Apparatus and method for transmitting a sub-channel signal in a communication system using an orthogonal frequency division multiple access scheme
    3.
    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。

    Method and apparatus for allocating subcarriers in a broadband wireless communication system using multiple carriers
    7.
    发明申请
    Method and apparatus for allocating subcarriers in a broadband wireless communication system using multiple carriers 审中-公开
    在使用多个载波的宽带无线通信系统中分配副载波的方法和装置

    公开(公告)号:US20050201476A1

    公开(公告)日:2005-09-15

    申请号:US11077855

    申请日:2005-03-11

    IPC分类号: H04L27/26 H04K1/10

    摘要: A method and apparatus for efficiently allocating subcarriers for data and/or a control signal requiring frequency diversity within the same symbol and for data or a control signal which needs to be transmitted in a frequency band with successive subcarriers, so as to transmit the signals simultaneously, satisfying the different requirements of frequency diversity and successive subcarrier allocation. Therefore, signal interference is reduced for a data signal having a frequency diversity gain and requiring a high data rate or a signal interfered by other signals.

    摘要翻译: 一种用于有效地分配用于数据的子载波和/或需要相同符号内的频率分集的控制信号的方法和装置,以及需要在具有连续子载波的频带中发送的数据或控制信号,以便同时发射信号 满足频率分集和连续子载波分配的不同要求。 因此,对于具有频率分集增益并且需要高数据速率或被其他信号干扰的信号的数据信号,信号干扰减小。

    Apparatus and method for controlling transmission power in communication systems using orthogonal frequency division multiple access scheme
    8.
    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。

    Method and apparatus for generating preamble sequence for adaptive antenna system in orthogonal frequency division multiple access communication system
    10.
    发明授权
    Method and apparatus for generating preamble sequence for adaptive antenna system in orthogonal frequency division multiple access communication system 有权
    用于在正交频分多址通信系统中生成用于自适应天线系统的前导码序列的方法和装置

    公开(公告)号:US07567639B2

    公开(公告)日:2009-07-28

    申请号:US11116904

    申请日:2005-04-28

    IPC分类号: H04L7/00

    摘要: Disclosed is a method and an apparatus for generating a preamble sequence for an adaptive antenna system supporting a space division multiple access in an OFDMA communication system. Particularly, disclosed is a method for forming a preamble sequence identifying each of a plurality of mobile subscriber stations located within a cell or a sector of a communication system which includes a plurality of sub-channels assigned to the mobile subscriber stations, each of the sub-channels including a plurality of bins each of which includes n number of contiguous subcarriers in a frequency domain, the preamble sequence being transmitted before each of the sub-channels is transmitted, the method including the step of generating a preamble sequence by phase-shifting a predetermined sequence according to a predetermined phase shift sequence in the frequency domain.

    摘要翻译: 公开了一种用于在OFDMA通信系统中生成支持空分多址的自适应天线系统的前同步码序列的方法和装置。 特别地,公开了一种用于形成标识位于通信系统的小区或扇区内的多个移动用户站中的每一个的前导序列的方法,该通信系统包括分配给移动用户站的多个子信道,每个子 - 信道,包括多个信道,每个信道包括频域中的n个连续子载波,所述前导序列在每个子信道被发送之前被发送,所述方法包括以下步骤:通过相移产生前同步码序列 根据频域中的预定相移序列的预定序列。