Cell identifier encoding and decoding methods and apparatus
    11.
    发明申请
    Cell identifier encoding and decoding methods and apparatus 有权
    小区标识符编码和解码方法和装置

    公开(公告)号:US20080080439A1

    公开(公告)日:2008-04-03

    申请号:US11540784

    申请日:2006-09-29

    IPC分类号: H04Q7/24

    摘要: In an embodiment, a wireless communication system (100, FIG. 1) includes one or more nodes (102-108) and one or more user equipments (UE) (110). A node may apply (502, FIG. 5) a cell-specific spreading code to a cell identifier, which indicates an identity of a cell (113, FIG. 1) serviced by the node. The node may insert (504, FIG. 5), into a frame (200, FIG. 2), at least one synchronization channel symbol, which corresponds to the spread cell identifier, and the node may transmit (506, FIG. 5) the frame over an air interface. A UE may receive (702, FIG. 7) a frame from the air interface. The UE may despread (708) the spread cell identifier, and acquire (712) a cell identifier corresponding to a particular cell.

    摘要翻译: 在一个实施例中,无线通信系统(100,图1)包括一个或多个节点(102-108)和一个或多个用户设备(UE)(110)。 节点可以将小区特定扩展码应用(502,图5)到小区标识符,小区标识符指示由节点服务的小区(113,图1)的身份。 节点可以将(504,图5)插入到帧(200,图2)中,对应于扩展小区标识符的至少一个同步信道符号,并且节点可以发送(图5的506) 框架通过空中接口。 UE可以从空中接口接收(702,图7)帧。 UE可以解扩(708)扩展小区标识符,并获取对应于特定小区的小区标识(712)。

    User equipment frequency allocation methods and apparatus
    12.
    发明授权
    User equipment frequency allocation methods and apparatus 有权
    用户设备频率分配方法和装置

    公开(公告)号:US08219092B2

    公开(公告)日:2012-07-10

    申请号:US11542512

    申请日:2006-10-02

    IPC分类号: H04W36/00

    CPC分类号: H04W16/30 H04W72/048

    摘要: In an embodiment, a wireless communication system (100, FIG. 1) includes one or more nodes (102-108) and one or more user equipments (UE) (130-134). A node may service a cell (110-116). A UE may be classified (802, FIG. 8) into a cell-edge UE group when the UE is within in a cell-edge region (504, 506, 508, FIG. 5) of a cell. The cell-edge UE group may be allocated at least one first frequency range within an available bandwidth (600, 700, FIGS. 6 and 7). A UE may be reclassified (808, FIG. 8) into a cell-center UE group based on at least one indicator of UE performance. The cell-center UE group may be allocated at least one second frequency range within the available bandwidth.

    摘要翻译: 在一个实施例中,无线通信系统(100,图1)包括一个或多个节点(102-108)和一个或多个用户设备(UE)(130-134)。 节点可以服务小区(110-116)。 当UE在小区的小区边缘区域(504,508,508,图5)内)时,可以将UE划分为小区边缘UE组(802,图8)。 小区边缘UE组可以在可用带宽(600,700,图6和图7)内分配至少一个第一频率范围。 UE可以基于UE性能的至少一个指示符重新分类(图8的808)到小区中心UE组。 小区中心UE组可以在可用带宽内分配至少一个第二频率范围。

    Method of providing a data signal for channel estimation and circuit thereof
    13.
    发明授权
    Method of providing a data signal for channel estimation and circuit thereof 有权
    提供用于信道估计的数据信号的方法及其电路

    公开(公告)号:US08014457B2

    公开(公告)日:2011-09-06

    申请号:US12183762

    申请日:2008-07-31

    IPC分类号: H04K1/10

    摘要: A received signal having pilots is converted to a first signal in the frequency domain having the pilots. The pilots are extracted from the first signal to obtain extracted pilots to form a second signal. The second signal is used to provide a first estimate of a channel. The first estimate is converted to the time domain. Noise is removed from the first estimate in the time domain to provide a second estimate of the channel in the time domain. An autocorrelation of the channel in the frequency domain is determined using the second estimate of the channel. Extension signals are determined using the autocorrelation. The extension signals are appended to the first estimate of the channel to obtain a third estimate of the channel. The third estimate is used to provide a data signal in the frequency domain.

    摘要翻译: 具有导频的接收信号在具有导频的频域中被转换为第一信号。 从第一信号提取导频以获得提取的导频以形成第二信号。 第二信号用于提供信道的第一估计。 第一个估计值被转换为时域。 在时域中从第一估计中去除噪声,以提供时域中的信道的第二估计。 使用信道的第二估计来确定频域中的信道的自相关。 扩展信号使用自相关来确定。 扩展信号附加到信道的第一估计,以获得信道的第三估计。 第三个估计用于提供频域中的数据信号。

    METHOD FOR ESTIMATING CHANNEL STATISTICS IN AN OFDM RECEIVER
    14.
    发明申请
    METHOD FOR ESTIMATING CHANNEL STATISTICS IN AN OFDM RECEIVER 有权
    在OFDM接收机中估计信道统计的方法

    公开(公告)号:US20100061468A1

    公开(公告)日:2010-03-11

    申请号:US12204975

    申请日:2008-09-05

    申请人: Ahsan U. Aziz Sili Lu

    发明人: Ahsan U. Aziz Sili Lu

    IPC分类号: H04L27/08

    摘要: A method of estimating channel statistics includes storing a plurality of pilot symbols from a plurality of received signals, establishing a reference for correlation; computing instantaneous correlations for each time lag of each of the plurality of pilot symbols relative to the reference, providing a table comprising non-isotropic scattering correlation values, computing current refined correlations using previous refined correlations and instantaneous correlations, comparing current refined correlations to the table of correlation values, and choosing correlation values from the table based on the step of comparing current refined correlations to the table.

    摘要翻译: 估计信道统计的方法包括从多个接收信号中存储多个导频符号,建立相关参考; 计算所述多个导频符号中的每一个相对于该参考的每个时滞的瞬时相关性,提供包括非各向同性散射相关值的表,使用先前精细相关和瞬时相关来计算当前精细化相关性,将当前精细相关与该表进行比较 的相关值,并且基于将当前精细相关性与表进行比较的步骤从表中选择相关值。

    System and method for reducing edge effect
    15.
    发明申请
    System and method for reducing edge effect 有权
    减少边缘效应的系统和方法

    公开(公告)号:US20080101483A1

    公开(公告)日:2008-05-01

    申请号:US11589877

    申请日:2006-10-31

    申请人: Ahsan U. Aziz

    发明人: Ahsan U. Aziz

    IPC分类号: H04K1/10

    CPC分类号: H04L27/265 H04L25/0232

    摘要: A channel estimator (150) is provided that comprises: an extension circuit (410) configured to receive a pilot signal (510), and add front and back extension signals (620, 630) to a front and back of the pilot signal, respectively, creating a first signal (610), the front and back extension signals being extension of a first and last symbol, respectively, in the pilot signal; an IDFT circuit (420) configured to perform an IDFT function on the first signal, generating a second signal (710); a signal processing element (430, 440, 470, 480) configured to perform one or more operations on the second signal, generating a third signal (910); a DFT circuit (450) configured to perform a DFT function on the third signal, generating a fourth signal (1010); and a reduction circuit configured to cut off front and back ends of the fourth signal, generating a channel estimation signal (1110).

    摘要翻译: 提供了一种信道估计器(150),其包括:扩展电路(410),被配置为接收导频信号(510),并且分别向所述导频信号的前面和后面添加前后延伸信号(620,630) ,创建第一信号(610),所述前延伸信号和所述后扩展信号分别是所述导频信号中的第一和最后一个符号的扩展; IDFT电路(420),被配置为对所述第一信号执行IDFT功能,产生第二信号(710); 配置为对所述第二信号执行一个或多个操作的信号处理元件(430,440,470,480),产生第三信号(910); DFT电路(450),被配置为对所述第三信号执行DFT功能,生成第四信号(1010); 以及还原电路,被配置为切断第四信号的前端和后端,产生信道估计信号(1110)。

    Method for estimating channel statistics in an OFDM receiver
    16.
    发明授权
    Method for estimating channel statistics in an OFDM receiver 有权
    用于估计OFDM接收机中的信道统计的方法

    公开(公告)号:US08457222B2

    公开(公告)日:2013-06-04

    申请号:US12204975

    申请日:2008-09-05

    申请人: Ahsan U. Aziz Sili Lu

    发明人: Ahsan U. Aziz Sili Lu

    IPC分类号: H04L27/01

    摘要: A method of estimating channel statistics includes storing a plurality of pilot symbols from a plurality of received signals, establishing a reference for correlation; computing instantaneous correlations for each time lag of each of the plurality of pilot symbols relative to the reference, providing a table comprising non-isotropic scattering correlation values, computing current refined correlations using previous refined correlations and instantaneous correlations, comparing current refined correlations to the table of correlation values, and choosing correlation values from the table based on the step of comparing current refined correlations to the table.

    摘要翻译: 估计信道统计的方法包括从多个接收信号中存储多个导频符号,建立相关参考; 计算所述多个导频符号中的每一个相对于该参考的每个时滞的瞬时相关性,提供包括非各向同性散射相关值的表,使用先前精细相关和瞬时相关来计算当前精细化相关性,将当前精细相关与该表进行比较 的相关值,并且基于将当前精细相关性与表进行比较的步骤从表中选择相关值。