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    • 1. 发明申请
    • CHANNEL INFORMATION FEEDBACK METHOD AND WIRELESS COMMUNICATION DEVICE USING THE SAME
    • 信道反馈方法和无线通信装置
    • US20130163645A1
    • 2013-06-27
    • US13338207
    • 2011-12-27
    • Ping-Heng KuoHsiang-Tsung KungPang-An Ting
    • Ping-Heng KuoHsiang-Tsung KungPang-An Ting
    • H04B7/02H04B1/38H04B17/00
    • H04B7/0478H04B7/0617H04B7/0663H04L25/03949
    • A channel information feedback method for multi-antenna system, and a wireless communication device using the same method are provided. The proposed method could reduce feedback overhead for multiple-input multiple-output (MIMO) wireless channel information, and is based on compressive sensing technique. Prior to sending back channel information, a receiver estimates the channel and multiplies the vectorized channel with a random matrix to generate compressed feedback content. Upon receiving the compressed feedback content at a transmitter, the channel information could be restored with signal recovery algorithms of compressive sensing technique. In the other embodiment, the proposed method further adaptively adjusts compression ratio of the compressed feedback content in accordance to the prevailing channel quality. Further, for slow-varying MIMO channels, there is proposed another channel information feedback method which switches between a fixed spasifying-basis and a signal-dependent sparsifying-basis.
    • 提供了一种用于多天线系统的信道信息反馈方法和使用相同方法的无线通信装置。 所提出的方法可以减少多输入多输出(MIMO)无线信道信息的反馈开销,并且基于压缩感测技术。 在发送信道信息之前,接收机估计信道并将矢量化信道与随机矩阵相乘以产生压缩反馈内容。 一旦在发射机处接收到压缩的反馈内容,可以利用压缩感测技术的信号恢复算法恢复信道信息。 在另一实施例中,所提出的方法进一步根据主流信道质量自适应地调整压缩反馈内容的压缩比。 此外,对于慢速变化的MIMO信道,提出了另一种信道信息反馈方法,其基于固定基于扩频的信号和基于信号的稀疏化。
    • 2. 发明授权
    • Channel information feedback method and wireless communication device using the same
    • 频道信息反馈方法和无线通信装置使用相同
    • US09178590B2
    • 2015-11-03
    • US13338207
    • 2011-12-27
    • Ping-Heng KuoHsiang-Tsung KungPang-An Ting
    • Ping-Heng KuoHsiang-Tsung KungPang-An Ting
    • H04B1/38H04L5/16H04B7/04H04L25/03H04B7/06
    • H04B7/0478H04B7/0617H04B7/0663H04L25/03949
    • A channel information feedback method for multi-antenna system, and a wireless communication device using the same method are provided. The proposed method could reduce feedback overhead for multiple-input multiple-output (MIMO) wireless channel information, and is based on compressive sensing technique. Prior to sending back channel information, a receiver estimates the channel and multiplies the vectorized channel with a random matrix to generate compressed feedback content. Upon receiving the compressed feedback content at a transmitter, the channel information could be restored with signal recovery algorithms of compressive sensing technique. In the other embodiment, the proposed method further adaptively adjusts compression ratio of the compressed feedback content in accordance to the prevailing channel quality. Further, for slow-varying MIMO channels, there is proposed another channel information feedback method which switches between a fixed sparcifying-basis and a signal-dependent sparcifying-basis.
    • 提供了一种用于多天线系统的信道信息反馈方法和使用相同方法的无线通信装置。 所提出的方法可以减少多输入多输出(MIMO)无线信道信息的反馈开销,并且基于压缩感测技术。 在发送信道信息之前,接收机估计信道并将矢量化信道与随机矩阵相乘以产生压缩反馈内容。 一旦在发射机处接收到压缩的反馈内容,可以利用压缩感测技术的信号恢复算法恢复信道信息。 在另一实施例中,所提出的方法进一步根据主流信道质量自适应地调整压缩反馈内容的压缩比。 此外,对于慢速变化的MIMO信道,提出了另一种信道信息反馈方法,其以固定的基于稀疏和基于信号的稀疏为基础进行切换。
    • 5. 发明申请
    • BEAM-FORMER SEARCHING METHOD AND CENTRAL UNIT USING THE METHOD
    • 使用该方法的波束成形器搜索方法和中心单元
    • US20120307926A1
    • 2012-12-06
    • US13149938
    • 2011-06-01
    • Ping-Heng KuoPang-An Ting
    • Ping-Heng KuoPang-An Ting
    • H04B7/02
    • H04B7/024H04B7/0617
    • A beam-former searching method and a central unit using the method are proposed. The proposed method is adapted for a coordinated multi-point transmission for macro-diversity or an interference alignment scheme, and includes following steps. A metaheuristic algorithm is used to search for precoders and postcoders respectively for B of collaborative transmitters and U of receivers, where U=B for interference alignment and U=1 for coordinated multi-point transmission for macro-diversity. Memory is initialized by generating solution vectors randomly Utility functions is computed respectively for the generated solution vectors and the generated solution vectors are sorted respectively according to the computed utility functions. A new solution vector is improvised iteratively until the number of iterations reaches a pre-configured algorithm termination upper limit. In addition, a solution vector is selected as an output according to the computed utility functions.
    • 提出了一种使用该方法的波束成形器搜索方法和中心单元。 所提出的方法适用于用于宏分集或干扰对准方案的协调多点传输,并且包括以下步骤。 一种元启发式算法用于分别搜索协作发射机B和接收机U的预编码器和后置编码器,其中U = B用于干扰对齐,U = 1用于宏分集的协调多点传输。 通过随机生成解向量来初始化存储器,分别为生成的解向量计算效用函数,并根据计算的效用函数对生成的解矢量进行排序。 一个新的解决方案向量是迭代迭代,直到迭代次数达到预先配置的算法终止上限。 另外,根据计算的效用函数选择解矢量作为输出。