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
    • 2. 发明申请
    • Method and System for a Double Search User Group Selection Scheme with Range Reduction in TDD Multiuser MIMO Downlink Transmission
    • 用于TDD多用户MIMO下行链路传输的双重搜索用户组选择方案和范围缩减的方法和系统
    • US20130003619A1
    • 2013-01-03
    • US13611957
    • 2012-09-12
    • Jun ZhengChengjin ZhangPieter van Rooyen
    • Jun ZhengChengjin ZhangPieter van Rooyen
    • H04J3/00
    • H04B7/0452H04B7/0408H04B7/0413H04L5/1469
    • Certain aspects of a method and system for processing signals in a communication system may include maximizing system capacity for a time division duplex (TDD) multiple-input multiple-output (MIMO) system, based on reducing a search range within which to find a group of signals having maximum channel gain. At least one of: a first signal for a first user and a second signal for a second user may be selected, which are both within the reduced search range, and which provides a maximum system capacity. The first signal for the first user may be selected from the reduced search range corresponding to a channel gain that is greater than a channel gain corresponding to a remaining portion of the reduced search range. The reduced search range may be generated by sorting a plurality of signals based on a channel gain corresponding to each of the plurality of signals.
    • 用于处理通信系统中的信号的方法和系统的某些方面可以包括:基于减少在其中寻找组的搜索范围来最大化时分双工(TDD)多输入多输出(MIMO)系统的系统容量 的信号具有最大的信道增益。 可以选择以下中的至少一个:可以选择第一用户的第一信号和第二用户的第二信号,这两者都在缩小搜索范围内,并且提供最大的系统容量。 用于第一用户的第一信号可以从对应于比还原搜索范围的剩余部分对应的信道增益大的信道增益的缩小搜索范围中选择。 可以通过基于与多个信号中的每个信号相对应的信道增益对多个信号进行排序来生成缩小搜索范围。
    • 3. 发明授权
    • Channel quantization for multiuser diversity
    • 多用户分集的信道量化
    • US08300723B2
    • 2012-10-30
    • US13099721
    • 2011-05-03
    • Jun ZhengChengjin ZhangPieter Van Rooyen
    • Jun ZhengChengjin ZhangPieter Van Rooyen
    • H04B7/02
    • H04B7/0452H04B7/0417H04B7/06H04B7/0626H04B7/0658
    • A method and system for channel quantization for multiuser diversity are provided. A quantizer may utilize quantization levels determined based on an objective function J that corresponds to a performance metric for a finite-rate feedback multiuser downlink communication system. The quantization levels may be obtained based on the results of maximizing the objective function J by means of an optimization algorithm. The optimization algorithm may be a multivariate optimization algorithm that may be implemented utilizing an iterative approach. The quantizer may utilize the quantization levels to quantize channel state information (CSI) to achieve multiuser diversity in the finite-rate feedback multiuser system. The performance metric may be based on signal-to-noise ratio (SNR), bit error rate (BER), and/or system capacity. The quantization levels may be utilized in a multiuser system where distributed quantization is needed for optimal selection.
    • 提供了一种用于多用户分集的信道量化的方法和系统。 量化器可以利用基于与有限速率反馈多用户下行链路通信系统的性能度量相对应的目标函数J确定的量化级。 可以基于通过优化算法使目标函数J最大化的结果来获得量化级别。 优化算法可以是可以利用迭代方法来实现的多元优化算法。 量化器可以利用量化级来量化信道状态信息(CSI)以在有限速率反馈多用户系统中实现多用户分集。 性能度量可以基于信噪比(SNR),误码率(BER)和/或系统容量。 量化级别可以用于需要分布式量化来进行最优选择的多用户系统中。
    • 6. 发明授权
    • Double search algorithm of user group selection for multiuser MIMO downlink transmission
    • 用户组选择双用户MIMO下行链路传输的双重搜索算法
    • US07899421B2
    • 2011-03-01
    • US11231501
    • 2005-09-21
    • Jun ZhengChengjin ZhangSeverine Catreux-ErcegVinko ErcegPieter RouxPieter Van Rooyen
    • Jun ZhengChengjin ZhangSeverine Catreux-ErcegVinko ErcegPieter RouxPieter Van Rooyen
    • H04B1/18
    • H04B7/0697H04B7/0452H04B7/0626
    • A method and system for a double search algorithm of user group selection for multiuser MIMO downlink transmission are provided. The use of optimal brute-force user group selection may require high computational expense. A first search operation may be based on a first user having a channel gain greater than that of other users, while a second search operation may be based on a second user having a channel gain greater than that of the remaining users. A maximized system capacity may be determined based on the maximized system capacities determined in the first and second search loop. A receiver pair associated with the maximized system capacity may be selected as the user group. The double search algorithm may reduce the computational complexity while achieving performances that may exceed the TDMA scheme and be similar to that of systems with ideal CSI at the transmitter.
    • 提供了一种用于多用户MIMO下行链路传输的用户组选择双重搜索算法的方法和系统。 使用最佳暴力用户组选择可能需要较高的计算费用。 第一搜索操作可以基于具有大于其他用户的信道增益的信道增益的第一用户,而第二搜索操作可以基于具有大于剩余用户的信道增益的信道增益的第二用户。 可以基于在第一和第二搜索循环中确定的最大化的系统容量来确定最大化的系统容量。 可以选择与最大系统容量相关联的接收机对作为用户组。 双重搜索算法可以降低计算复杂度,同时实现可能超过TDMA方案的性能,并且类似于在发射机处具有理想CSI的系统的性能。