Method and apparatus for encoding and decoding data
    41.
    发明授权
    Method and apparatus for encoding and decoding data 有权
    用于对数据进行编码和解码的方法和装置

    公开(公告)号:US07493548B2

    公开(公告)日:2009-02-17

    申请号:US11275937

    申请日:2006-02-06

    Abstract: A structured parity-check matrix H is proposed, wherein H is an expansion of a base matrix Hb and wherein Hb comprises a section Hb1 and a section Hb2, and wherein Hb2 comprises a first part comprising a column hb having an odd weight greater than 2, and a second part comprising matrix elements for row i, column j equal to 1 for i=j, 1 for i=j+1, and 0 elsewhere. The expansion of the base matrix Hb uses identical submatrices for 1s in each column of the second part H′b2, and the expansion uses paired submatrices for an even number of 1s in hb.

    Abstract translation: 提出了一种结构化奇偶校验矩阵H,其中H是基本矩阵Hb的扩展,其中Hb包括部分Hb1和部分Hb2,并且其中Hb2包括第一部分,其包括奇数重量大于2的列hb ,第二部分包括用于行i的矩阵元素,列j对于i = j等于1,对于i = j + 1为1,在其他地方为0。 基本矩阵Hb的扩展在第二部分H'b2的每列中使用相同的子矩阵1s,并且扩展在hb中使用偶数个1s的配对子矩阵。

    Method and apparatus for interleaving sequence elements of an OFDMA synchronization channel
    42.
    发明申请
    Method and apparatus for interleaving sequence elements of an OFDMA synchronization channel 有权
    用于交织OFDMA同步信道的序列元素的方法和装置

    公开(公告)号:US20070183391A1

    公开(公告)日:2007-08-09

    申请号:US11351275

    申请日:2006-02-08

    Abstract: A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted including a plurality of sequence elements intereleaved in time and frequency (610, 640). The synchronization channel signal sequence elements enable an initial acquisition and cell search method with low computational load by providing predetermined time domain symmetry (702, 704) for common sequence elements in OFDMA symbol periods (620, 660) for OFDMA symbol timing detection and frequency error 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.

    Abstract translation: 提供了一种用于发送包括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,包括在时间和频率上互相嵌合的多个序列元素(610,640)。 同步信道信号序列元件通过为OFDMA符号周期(620,660)中的公共序列元素提供用于OFDMA符号定时检测和频率误差的预定时域对称性(702,704),能够实现具有低计算负荷的初始采集和小区搜索方法 支持多系统带宽(同步和非同步系统)的OFDMA系统中的检测,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 implementing spatial division multiple access (
    45.
    发明申请
    Method and apparatus for implementing spatial division multiple access ("SDMA") to communicate user data and backhaul data with the same wireless time-frequency resources 有权
    用于实现空分多址(“SDMA”)以相同无线时频资源传送用户数据和回程数据的方法和装置

    公开(公告)号:US20070160019A1

    公开(公告)日:2007-07-12

    申请号:US11330474

    申请日:2006-01-12

    CPC classification number: H04W92/12 H04W4/18 H04W16/28

    Abstract: A system [100] includes a base station [105] to communicate wireless data with at least one user terminal [125, 130] within a cell serviced by the base station [105]. A central backhaul access point [135] communicates wireless backhaul data with the base station [105]. At least a first portion of the wireless data and a second portion of the wireless backhaul data is communicated via Spatial Division Multiple Access (“SDMA”), and the first portion of the wireless data utilizes at least some same time-frequency resources as the second portion of the wireless backhaul data.

    Abstract translation: 系统[100]包括基站(105),用于将基站(105)中的无线数据与由基站[105]所服务的小区内的至少一个用户终端[125,130]进行通信。 中央回程接入点[135]与基站[105]通信无线回程数据。 无线数据的至少第一部分和无线回程数据的第二部分通过空分多址(“SDMA”)进行通信,无线数据的第一部分利用至少一些相同的时频资源,如 无线回程数据的第二部分。

    Method and apparatus for scheduling frequency selective and frequency diverse allocations in mobile communications systems
    46.
    发明申请
    Method and apparatus for scheduling frequency selective and frequency diverse allocations in mobile communications systems 失效
    用于在移动通信系统中调度频率选择和频率不同分配的方法和装置

    公开(公告)号:US20070159993A1

    公开(公告)日:2007-07-12

    申请号:US11330475

    申请日:2006-01-12

    CPC classification number: H04W72/048 H04W64/00 H04W88/08

    Abstract: A base station (105) includes a scheduler (220) to determine a location of a user terminal (110) within a cell (125) of a wireless system (100). The cell has a cell boundary (125). The scheduler (220) also determines a subcarrier frequency diverse resource allocation for a call on the user terminal (110) in response to the location of the user terminal (110) being within a predetermined distance from an edge of the cell boundary (125). The scheduler (220) further determines a subcarrier frequency selective resource allocation for the call on the user terminal (110) in response to the location of the user terminal (110) being beyond a predetermined distance from the edge of the cell boundary. The base station (105) also includes a transceiver (215) to transmit the call according to the subcarrier frequency diverse resource allocation and the subcarrier frequency selective resource allocation.

    Abstract translation: 基站(105)包括调度器(220),用于确定无线系统(100)的小区(125)内的用户终端(110)的位置。 单元格具有单元格边界(125)。 调度器(220)还响应于距离小区边界(125)的边缘在预定距离内的用户终端(110)的位置,确定用户终端(110)上的呼叫的副载波频率不同资源分配, 。 调度器(220)还响应于用户终端(110)的距离小区边界边缘超出预定距离的方式,确定用户终端(110)上的呼叫的副载波频率选择性资源分配。 基站(105)还包括根据子载波频率不同资源分配和子载波频率选择性资源分配来发送呼叫的收发机(215)。

    Method and apparatus for channel quality feedback within a communication system
    49.
    发明申请
    Method and apparatus for channel quality feedback within a communication system 有权
    通信系统内信道质量反馈的方法和装置

    公开(公告)号:US20050289256A1

    公开(公告)日:2005-12-29

    申请号:US10423243

    申请日:2003-04-25

    Abstract: A base station (101) will request the transmission of quality information from a particular remote stations (102, 103) only when data is queued to be transmitted to the remote stations. Once a remote station begins the transmission of channel quality information, the transmission of such information continues until the data transmission is successfully delivered to the remote station. The base station receives the channel quality information and adjusts the modulation and coding of the remote stations accordingly. Where data is transmitted simultaneously to a plurality of remote stations, a set of queues (303) for the multiple remote stations is maintained, and based on queue status, a channel quality request messages is sent to a sub-set of remote stations with data queued.

    Abstract translation: 只有当数据排队等待发送到远程站时,基站(101)将请求来自特定远程站(102,103)的质量信息的传输。 一旦远程站开始传输信道质量信息,这种信息的传输将继续进行,直到数据传输成功传送到远程站。 基站接收信道质量信息并相应地调整远程站的调制和编码。 在数据同时发送到多个远程站的情况下,维护用于多个远程站的一组队列(303),并且基于队列状态,将信道质量请求消息发送到具有数据的远程站的子集 排队

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