Optimum perturbation apparatus and method in a multi-antenna multi-user communication system
    1.
    发明授权
    Optimum perturbation apparatus and method in a multi-antenna multi-user communication system 有权
    多天线多用户通信系统中的最佳扰动装置和方法

    公开(公告)号:US07974349B2

    公开(公告)日:2011-07-05

    申请号:US11650470

    申请日:2007-01-08

    IPC分类号: H04L27/00

    摘要: An optimum perturbation apparatus and method in a multi-antenna, multi-user communication system are provided. In the optimum perturbation method, upon receipt of modulation symbols, channel responses are decomposed into eigenvalues and eigenvectors by Single Value Decompositin (SVD) and a distortion value of the modulation symbols is estimated using the eigenvectors and the eigenvalues to minimize noise and interference power. The modulation symbols are precoded by combining the modulation symbols with the estimated distortion value.

    摘要翻译: 提供了一种多天线多用户通信系统中的最佳扰动装置和方法。 在最佳扰动方法中,在接收到调制符号后,通过单值解码(SVD)将信道响应分解为特征值和特征向量,并使用特征向量和特征值估计调制符号的失真值,以最小化噪声和干扰功率。 通过将调制符号与估计的失真值组合来对调制符号进行预编码。

    Optimum perturbation apparatus and method in a multi-antenna multi-user communication system
    2.
    发明申请
    Optimum perturbation apparatus and method in a multi-antenna multi-user communication system 有权
    多天线多用户通信系统中的最佳扰动装置和方法

    公开(公告)号:US20100232531A1

    公开(公告)日:2010-09-16

    申请号:US11650470

    申请日:2007-01-08

    IPC分类号: H04L1/02

    摘要: An optimum perturbation apparatus and method in a multi-antenna, multi-user communication system are provided. In the optimum perturbation method, upon receipt of modulation symbols, channel responses are decomposed into eigenvalues and eigenvectors by Single Value Decompositin (SVD) and a distortion value of the modulation symbols is estimated using the eigenvectors and the eigenvalues to minimize noise and interference power. The modulation symbols are precoded by combining the modulation symbols with the estimated distortion value.

    摘要翻译: 提供了一种多天线多用户通信系统中的最佳扰动装置和方法。 在最佳扰动方法中,在接收到调制符号后,通过单值解码(SVD)将信道响应分解为特征值和特征向量,并使用特征向量和特征值估计调制符号的失真值,以最小化噪声和干扰功率。 通过将调制符号与估计的失真值组合来对调制符号进行预编码。

    Apparatus and method for communicating data in hybrid diversity mode in broadband wireless communication system
    6.
    发明申请
    Apparatus and method for communicating data in hybrid diversity mode in broadband wireless communication system 审中-公开
    用于在宽带无线通信系统中以混合分集方式传送数据的装置和方法

    公开(公告)号:US20070191065A1

    公开(公告)日:2007-08-16

    申请号:US11650357

    申请日:2007-01-05

    IPC分类号: H04M1/00

    摘要: Provided is an apparatus and method for communicating data in a hybrid diversity mode in a broadband wireless communication system. In a method for transmitting data to a subscriber station (SS) in the broadband wireless communication system, null subbands are determined using feedback information received from the SS. TX data to be transmitted to the SS are mapped to a diversity zone from which the null subbands has been excluded. The mapped data are OFDM-modulated and transmitted to the SS. In this way, frequency subbands with poor channel conditions are excluded from data transmission. Accordingly, it is possible to enhance the FER performance and transmit data at a high MCS level.

    摘要翻译: 提供了一种用于在宽带无线通信系统中以混合分集模式传送数据的装置和方法。 在宽带无线通信系统中向用户站(SS)发送数据的方法中,使用从SS接收的反馈信息来确定空子带。 要发送到SS的TX数据被映射到已经排除了空子带的分集区域。 映射的数据被OFDM调制并传输到SS。 以这种方式,信道条件较差的频率子带从数据传输中排除。 因此,可以提高FER性能并在高MCS级别发送数据。

    Apparatus and method for eliminating multi-user interference
    7.
    发明申请
    Apparatus and method for eliminating multi-user interference 有权
    消除多用户干扰的装置和方法

    公开(公告)号:US20070155336A1

    公开(公告)日:2007-07-05

    申请号:US11601049

    申请日:2006-11-17

    IPC分类号: H04B7/00 H04M1/00

    摘要: Provided are an apparatus and method for eliminating multi-user interference in a codebook-based beamforming system. A transmitter for providing a service to multi-users in the codebook-based beamforming system includes a beamformer for generating beamformed user signals by multiplying transmit data of users, to whom the service is to be provided, by corresponding weighting factor vectors using feedback information; a null space generator for generating a null space matrix orthogonal to weighting factor vectors of other users; and a projector for projecting the beamformed user signals on the corresponding null space matrix and transmitting the resulting signals through a plurality of antennas. Because the multi-user signals can maintain orthogonality, the performance degradation caused by the multi-user interference can be prevented.

    摘要翻译: 提供了一种用于消除基于码本的波束成形系统中的多用户干扰的装置和方法。 用于在基于码本的波束成形系统中为多用户提供服务的发射机包括波束形成器,用于通过使用反馈信息将相应的加权因子向量乘以要提供服务的用户的发送数据来生成波束形成的用户信号; 零空间生成器,用于生成与其他用户的加权因子矢量正交的零空间矩阵; 以及用于将波束形成的用户信号投影在相应的零空间矩阵上并通过多个天线发送所得到的信号的投影仪。 因为多用户信号可以保持正交性,所以可以防止由多用户干扰引起的性能下降。

    Apparatus and method for eliminating multi-user interference
    8.
    发明授权
    Apparatus and method for eliminating multi-user interference 有权
    消除多用户干扰的装置和方法

    公开(公告)号:US07907912B2

    公开(公告)日:2011-03-15

    申请号:US11601049

    申请日:2006-11-17

    IPC分类号: H04B17/00

    摘要: Provided are an apparatus and method for eliminating multi-user interference in a codebook-based beamforming system. A transmitter for providing a service to multi-users in the codebook-based beamforming system includes a beamformer for generating beamformed user signals by multiplying transmit data of users, to whom the service is to be provided, by corresponding weighting factor vectors using feedback information; a null space generator for generating a null space matrix orthogonal to weighting factor vectors of other users; and a projector for projecting the beamformed user signals on the corresponding null space matrix and transmitting the resulting signals through a plurality of antennas. Because the multi-user signals can maintain orthogonality, the performance degradation caused by the multi-user interference can be prevented.

    摘要翻译: 提供了一种用于消除基于码本的波束成形系统中的多用户干扰的装置和方法。 用于在基于码本的波束成形系统中为多用户提供服务的发射机包括波束形成器,用于通过使用反馈信息将相应的加权因子向量乘以要提供服务的用户的发送数据来生成波束形成的用户信号; 零空间生成器,用于生成与其他用户的加权因子矢量正交的零空间矩阵; 以及用于将波束形成的用户信号投影在相应的零空间矩阵上并通过多个天线发送所得到的信号的投影仪。 因为多用户信号可以保持正交性,所以可以防止由多用户干扰引起的性能下降。