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    Programmable task-based co-processor
    1.
    发明授权
    Programmable task-based co-processor 有权
    可编程任务协同处理器

    公开(公告)号：US07386326B2

    公开(公告)日：2008-06-10

    申请号：US10235462

    申请日：2002-09-04

    申请人： Vijay Sundararajan ,  Sriram Sundararajan ,  Alan Gatherer

    发明人： Vijay Sundararajan ,  Sriram Sundararajan ,  Alan Gatherer

    IPC分类号： H04M1/00

    CPC分类号： G06F9/24

    摘要： A programmable co-processor system comprising a datapath, a microprogram, and a microcontroller is provided. The datapath includes one or more datapath elements operable to receive input signals. The microprogram memory includes a microprogram operable to control the datapath in order to process the input signals. The microcontroller is operable to modify the microprogram based on a modification command.

    摘要翻译： 提供了包括数据路径，微程序和微控制器的可编程协处理器系统。 数据路径包括可操作以接收输入信号的一个或多个数据路径元件。 微程序存储器包括可操作以控制数据路径以便处理输入信号的微程序。 微控制器可操作以基于修改命令修改微程序。

    Collision avoidance manager, method of avoiding a memory collision and a turbo decoder employing the same
    3.
    发明申请
    Collision avoidance manager, method of avoiding a memory collision and a turbo decoder employing the same 审中-公开
    冲突避免管理器，避免存储器冲突的方法和采用该冲突的turbo解码器

    公开(公告)号：US20060083174A1

    公开(公告)日：2006-04-20

    申请号：US11239498

    申请日：2005-09-29

    申请人： Byonghyo Shim ,  Yanni Chen ,  Manish Goel ,  Tod Wolf ,  Sriram Sundararajan ,  Alan Gatherer

    发明人： Byonghyo Shim ,  Yanni Chen ,  Manish Goel ,  Tod Wolf ,  Sriram Sundararajan ,  Alan Gatherer

    IPC分类号： H04L12/26

    CPC分类号： G11C7/1075 ,  G06F13/1647 ,  G11C7/22

    摘要： The present invention provides a collision avoidance manager for use with single-port memories. In one embodiment, the collision avoidance manager includes a memory structuring unit configured to provide a memory arrangement of the single-port memories having upper and lower memory banks arranged into half-memory portions. Additionally, the collision avoidance manager also includes a write memory alignment unit coupled to the memory structuring unit and configured to provide double-data writing to the memory arrangement based on memory collision avoidance. In a preferred embodiment, the collision avoidance manager also includes a read memory alignment unit coupled to the memory structuring unit and configured to provide double-data reading from the memory arrangement while maintaining the memory collision avoidance.

    摘要翻译： 本发明提供了一种与单端口存储器一起使用的防碰撞管理器。 在一个实施例中，冲突避免管理器包括存储器结构单元，其被配置为提供具有布置成半存储器部分的上部和下部存储器组的单个端口存储器的存储器布置。 此外，防撞管理器还包括耦合到存储器构造单元并被配置为基于存储器冲突避免向存储器装置提供双数据写入的写存储器对准单元。 在优选实施例中，防碰撞管理器还包括耦合到存储器结构单元并被配置为在保持存储器冲突避免的同时从存储器装置提供双数据读取的读取存储器对准单元。

    Channel tracking in an orthogonal frequency-division multiplexing system
    6.
    发明授权
    Channel tracking in an orthogonal frequency-division multiplexing system 有权
    正交频分复用系统中的信道跟踪

    公开(公告)号：US08675744B1

    公开(公告)日：2014-03-18

    申请号：US12237350

    申请日：2008-09-24

    申请人： Athos Kasapi ,  Sriram Sundararajan

    发明人： Athos Kasapi ,  Sriram Sundararajan

    IPC分类号： H04K1/10

    CPC分类号： H04L27/066 ,  H04K1/10 ,  H04L27/2657 ,  H04L27/2666 ,  H04L27/2675 ,  H04L27/2676

    摘要： A receiver determines phase and frequency information from data signals that carry information from a transmitter to a receiver, instead of or in addition to, information from control signals. In a specific embodiment, the information is obtained from data signals modulated as a binary phase-shift keying (“BPSK”) waveform by demodulation. Other phase-shift keyings might be used instead. Encoded information might be recovered in received OFDM packets by receiving OFDM subcarriers modulated with the two low data rates supported by IEEE 802.11 standard(s) wherein the subcarriers encoding the packet are modulated using binary phase shift keying and the encoding information is at a zero phase or a π (pi) phase offset on each of the subcarriers. Determining the carrier frequency might be done by calculating the square of each of subcarrier signal and/or determining the phase offset of the subcarriers even with information modulated onto the subcarriers.

    摘要翻译： 接收机从来自控制信号的信息中确定来自数据信号的相位和频率信息，该数据信号将信息从发送器传送到接收器，而不是附加信息。 在具体实施例中，从通过解调作为二进制相移键控（“BPSK”）波形调制的数据信号获得信息。 可以使用其他相移键控。 编码的信息可以通过接收用IEEE 802.11标准支持的两个低数据速率调制的OFDM子载波来在接收的OFDM分组中恢复，其中使用二进制相移键控对编码分组的子载波进行调制，并且编码信息处于零相位 或每个子载波上的pi（pi）相位偏移。 确定载波频率可以通过计算每个副载波信号的平方和/或即使在被调制到子载波上的信息也可以确定子载波的相位偏移来完成。