User selection apparatus and method for SDMA in a MIMO system
    73.
    发明授权
    User selection apparatus and method for SDMA in a MIMO system 有权
    用于MIMO系统中的SDMA的用户选择装置和方法

    公开(公告)号:US07894858B2

    公开(公告)日:2011-02-22

    申请号:US11441371

    申请日:2006-05-25

    IPC分类号: H04M1/00

    摘要: An apparatus and method for selecting at least two users to be serviced in SDMA in an SDMA wireless communication system are provided. All users are ordered according to a predetermined rule and all possible user combinations each having at least two users are created from the ordered users. An investigation limit number is set using the capacity of a jth user combination. Or a total investigation number is reduced by comparing the interference-reflected SNR decrements of users with an investigation threshold. Therefore, the computation volume for selecting SDMA users is decreased.

    摘要翻译: 提供了一种在SDMA无线通信系统中选择要在SDMA中服务的至少两个用户的装置和方法。 根据预定规则对所有用户进行排序,并且从订购的用户创建每个具有至少两个用户的所有可能的用户组合。 使用第j个用户组合的容量设置调查限制号。 或者通过将用户的干扰反射SNR递减与调查阈值进行比较来减少总调查数。 因此,选择SDMA用户的计算量减少。

    Apparatus and method for transmitting a sub-channel signal in a communication system using an orthogonal frequency division multiple access scheme
    75.
    发明授权
    Apparatus and method for transmitting a sub-channel signal in a communication system using an orthogonal frequency division multiple access scheme 有权
    使用正交频分多址方案在通信系统中发送子信道信号的装置和方法

    公开(公告)号:US07715483B2

    公开(公告)日:2010-05-11

    申请号:US11077858

    申请日:2005-03-11

    IPC分类号: H04L27/28

    摘要: A method of allocating sub-channel signal interleaving patterns to BSs forming a wireless communication system that divides a frequency band into a plurality of sub-carriers and including a plurality of sub-channels, which are a set of predetermined adjacent sub-carriers. The method includes: creating a basic orthogonal sequence having a length identical to a number of the sub-carriers forming the sub-channel; creating a plurality of sequences having a same length as the basic orthogonal sequence by cyclic-shifting the basic orthogonal sequence a predetermined number of times or performing a modulo operation based on a number of the sub-carriers forming the sub-channel, after adding a predetermined offset to the cyclic-shifted basic orthogonal sequence; selecting a predetermined number of sequences corresponding to a number of the BSs from among the plurality of sequences; and allocating the selected sequences as the sub-channel signal interleaving patterns for the BSs.

    摘要翻译: 将子信道信号交织模式分配给形成无线通信系统的无线通信系统的方法,所述无线通信系统将频带划分成多个子载波,并且包括作为一组预定相邻子载波的多个子信道。 该方法包括:创建具有与形成子信道的子载波的数量相同的长度的基本正交序列; 通过将基本正交序列循环移位预定次数或者基于构成子信道的子载波的数量执行模运算来创建与基本正交序列具有相同长度的多个序列, 对循环移位的基本正交序列的预定偏移; 从所述多个序列中选择与所述BS的数量相对应的预定数量的序列; 并且将所选择的序列分配为用于BS的子信道信号交织模式。

    Apparatus and method for controlling transmission power in communication systems using orthogonal frequency division multiple access scheme
    76.
    发明授权
    Apparatus and method for controlling transmission power in communication systems using orthogonal frequency division multiple access scheme 有权
    使用正交频分多址方案来控制通信系统中的发射功率的装置和方法

    公开(公告)号:US07412242B2

    公开(公告)日:2008-08-12

    申请号:US11106222

    申请日:2005-04-14

    IPC分类号: H04Q7/20

    摘要: Disclosed is a method for controlling transmission power to be allocated to sub-carrier signals in a cellular communication system capable of dividing a frequency band into a plurality of sub-carrier bands and multiplexing the sub-carrier signals of the sub-carrier bands based on multiple frequency reuse factors. The method comprises the steps of determining a target Signal to Interference and Noise Ratio (SINR) of sub-carrier signals employing a first frequency reuse factor selected from the multiple frequency reuse factors; determining a weight of the sub-carrier signals employing the first frequency reuse factor and a weight of other sub-carrier signals employing frequency reuse factors other than the first frequency reuse factor corresponding to the target SINR; and applying the determined weights to the sub-carrier signals employing the first frequency reuse factor and the sub-carrier signals employing frequency reuse factors other than the first frequency reuse factor, thereby controlling the transmission power.

    摘要翻译: 公开了一种在蜂窝通信系统中控制分配给子载波信号的发送功率的方法,该蜂窝通信系统能够将频带划分成多个子载波频带,并且基于子载波频带的子载波信号进行复用 多频率复用因子。 该方法包括以下步骤:采用从多个频率复用因子中选择的第一频率复用因子确定子载波信号的目标信号与干扰和噪声比(SINR); 使用第一频率复用因子的子载波信号的权重和使用除了与目标SINR相对应的第一频率复用因子之外的频率复用因子的其他子载波信号的权重; 以及使用所述第一频率重用因子的子载波信号和采用除了所述第一频率重用因子之外的频率复用因子的子载波信号来应用所​​确定的权重,由此控制所述发射功率。

    Apparatus and method for detecting feedback information in a wireless communication system
    77.
    发明申请
    Apparatus and method for detecting feedback information in a wireless communication system 有权
    一种用于在无线通信系统中检测反馈信息的装置和方法

    公开(公告)号:US20070070967A1

    公开(公告)日:2007-03-29

    申请号:US11523856

    申请日:2006-09-20

    IPC分类号: H04B7/216

    CPC分类号: H04L27/2647

    摘要: An apparatus and method for determining feedback information detection in a broadband wireless communication system are provided. In the detection determining apparatus, a demodulator correlates each of tiles carrying received feedback information with an orthogonal vector including a pilot symbol in each possible codeword, each tile being a predetermined number of subcarriers, and calculates the squares of the absolute values of the correlations. A codeword correlation calculator sums the squares of the absolute value of the correlations of the tiles for each possible codeword. A detection decider determines whether to perform detection on the feedback information based on the maximum of the sums.

    摘要翻译: 提供了一种用于在宽带无线通信系统中确定反馈信息检测的装置和方法。 在检测判定装置中,解调器将携带接收反馈信息的每个瓦片与包括每个可能码字中的导频符号的正交矢量相关联,每个瓦片是预定数量的子载波,并且计算相关绝对值的平方。 码字相关计算器将每个可能码字的瓦片的相关性的绝对值的平方相加。 检测判定器基于总和的最大值确定是否对反馈信息进行检测。