专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20060215773A1 Method for eliminating reception interference signal of space-time block coded orthogonal frequency division-multiplexing system in high-speed mobile channel 有权
标题翻译：用于消除高速移动通道中时空块编码的正交频分复用系统的接收干扰信号的方法
公开(公告)号：US20060215773A1
公开(公告)日：2006-09-28
申请号：US11086441
申请日：2005-03-23
申请人： Won Jeon , Jeong Seo , Jung Wee , Dong Kim
发明人： Won Jeon , Jeong Seo , Jung Wee , Dong Kim
IPC分类号： H04K1/10
CPC分类号： H04L27/2647 , H04B7/0891 , H04L1/0631 , H04L1/0668
摘要： Disclosed herein is a method for eliminating the reception interference signal of a Space-Time Block Coded Orthogonal Frequency-Division Multiplexing (STBC-OFDM) system in a high-speed mobile channel. The method includes the following steps. At the first step, the gain of a channel combined at a receiving end is estimated in the case of using the STBC-OFDM system on a time-varying channel. At the second step, first temporary decision symbols are obtained by performing comparison on the estimated gain. At the third step, second temporary decision symbols are obtained using the first temporary decision symbols. At the fourth step, self-channel interference (SCI) terms are eliminated using the second temporary decision symbols and third temporary decision symbols are obtained. At the fifth step, final data symbols are obtained using the third temporary decision symbols.
摘要翻译：这里公开了一种消除高速移动通道中的空时块编码正交频分复用（STBC-OFDM）系统的接收干扰信号的方法。该方法包括以下步骤。在第一步骤中，在时变信道上使用STBC-OFDM系统的情况下，估计在接收端组合的信道的增益。在第二步骤，通过对估计的增益进行比较来获得第一临时判定符号。在第三步骤中，使用第一临时决策符号获得第二临时决策符号。在第四步骤中，使用第二临时判定符号来消除自信道干扰（SCI）项，并获得第三临时决策符号。在第五步骤中，使用第三临时决策符号获得最终数据符号。

2. 发明申请

US20050286406A1 Hybrid type channel estimation method and system for mobile environment 有权
标题翻译：混合型信道估计方法和移动环境系统
公开(公告)号：US20050286406A1
公开(公告)日：2005-12-29
申请号：US11107969
申请日：2005-04-18
申请人： Won Jeon , Jeong Seo , Jung Wee , Dong Kim , Youn Lee
发明人： Won Jeon , Jeong Seo , Jung Wee , Dong Kim , Youn Lee
IPC分类号： H04B7/00 , H04J11/00 , H04L1/20
CPC分类号： H04L1/20 , H04L1/208 , H04L25/0228 , H04L25/0236 , H04L25/025 , H04L27/2647
摘要： Disclosed herein is a hybrid channel estimation method and system for an Orthogonal Frequency Division Multiplexing (OFDM) wireless communication system. The hybrid channel estimation method includes the steps of acquiring a first channel coefficient using decision-directed channel estimation; acquiring a second channel coefficient using pilot-symbol-aided channel estimation; and calculating the final channel coefficient of a received signal by multiplying the first and second coefficients by first and second multiplication coefficients, respectively, and adding the multiplication results. The step of acquiring the first channel coefficient using the decision-directed channel estimation includes the steps of acquiring an initial channel coefficient by processing a long training symbol using a Least Square (LS) method; generating data by equalizing, demodulating and modulating a fast Fourier transformed new symbol using a previously estimated channel coefficient; and acquiring a new channel coefficient by dividing the new symbol by the data.
摘要翻译：本文公开了一种用于正交频分复用（OFDM）无线通信系统的混合信道估计方法和系统。混合信道估计方法包括以下步骤：使用决策信道估计来获取第一信道系数; 使用导频符号辅助信道估计获取第二信道系数; 以及分别通过将第一和第二系数乘以第一和第二乘法系数来计算接收信号的最终信道系数，并且相加乘法结果。使用决策信道估计获取第一信道系数的步骤包括以下步骤：通过使用最小二乘法（LS）方法处理长训练符号来获取初始信道系数; 通过使用先前估计的信道系数均衡，解调和调制快速傅里叶变换的新符号来产生数据; 并通过将新符号除以数据来获取新的信道系数。

3. 发明申请

US20050249111A1 Method and apparatus for detecting STBC-OFDM signals in time-variant channels 有权
标题翻译：用于在时变通道中检测STBC-OFDM信号的方法和装置
公开(公告)号：US20050249111A1
公开(公告)日：2005-11-10
申请号：US11123084
申请日：2005-05-06
申请人： Won Jeon , Jeong Seo , Jung Wee , Ki Kwon , Jong Paik , Dong Kim
发明人： Won Jeon , Jeong Seo , Jung Wee , Ki Kwon , Jong Paik , Dong Kim
IPC分类号： H04B7/02 , H04J11/00 , H04L1/06 , H04L25/02 , H04L27/26
CPC分类号： H04L27/2647 , H04B7/02 , H04L1/0643 , H04L25/022
摘要： The present invention relates to a method and apparatus for detecting STBC-OFDM signals in time-variant channels. The method includes a step of demodulating STBC-OFDM modulation signals into OFDM reception symbols using Fast Fourier Transform (FFT); a step of estimating a frequency response for each sub-channel; an STBC decoding step of calculating decision variables determining the A transmit data symbols that are transmitted during the B OFDM symbol periods for each sub-channel; and a step of determining the transmit data symbols based on the decision variables calculated at the STBC decoding step. In this case, the decision variables are calculated using a linear equation that allows a squared Euclidean distance from OFDM reception symbols, which are demodulated during the B symbol periods, to have a local minimum for each decision variable when the STBC encoding and the frequency responses estimated during the B OFDM symbol periods are applied.
摘要翻译：本发明涉及用于检测时变信道中的STBC-OFDM信号的方法和装置。该方法包括使用快速傅里叶变换（FFT）将STBC-OFDM调制信号解调为OFDM接收符号的步骤; 估计每个子信道的频率响应的步骤; STBC解码步骤，用于计算确定在每个子信道的B OFDM符号周期期间发送的A个发送数据符号的决定变量; 以及基于在STBC解码步骤计算出的判定变量来确定发送数据符号的步骤。在这种情况下，使用线性方程来计算决策变量，该线性方程允许在B符号周期期间被解调的来自OFDM接收符号的平方欧几里得距离在STBC编码和频率响应时具有每个决定变量的局部最小值在B OFDM符号周期期间被估计。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式