Apparatus and method for using guard band as data subcarrier in communication system supporting frequency overlay
    73.
    发明申请
    Apparatus and method for using guard band as data subcarrier in communication system supporting frequency overlay 有权
    在支持频率覆盖的通信系统中使用保护频带作为数据副载波的装置和方法

    公开(公告)号:US20090232071A1

    公开(公告)日:2009-09-17

    申请号:US12381178

    申请日:2009-03-09

    IPC分类号: H04W72/04

    摘要: A method and apparatus for using a guard band as a data subcarrier in a communication system supporting frequency overlay are provided. In a method of operating mobile station for using a guard band as a subcarrier for signal transmission in a communication system supporting frequency overlay, the method includes searching for a first center frequency located at a position corresponding to an integer multiple of a subcarrier spacing, after searching for the first center frequency, receiving information indicating the numbers n1 and n2 of first additional subcarriers, and performing a first network entry process by using all subcarriers including the first additional subcarriers.

    摘要翻译: 提供了一种在支持频率叠加的通信系统中使用保护频带作为数据子载波的方法和装置。 在支持频率覆盖的通信系统中,使用保护频带作为用于信号传输的子载波的移动站的操作方法包括:搜索位于对应于子载波间隔的整数倍的位置的第一中心频率, 搜索第一中心频率,接收指示第一附加子载波的数字n1和n2的信息,以及通过使用包括第一附加子载波的全部子载波来执行第一网络进入处理。

    Apparatus and method for canceling inter-symbol interference in a broadband wireless communication system
    74.
    发明授权
    Apparatus and method for canceling inter-symbol interference in a broadband wireless communication system 有权
    用于消除宽带无线通信系统中符号间干扰的装置和方法

    公开(公告)号:US07573944B2

    公开(公告)日:2009-08-11

    申请号:US11254681

    申请日:2005-10-20

    IPC分类号: H04L27/28

    CPC分类号: H04L27/2607

    摘要: An apparatus and method for canceling ISI in a broadband wireless communication system are provided. In a transmitter of the broadband wireless communication system, a controller acquires a CP length, a puncturing pattern, and a time sample interval according to a delay spread. A puncturer punctures coded data in the puncturing pattern. An IFFT processor IFFT-processes the punctured coded data and outputs sample data. A CP inserter generates an OFDM symbol by inserting a copy of a last part of the sample data before the sample data. Here, the length of the last part of the sample data is equal to the CP length. A D/A converter converts the OFDM symbol to an analog signal at a sampling rate determined by the time sample interval.

    摘要翻译: 提供一种用于在宽带无线通信系统中取消ISI的装置和方法。 在宽带无线通信系统的发射机中,控制器根据延迟扩展获取CP长度,穿孔模式和时间采样间隔。 穿孔者在穿孔图案中穿孔编码数据。 IFFT处理器IFFT处理穿孔编码数据并输出采样数据。 CP插入器通过在样本数据之前插入样本数据的最后一部分的副本来生成OFDM符号。 这里,样本数据的最后一部分的长度等于CP长度。 D / A转换器以由时间采样间隔确定的采样率将OFDM符号转换为模拟信号。

    Apparatus and method for supporting relay service in multihop relay broadband wireless access (BWA) communication system
    77.
    发明申请
    Apparatus and method for supporting relay service in multihop relay broadband wireless access (BWA) communication system 有权
    在多跳中继宽带无线接入(BWA)通信系统中支持中继业务的装置和方法

    公开(公告)号:US20070280292A1

    公开(公告)日:2007-12-06

    申请号:US11803158

    申请日:2007-05-11

    IPC分类号: H04J3/16

    摘要: Apparatus and method for transmitting and detecting subchannel constitution scheme information in a multihop relay Broadband Wireless Access (BWA) communication system. The method includes determining a subchannel constitution scheme for fixing a start zone of BW-RS link according to channel information (e.g., channel condition information, interference, and mobility), transmitting determined subchannel constitution scheme information of the start zone using a FCH preamble, detecting physical channel signals of subchannel constitution schemes from the received FCH preamble, checking preset codes, and detecting the subchannel constitution scheme of the start zone using the detected physical channel signals of the subchannel constitution schemes and the codes. The subchannel constitution scheme of the BS-RS link can be adaptively applied based on the channel information.

    摘要翻译: 用于在多跳中继宽带无线接入(BWA)通信系统中发送和检测子信道构成方案信息的装置和方法。 该方法包括:根据信道信息(例如,信道条件信息,干扰和移动性)确定用于固定BW-RS链路的起始区域的子信道构成方案,使用FCH前导码发送确定的起始区域的子信道构成方案信息, 使用检测到的子信道构成方案和代码的物理信道信号,从接收的FCH前同步码检测子信道构成方案的物理信道信号,检查预设码,以及检测起始区的子信道构成方案。 可以基于信道信息自适应地应用BS-RS链路的子信道构成方案。