会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明申请
    • CALIBRATION APPARATUS AND METHOD FOR MULTICELL MULTIPLE INPUT MULTIPLE OUTPUT TRANSMISSION IN MULTIPLE ANTENNA SYSTEM
    • 用于多天线系统中多输入多输出多输出传输的校准装置及方法
    • US20110103271A1
    • 2011-05-05
    • US12915814
    • 2010-10-29
    • Shuangfeng HANChi-Woo LIM
    • Shuangfeng HANChi-Woo LIM
    • H04J3/00H04W4/00
    • H04B7/024H04B17/12
    • A calibration apparatus and a calibration method for multicell Multiple Input Multiple Output (MIMO) transmission in a multiple antenna system are provided. More particularly, an operating method of a Mobile Station (MS) for performing calibration for multicell MIMO transmission in a multiple antenna system includes negotiating a multi-Base Station (BS) joint processing with a BS, receiving a control message including information instructing multi-BS calibration for sounding based on the multi-BS joint processing, from the BS; when receiving the control message involving the multi-BS joint processing, generating a second sounding sequence by mapping estimated phases of downlink channels per subcarrier of BSs to a first sounding sequence allocated from the BS, and transmitting the second sounding sequence, including the phases of the downlink channels per subcarrier, over a sounding symbol interval with respect to each of the BSs involving the multi-BS joint processing. Hence, feedback overhead in the calibration of the multicell MIMO transmission can be reduced.
    • 提供了一种用于多天线系统中的多输入多输入多输出(MIMO)传输的校准装置和校准方法。 更具体地说,用于在多天线系统中进行多单元MIMO传输的校准的移动台(MS)的操作方法包括:与BS协商多基站(BS)联合处理,接收包括指示多台天线的信息的控制消息, 基于BS的校准基于多BS联合处理,从BS; 当接收到涉及多BS联合处理的控制消息时,通过将BS的每个子载波的下行链路信道的估计相位映射到从BS分配的第一探测序列,并发送第二探测序列,生成第二探测序列, 相对于涉及多BS联合处理的每个BS的探测符号间隔,每个子载波的下行链路信道。 因此,可以减少多单元MIMO传输的校准中的反馈开销。
    • 8. 发明申请
    • APPARATUS AND METHOD FOR PERFORMANCE ENHANCEMENT IN OPEN LOOP MULTI CELL MIMO SYSTEM
    • 开环多单元MIMO系统中性能增强的装置和方法
    • US20120034911A1
    • 2012-02-09
    • US13196295
    • 2011-08-02
    • Shuangfeng HAN
    • Shuangfeng HAN
    • H04W4/00
    • H04W48/14H04B7/024H04B7/0417H04B7/0639
    • An apparatus and a method for operating a Mobile Station (MS) in a wireless communication system are provided. The method includes receiving a threshold for a gap of an average Receive (Rx) power between a neighboring Base Station (BS) and a serving BS, transmitting to the serving BS, identification information of a BS having the average power greater than a first value, receiving information of a BS involving joint processing generated using information of the BS having the average power greater than the first value, feeding Precoding Matrix Index (PMI) information of the BS involving the joint processing, back to the serving BS, receiving information indicating a PMI operation mode of the MS, from the serving BS, and determining a PMI operation mode according to the information indicating the PMI operation mode of the MS.
    • 提供了一种在无线通信系统中操作移动台(MS)的装置和方法。 该方法包括:接收相邻基站(BS)和服务BS之间的平均接收(Rx)功率间隙的阈值,向服务BS发送平均功率大于第一值的BS的识别信息 接收涉及使用平均功率大于第一值的BS的信息产生的联合处理的BS的信息,将涉及联合处理的BS的预编码矩阵索引(PMI)信息提供给服务BS,接收信息指示 来自服务BS的MS的PMI操作模式,以及根据指示MS的PMI操作模式的信息来确定PMI操作模式。
    • 9. 发明申请
    • METHOD FOR SER APPROXIMATION FOR OSTBC IN DISTRIBUTED WIRE COMMUNICATION SYSTEMS
    • 用于分布式电线通信系统中OSTBC的伺服近似的方法
    • US20080205538A1
    • 2008-08-28
    • US12034723
    • 2008-02-21
    • Shuangfeng HANSeong-Taek HwangHan-Lim Lee
    • Shuangfeng HANSeong-Taek HwangHan-Lim Lee
    • H04B7/12
    • H04L1/20H04B7/0443H04L1/0618Y02D70/444
    • A method for Symbol Error Rate (SER) approximation of an SER-based transmission power allocation operation for an Orthogonal Space Time Block Code in a DWCS equipped with multiple transmission Distributed Antennas (DA) geographically dispersed at random. The method for SER approximation includes the steps of: setting multiple combinable antenna subsets from the multiple DAs; selecting a quasi-optimal antenna subset Ag (1≦g≦2n−1) having a quasi-optimal power allocation weight wg based on predetermined power allocation, for each of the set multiple antenna subsets; and calculating an SER approximation value of the selected quasi-optimal antenna subset by applying a Probability Density Function (PDF) of a Signal-to-Noise Ratio (SNR) to the OSTBC SER having symbol constellation of a predetermined modulation scheme. The output of the SER approximation value can be output to a transmitter, or to a space-time encoder of a central processor for optimal power transmission.
    • 一种用于在配备有随机分布的多传输分布式天线(DA)的DWCS中的正交空间时间块码的基于SER的发射功率分配操作的符号误码率(SER)近似方法。 SER近似的方法包括以下步骤:从多个DA设置多个可组合天线子集; 选择具有准最优功率分配权重w(g)的准最优天线子集A 1(1 <= G 2 = 基于预定功率分配,对于所设置的多个天线子集中的每一个; 以及通过将具有信号噪声比(SNR)的概率密度函数(PDF))应用于具有预定调制方案的符号星座图的OSTBC SER来计算所选择的准最佳天线子集的SER近似值。 SER近似值的输出可以输出到中央处理器的发射机或时空编码器,以实现最佳的功率传输。