计信道和接收机中的高斯白噪声功率的方法和装置。 该方法包括对接收到的信号执行多路径搜索以找出该信号的路径; 对所述路径之一执行噪声估计以获得所述路径的总噪声功率; 在与路径间隔一定数量的码片的N个路径上执行路径间干扰噪声估计，以获得信号的单个路径的路径间干扰噪声功率，其中N是大于或等于1的整数 ; 并从总噪声功率中减去路径间干扰噪声功率以获得高斯白噪声功率。 通过本公开的技术方案，以更高的精度获得信道中的高斯白噪声功率，从而提高均衡性能。

公开(公告)号：US20120020440A1

公开(公告)日：2012-01-26

申请号：US13191151

申请日：2011-07-26

申请人： Gengshi WU ,  Fengyu SUN ,  Meng HUA ,  Chunling ZHANG ,  Shurong JIAO

发明人： Gengshi WU ,  Fengyu SUN ,  Meng HUA ,  Chunling ZHANG ,  Shurong JIAO

IPC分类号： H04L27/06

CPC分类号： H04L25/0228

摘要： A method and a device for determining a smooth window length in channel estimation is provided. The method includes: obtaining autocorrelation values of pilot signals, where the autocorrelation values include first autocorrelation values and second autocorrelation values, at least two first autocorrelation values exist, and at least one second autocorrelation value exists; determining a speed range according to symbols of the first autocorrelation values or the symbols of the first autocorrelation values and a ratio value between the second autocorrelation value and one of the first autocorrelation values; and determining the smooth window length according to the speed range. Through the method provided in embodiments of the present invention, the problems caused by a fixed smooth window length may be avoided, and this improves system performance.

摘要翻译： 提供了一种用于确定信道估计中的平滑窗口长度的方法和装置。 该方法包括：获得导频信号的自相关值，其中自相关值包括第一自相关值和第二自相关值，存在至少两个第一自相关值，并且存在至少一个第二自相关值; 根据所述第一自相关值的符号或所述第一自相关值的符号以及所述第二自相关值与所述第一自相关值之一之间的比值确定速度范围; 并根据速度范围确定平滑的窗口长度。 通过本发明实施例提供的方法，可以避免固定平滑窗口长度引起的问题，从而提高系统性能。

公开(公告)号：US20070230697A1

公开(公告)日：2007-10-04

申请号：US11756685

申请日：2007-06-01

申请人： Gengshi WU ,  Zhiwei MO ,  Qing CHU

发明人： Gengshi WU ,  Zhiwei MO ,  Qing CHU

IPC分类号： H04N7/167

CPC分类号： H04N7/16 ,  H04N21/242 ,  H04N21/4302

摘要： A method and system for implementing synchronization between a receiving end and a source end of broadcast television service. The method includes: determining, at a transmitting station, time difference information between the source end and the transmitting station; and transmitting, by the transmitting station, time information of the transmitting station and the time difference information to the receiving end; implementing, by the receiving end, synchronization between the receiving end and the source end according to the time difference information and the time information of the transmitting station. With the method, synchronization between the source end and the receiving end in a broadcast television service network may be realized so that the receiving end may learn the accurate initial time information for receiving program streams transmitted from the program source. With the method, energy waste due to in-advance turn-on of receiving end device for receiving a program may be avoided.

摘要翻译： 一种用于实现广播电视服务的接收端和源端之间的同步的方法和系统。 该方法包括：在发送站确定源端与发送站之间的时差信息; 并且由所述发送站将所述发送站的时间信息和所述时差信息发送到所述接收端; 根据时差信息和发送台的时间信息，由接收端实现接收端与源端之间的同步。 利用该方法，可以实现广播电视服务网络中的源端和接收端之间的同步，使得接收端可以学习用于接收从节目源发送的节目流的准确的初始时间信息。 通过该方法，可以避免由于接收终端装置的预先接通引起的能量浪费用于接收程序。