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    Method and system for adaptive control of sub-carriers
    1.
    发明授权
    Method and system for adaptive control of sub-carriers 有权
    子载波的自适应控制方法和系统

    公开(公告)号：US07388923B2

    公开(公告)日：2008-06-17

    申请号：US11147092

    申请日：2005-06-07

    申请人： Masaya Fukuta ,  Hiroshi Hayashi ,  Kevin Lynn Baum ,  Vijay Nangia

    发明人： Masaya Fukuta ,  Hiroshi Hayashi ,  Kevin Lynn Baum ,  Vijay Nangia

    IPC分类号： H04K1/10 ,  H04J11/00 ,  H04B7/208

    CPC分类号： H04L5/0007 ,  H04L5/0016 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0064 ,  H04L5/008 ,  H04L5/0087

    摘要： A method and system for adaptive control of sub-carriers is useful for increasing frequency diversity gain to improve bit error rate performance in an Interleaved Frequency Division Multiple Access (IFDMA) system. The method includes selecting a combination of a Repetition Factor (RF) and a repetition block size (Q), from possible combinations of a RF and a Q, based on a number of users (Nu) (step 1405). A Spreading Factor (SF), Forward Error Correction (FEC) coding rate (R), or modulation order (M) based on the Nu is then determined (step 1410). Control signals are then provided based on the RF and Q, and based on the SF, R, or M (step 1415).

    摘要翻译： 用于子载波的自适应控制的方法和系统对于增加频率分集增益是有用的，以提高交错频分多址（IFDMA）系统中的误码率性能。 该方法包括从RF和Q的可能组合中，基于用户数量（N N）来选择重复因子（RF）和重复块大小（Q）的组合 步骤1405）。 然后确定基于N N的扩频因子（SF），前向纠错（FEC）编码率（R）或调制阶数（M）（步骤1410）。 然后基于RF和Q，并且基于SF，R或M（步骤1415）提供控制信号。

    METHOD AND APPARATUS FOR INITIAL ACQUISITION AND CELL SEARCH FOR AN OFDMA SYSTEM
    2.
    发明申请
    METHOD AND APPARATUS FOR INITIAL ACQUISITION AND CELL SEARCH FOR AN OFDMA SYSTEM 有权
    用于OFDMA系统的初始获取和细胞搜索的方法和装置

    公开(公告)号：US20110268104A1

    公开(公告)日：2011-11-03

    申请号：US13183725

    申请日：2011-07-15

    申请人： Hidenori Akita ,  Kevin L. Baum ,  Brian K. Classon ,  Masaya Fukuta ,  Hiroshi Hayashi ,  Vijay Nangia ,  Robert T. Love ,  Kenneth A. Stewart

    发明人： Hidenori Akita ,  Kevin L. Baum ,  Brian K. Classon ,  Masaya Fukuta ,  Hiroshi Hayashi ,  Vijay Nangia ,  Robert T. Love ,  Kenneth A. Stewart

    IPC分类号： H04W56/00

    CPC分类号： H04W48/16 ,  H04J11/0073 ,  H04L5/0007 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2656 ,  H04L27/266 ,  H04L27/2663

    摘要： A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted within a localized portion of a bandwidth of the OFDMA signal, the synchronization channel signal having predetermined time domain symmetry within the localized portion of the bandwidth and including information for providing at least partial cell identification information. The synchronization channel signal enables an initial acquisition and cell search method with low computational load which provides OFDMA symbol timing detection and frequency error detection and frame boundary detection and cell specific information detection in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.

    摘要翻译： 提供了一种用于发送包括在OFDMA信号的带宽的局部部分内发送的同步信道信号的正交频域多址（OFDMA）信号的方法和装置，所述同步信道信号在所述OFDMA信号的局部部分内部具有预定的时域对称性 所述带宽并且包括用于提供至少部分小区识别信息的信息。 同步信道信号能够实现具有低计算负荷的初始采集和小区搜索方法，其在支持多个系统带宽的同步和非同步的OFDMA系统中提供OFDMA符号定时检测和频率误差检测以及帧边界检测和小区特定信息检测 系统，大的小区索引和具有短和长循环前缀长度的OFDMA符号结构。

    Method and apparatus for initial acquisition and cell search for an OFDMA system
    3.
    发明申请
    Method and apparatus for initial acquisition and cell search for an OFDMA system 有权
    用于OFDMA系统的初始采集和小区搜索的方法和装置

    公开(公告)号：US20070183307A1

    公开(公告)日：2007-08-09

    申请号：US11351306

    申请日：2006-02-08

    申请人： Hidenori Akita ,  Kevin Baum ,  Brian Classon ,  Masaya Fukuta ,  Hiroshi Hayashi ,  Vijay Nangia ,  Robert Love ,  Kenneth Stewart

    发明人： Hidenori Akita ,  Kevin Baum ,  Brian Classon ,  Masaya Fukuta ,  Hiroshi Hayashi ,  Vijay Nangia ,  Robert Love ,  Kenneth Stewart

    IPC分类号： H04J3/06 ,  H04J11/00

    CPC分类号： H04W48/16 ,  H04J11/0073 ,  H04L5/0007 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2656 ,  H04L27/266 ,  H04L27/2663

    摘要： A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted within a localized portion of a bandwidth of the OFDMA signal (818), the synchronization channel signal having predetermined time domain symmetry within the localized portion of the bandwidth (816) and including information for providing at least partial cell identification information (812). The synchronization channel signal enables an initial acquisition and cell search method with low computational load which provides OFDMA symbol timing detection and frequency error detection (1112) and frame boundary detection and cell specific information detection (1114) in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.

    摘要翻译： 提供了一种用于发送包括在OFDMA信号（818）的带宽的局部部分内发送的同步信道信号的正交频域多址（OFDMA）信号的方法和装置，所述同步信道信号具有在 带宽的局部部分（816）并且包括用于提供至少部分小区识别信息的信息（812）。 同步信道信号支持在支持多个系统带宽的OFDMA系统中提供OFDMA符号定时检测和频率误差检测（1112）和帧边界检测和小区特定信息检测（1114）的具有低计算负荷的初始采集和小区搜索方法， 同步和非同步的系统，大的信元索引和具有短和长循环前缀长度的OFDMA符号结构。

    Method and system for adaptive control of sub-carriers
    4.
    发明申请
    Method and system for adaptive control of sub-carriers 有权
    子载波的自适应控制方法和系统

    公开(公告)号：US20060274839A1

    公开(公告)日：2006-12-07

    申请号：US11147092

    申请日：2005-06-07

    申请人： Masaya Fukuta ,  Hiroshi Hayashi ,  Kevin Baum ,  Vijay Nangia

    发明人： Masaya Fukuta ,  Hiroshi Hayashi ,  Kevin Baum ,  Vijay Nangia

    IPC分类号： H04K1/10

    CPC分类号： H04L5/0007 ,  H04L5/0016 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0064 ,  H04L5/008 ,  H04L5/0087

    摘要： A method and system for adaptive control of sub-carriers is useful for increasing frequency diversity gain to improve bit error rate performance in an Interleaved Frequency Division Multiple Access (IFDMA) system. The method includes selecting a combination of a Repetition Factor (RF) and a repetition block size (Q), from possible combinations of a RF and a Q, based on a number of users (Nu) (step 1405). A Spreading Factor (SF), Forward Error Correction (FEC) coding rate (R), or modulation order (M) based on the Nu is then determined (step 1410). Control signals are then provided based on the RF and Q, and based on the SF, R, or M (step 1415).

    摘要翻译： 用于子载波的自适应控制的方法和系统对于增加频率分集增益是有用的，以提高交错频分多址（IFDMA）系统中的误码率性能。 该方法包括从RF和Q的可能组合中，基于用户数量（N N）来选择重复因子（RF）和重复块大小（Q）的组合 步骤1405）。 然后确定基于N N的扩频因子（SF），前向纠错（FEC）编码率（R）或调制阶数（M）（步骤1410）。 然后基于RF和Q，并且基于SF，R或M（步骤1415）提供控制信号。

    Method and apparatus for a synchronization channel in an OFDMA system
    8.
    发明申请
    Method and apparatus for a synchronization channel in an OFDMA system 有权
    OFDMA系统中同步信道的方法和装置

    公开(公告)号：US20070183306A1

    公开(公告)日：2007-08-09

    申请号：US11351304

    申请日：2006-02-08

    申请人： Hidenori Akita ,  Kevin Baum ,  Brian Classon ,  Masaya Fukuta ,  Hiroshi Hayashi ,  Vijay Nangia ,  Robert Love ,  Kenneth Stewart

    发明人： Hidenori Akita ,  Kevin Baum ,  Brian Classon ,  Masaya Fukuta ,  Hiroshi Hayashi ,  Vijay Nangia ,  Robert Love ,  Kenneth Stewart

    IPC分类号： H04J3/06 ,  H04J11/00

    CPC分类号： H04L5/005 ,  H04J11/0073 ,  H04L5/0007 ,  H04L5/0064 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2656

    摘要： A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted within a localized portion of a bandwidth of the OFDMA signal (818), the synchronization channel signal having predetermined time domain symmetry within the localized portion of the bandwidth (816). The synchronization channel signal enables an initial acquisition and cell search method with low computational load which provides OFDMA symbol timing detection and frequency error detection by differential processing of sequence elements of the synchronization channel signal (1112) and frame boundary detection and cell specific information detection (1114) in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.

    摘要翻译： 提供了一种用于发送包括在OFDMA信号（818）的带宽的局部部分内发送的同步信道信号的正交频域多址（OFDMA）信号的方法和装置，所述同步信道信号具有在 带宽的本地化部分（816）。 同步信道信号能够实现具有低计算负荷的初始采集和小区搜索方法，其通过差分处理同步信道信号（1112）的序列元素和帧边界检测和小区特定信息检测（提供OFDMA符号定时检测和频率误差检测） 1114）在支持多个系统带宽（同步和非同步系统）的OFDMA系统中，具有短循环前缀长度和长循环前缀长度的大小区索引和OFDMA符号结构。

    Method and apparatus for a synchronization channel in an OFDMA system
    9.
    发明授权
    Method and apparatus for a synchronization channel in an OFDMA system 有权
    OFDMA系统中同步信道的方法和装置

    公开(公告)号：US07706249B2

    公开(公告)日：2010-04-27

    申请号：US11351304

    申请日：2006-02-08

    申请人： Hidenori Akita ,  Kevin L. Baum ,  Brian K. Classon ,  Masaya Fukuta ,  Hiroshi Hayashi ,  Vijay Nangia ,  Robert T. Love ,  Kenneth A. Stewart

    发明人： Hidenori Akita ,  Kevin L. Baum ,  Brian K. Classon ,  Masaya Fukuta ,  Hiroshi Hayashi ,  Vijay Nangia ,  Robert T. Love ,  Kenneth A. Stewart

    IPC分类号： H04J11/00

    CPC分类号： H04L5/005 ,  H04J11/0073 ,  H04L5/0007 ,  H04L5/0064 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2656

    摘要： A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted within a localized portion of a bandwidth of the OFDMA signal (818), the synchronization channel signal having predetermined time domain symmetry within the localized portion of the bandwidth (816). The synchronization channel signal enables an initial acquisition and cell search method with low computational load which provides OFDMA symbol timing detection and frequency error detection by differential processing of sequence elements of the synchronization channel signal (1112) and frame boundary detection and cell specific information detection (1114) in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.

    摘要翻译： 提供了一种用于发送包括在OFDMA信号（818）的带宽的局部部分内发送的同步信道信号的正交频域多址（OFDMA）信号的方法和装置，所述同步信道信号具有在 带宽的本地化部分（816）。 同步信道信号能够实现具有低计算负荷的初始采集和小区搜索方法，其通过差分处理同步信道信号（1112）的序列元素和帧边界检测和小区特定信息检测（提供OFDMA符号定时检测和频率误差检测） 1114）在支持多个系统带宽（同步和非同步系统）的OFDMA系统中，具有短循环前缀长度和长循环前缀长度的大小区索引和OFDMA符号结构。