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    • 8. 发明申请
    • METHOD AND APPARATUS FOR ESTIMATING CHANNEL BASED ON IMPLICIT TRAINING SEQUENCES
    • 基于内隐训练序列估计信道的方法和装置
    • WO2007029142A2
    • 2007-03-15
    • PCT/IB2006/052988
    • 2006-08-29
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.SOUTHEAST UNIVERSITYYANG, LuxiLI, Yuanjie
    • YANG, LuxiLI, Yuanjie
    • H04L25/02
    • H04L25/0204H04B7/04H04L25/0228H04L25/0244
    • The present invention provides a channel estimation method and apparatus based on implicit training sequences for use in wireless communication systems, characterized in that stationary training sequences are superimposed with information sequences for transmission at the transmitting side and channel estimation is performed at the receiving side by using the uncorrelated characteristic between the training sequences and the information sequences, that is, channel estimation is done based on the principle that the estimation result of channel parameter converges to a Wiener solution under the condition that the training sequences and information sequences in the transmission signals are uncorrelated. The method of the invention comprises steps of: obtaining a set of training sequences comprising a plurality of subsets of training sequences, each of the plurality of subsets is generated based on a known initial training sequence and a predetermined channel order; calculating the cross-correlation matrix for the subsets of training sequences and the corresponding inverse matrix; calculating the cross-correlation matrix for the set of training sequences and the received signals; and estimating channel parameters based on the inverse cross-correlation matrix for the subsets of training sequences and the cross-correlation matrix for the set of training sequences and the received signals.
    • 本发明提供了一种基于用于无线通信系统的隐式训练序列的信道估计方法和装置,其特征在于,固定的训练序列与信息序列叠加,以便在发射侧进行传输,并且信道估计 是利用训练序列与信息序列之间的不相关特性在接收端进行的,即根据信道参数估计结果收敛于维纳解的原理进行信道估计,其条件是训练序列 并且传输信号中的信息序列是不相关的。 本发明的方法包括以下步骤:获得包括多个训练序列子集的一组训练序列,基于已知的初始训练序列和预定的信道顺序来生成多个子集中的每一个; 为训练序列的子集和相应的逆矩阵计算互相关矩阵; 计算该组训练序列和接收信号的互相关矩阵; 以及基于用于训练序列的子集的逆互相关矩阵和用于该组训练序列和接收信号的互相关矩阵来估计信道参数。
    • 9. 发明申请
    • METHOD AND DEVICE FOR CHANNEL ESTIMATION IN CDMA COMMUNICATION SYSTEM
    • CDMA通信系统中信道估计的方法和装置
    • WO2006082546A1
    • 2006-08-10
    • PCT/IB2006/050299
    • 2006-01-27
    • SOUTHEAST UNIVERSITYKONINKLIJKE PHILIPS ELECTRONICS N.V.YANG, LuxiLI, Yuanjie
    • YANG, LuxiLI, Yuanjie
    • H04L25/02
    • H04L25/0238
    • A method and device for channel estimation are disclosed. The method comprises the steps of classifying sub-vectors of a decorrelated sample signal in a channel into two subsets, determining centers of the two subsets, and estimating a channel vector of the channel according to the determined centers of the subsets. The method can be implemented by the device. The method and device can only utilize a first-order statistic information of the received signal to perform the accumulate operation with an amount of calculation much less than that of other effective blind estimation algorithms, and are particularly suitable for implementation by logic circuits. Furthermore, satisfactory estimation accuracy can be obtained by only using a very short data frame.
    • 公开了一种用于信道估计的方法和装置。 该方法包括以下步骤:将信道中解相关样本信号的子向量分成两个子集,确定两个子集的中心,以及根据确定的子集的中心估计信道的信道向量。 该方法可以由设备实现。 该方法和装置只能利用接收信号的一阶统计信息来执行累加运算,其计算量远远小于其他有效盲估计算法的计算量,特别适用于逻辑电路的实现。 此外,仅通过使用非常短的数据帧可以获得令人满意的估计精度。
    • 10. 发明申请
    • SYSTEMS AND METHODS FOR WIRELESS COMMUNICATION WITH PER-BEAM SIGNAL SYNCHRONIZATION
    • 用于具有每波束信号同步的无线通信的系统和方法
    • WO2018076362A1
    • 2018-05-03
    • PCT/CN2016/104104
    • 2016-10-31
    • SOUTHEAST UNIVERSITY
    • GAO, XiqiYOU, LiWANG, Wenjin
    • H04B7/04
    • H04L27/2655H04B7/01H04B7/0408H04B7/0413H04B7/0617H04L5/0048H04W56/005
    • Signal transmitting/receiving electronic devices or terminals in the present disclosure are configured to conduct per-beam signal synchronization in massive MIMO communication with a signal receiving/transmitting device or base station. During the massive MIMO communication, the devices or terminals are configured to transmit/receive signals via a set of beams to or from the signal receiving/transmitting device or base station. For beam domain signal of each individual beam of the plurality beams, the devices or terminals are configured to determine target time adjustments based on time shifts of the beam domain signals induced by multipath effect and target frequency adjustments based on frequency offsets of the beam domain signals induced by the Doppler effect; adjust time independent variables of the beam domain signals by the time adjustments; and adjust frequency independent variables of the beam domain signals by the frequency adjustments. Further, per-beam synchronized BDMA massive MIMO transmission method is disclosed, which provides a solution to efficient and reliable wireless communications with high mobility and/or high carrier frequency.
    • 本公开中的信号发送/接收电子设备或终端被配置为在与信号接收/发送设备或基站的大规模MIMO通信中进行每波束信号同步。 在大规模MIMO通信期间,设备或终端被配置为经由一组到达或来自信号接收/发送设备或基站的波束发送/接收信号。 对于多个波束中的每个单独波束的波束域信号,设备或终端被配置为基于由多径效应引起的波束域信号的时移和基于波束域信号的频率偏移的目标频率调整来确定目标时间调整 由多普勒效应引起; 通过时间调整来调整波束域信号的时间独立变量; 并通过频率调整来调整波束域信号的频率独立变量。 此外,还公开了每波束同步BDMA大量MIMO传输方法,其提供了高移动性和/或高载波频率的高效可靠无线通信的解决方案。