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    Additional hierarchical preamble for support of FDMA channel in a multi-band OFDM system
    42.
    发明授权
    Additional hierarchical preamble for support of FDMA channel in a multi-band OFDM system 有权
    用于在多频带OFDM系统中支持FDMA信道的附加分层前导码

    公开(公告)号：US07532661B2

    公开(公告)日：2009-05-12

    申请号：US11054961

    申请日：2005-02-10

    申请人： Anuj Batra ,  Jaiganesh Balakrishnan

    发明人： Anuj Batra ,  Jaiganesh Balakrishnan

    IPC分类号： H04B1/00

    CPC分类号： H04L27/2613 ,  H04B1/709 ,  H04J13/107 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0032 ,  H04L5/0048 ,  H04L5/0062 ,  H04L5/0092 ,  H04L25/0226 ,  H04L25/03828

    摘要： A wireless device 10, 12 that distinguishes between multiple piconets is provided. The wireless device 10, 12 includes a preamble component operable to provide a preamble for a wireless fixed frequency interleaving transmission. The wireless device 10, 12 also includes a correlator component operable to distinguish a wireless transmission based on the preamble. The preamble is based on a 128-length sequence 120, 136, 144, formed using a 16-length sequence and a 8-length sequence. The 16-length sequence is selected from the group consisting of a first 16-length sequence 110, a second 16-length sequence 132, and a third 16-length sequence 140. The 8-length sequence is selected from the group consisting of a first 8-length sequence 112, a second 8-length sequence 134, and a third 8-length sequence 144.

    摘要翻译： 提供了区分多个微微网的无线设备10,12。 无线设备10,12包括可用于为无线固定频率交织传输提供前置码的前同步码组件。 无线设备10,12还包括可用于基于前导码区分无线传输的相关器组件。 前导码基于使用16长度序列和8长度序列形成的128长度序列120,136,144。 16长度序列选自由第一个16长度序列110，第二个16长度序列132和第三个16长度序列140组成的组.8个长度序列选自由 第一8长度序列112，第二8长度序列134和第三8长度序列144。

    Versatile system for optimizing data fragmentation in digital communications
    43.
    发明授权
    Versatile system for optimizing data fragmentation in digital communications 有权
    用于优化数字通信中数据碎片的通用系统

    公开(公告)号：US07492702B2

    公开(公告)日：2009-02-17

    申请号：US11191738

    申请日：2005-07-28

    申请人： Anuj Batra ,  Jin-Meng Ho ,  Srinivas Lingam ,  Jaiganesh Balakrishnan

    发明人： Anuj Batra ,  Jin-Meng Ho ,  Srinivas Lingam ,  Jaiganesh Balakrishnan

    IPC分类号： H04J11/00

    CPC分类号： H04L27/2608

    摘要： The present invention provides a versatile system for optimizing data fragmentation in a digital communications—particularly OFDM communications—system. A digital transmission system (100) is provided, having a PHY-level constraint. An array (104, 112) of data transmission parameters (106-110, 114-116), relating to the digital transmission system, is provided. A fragmentation construct (102) is provided, and adapted to determine a number of symbols required to transmit a given data transmission payload. The fragmentation construct calculates (118), based on the number symbols required, and on certain parameter information from the array, a number of bytes of data that must be transmitted in the given data transmission payload in order to minimize pad bits added to the data transmission payload.

    摘要翻译： 本发明提供了一种用于优化数字通信（特别是OFDM通信系统）中的数据分段的通用系统。 提供具有PHY级约束的数字传输系统（100）。 提供了与数字传输系统相关的数据传输参数（106-110,114-116）的阵列（104,112）。 提供分段结构（102），并且适于确定发送给定数据传输有效载荷所需的符号数量。 碎片结构基于所需的数字符号计算（118），并根据阵列的某些参数信息计算必须在给定数据传输有效载荷中传输的数据字节数，以便最小化添加到数据中的填充位 传输有效载荷。

    ELIMINATING NARROWBAND INTERFERENCE IN A RECEIVER
    45.
    发明申请
    ELIMINATING NARROWBAND INTERFERENCE IN A RECEIVER 有权
    消除接收机中的窄带干扰

    公开(公告)号：US20080043888A1

    公开(公告)日：2008-02-21

    申请号：US11828349

    申请日：2007-07-26

    申请人： Bijoy Bhukania ,  Raghu Ganesan ,  Naga Satya Srikanth Puvvada ,  Sthanunathan Ramakrishnan ,  Jaiganesh Balakrishnan

    发明人： Bijoy Bhukania ,  Raghu Ganesan ,  Naga Satya Srikanth Puvvada ,  Sthanunathan Ramakrishnan ,  Jaiganesh Balakrishnan

    IPC分类号： H04L1/00 ,  H04B1/10 ,  H04B1/707

    CPC分类号： H04L27/2647 ,  H04B1/71 ,  H04L25/03006

    摘要： A wireless device receives an input signal representing a signal of interest (e.g., one or more portions of a packet) on a wireless medium. The input signal may, in addition, contain narrowband interference signals. The wireless device removes the signal of interest from the input signal to produce a residue signal, and analyzes the residue signal to determine the presence of any interference bands in which narrowband interference signals may be present. The wireless device then removes the detected interference bands from the input signal. The residue signal may reveal the presence of interference signals, which might otherwise be hard to distinguish in the input signal. Thus, interference signals with power levels much lower than the power of the signal of interest may be detected and removed.

    摘要翻译： 无线设备在无线介质上接收表示感兴趣的信号（例如，分组的一个或多个部分）的输入信号。 此外，输入信号可以包含窄带干扰信号。 无线设备从输入信号中去除感兴趣的信号以产生残余信号，并且分析残差信号以确定可能存在窄带干扰信号的任何干扰频带的存在。 无线设备然后从输入信号中去除检测到的干扰带。 残留信号可能显示干扰信号的存在，否则在输入信号中可能难以区分。 因此，可以检测和去除具有远低于感兴趣信号的功率的功率水平的干扰信号。

    Dual-Carrier Modulation Decoder
    46.
    发明申请
    Dual-Carrier Modulation Decoder 审中-公开
    双载波调制解码器

    公开(公告)号：US20070091984A1

    公开(公告)日：2007-04-26

    申请号：US11551980

    申请日：2006-10-23

    申请人： Anuj Batra ,  Srinivas Lingam ,  Jaiganesh Balakrishnan

    发明人： Anuj Batra ,  Srinivas Lingam ,  Jaiganesh Balakrishnan

    IPC分类号： H04B1/00

    CPC分类号： H04L27/2608 ,  H04B1/7176 ,  H04L27/3405

    摘要： Communications systems are disclosed which comprise system and methods which, in some embodiments, include a data input; a decoding function, which is adapted to receive a first data element and a second data element from the data input and decode the first data element and second data element, and a mapping element, which is adapted to map the first data element and second data element onto two constellations.

    摘要翻译： 公开了包括在一些实施例中包括数据输入的系统和方法的通信系统; 解码功能，其适于从所述数据输入和解码所述第一数据元素和第二数据元素接收第一数据元素和第二数据元素，以及映射元件，其适于映射所述第一数据元素和所述第二数据 元素到两个星座。

    Methods and systems for performing an overlap-and-add operation
    47.
    发明申请
    Methods and systems for performing an overlap-and-add operation 有权
    用于执行重叠和添加操作的方法和系统

    公开(公告)号：US20060159189A1

    公开(公告)日：2006-07-20

    申请号：US11331463

    申请日：2006-01-13

    申请人： Jaiganesh Balakrishnan ,  Srinivas Lingam ,  Anuj Batra

    发明人： Jaiganesh Balakrishnan ,  Srinivas Lingam ,  Anuj Batra

    IPC分类号： H04K1/10

    CPC分类号： H04L27/265 ,  H04L25/0202 ,  H04L27/2605

    摘要： A system is provided that includes a first device 110A that transmits an information symbol with a zero-padded suffix (ZPS) and a second device 110B that receives the information symbol with the zero-padded suffix. The second device 110B performs a Fourier transform on at least one sample of the information symbol before a ZPS sample is overlapped-and-added to another sample of the information symbol.

    摘要翻译： 提供了一种系统，其包括以零填充后缀（ZPS）发送信息符号的第一设备110A和以零填充后缀接收信息符号的第二设备110B。 第二设备110B在将ZPS样本重叠并添加到信息符号的另一个样本之前对信息符号的至少一个采样执行傅里叶变换。

    Time-domain windowing of multi-band OFDM system to enable spectral sculpting
    48.
    发明申请
    Time-domain windowing of multi-band OFDM system to enable spectral sculpting 有权
    多频带OFDM系统的时域窗口启用光谱雕刻

    公开(公告)号：US20060008017A1

    公开(公告)日：2006-01-12

    申请号：US11174401

    申请日：2005-07-01

    申请人： Jaiganesh Balakrishnan ,  Anuj Batra ,  Hirohisa Yamaguchi

    发明人： Jaiganesh Balakrishnan ,  Anuj Batra ,  Hirohisa Yamaguchi

    IPC分类号： H04K1/10

    CPC分类号： H04L27/2613 ,  H04B1/719 ,  H04L25/03828 ,  H04L27/2626

    摘要： A method of wirelessly communicating is disclosed. The method comprises generating a plurality of tones for a wideband orthogonal frequency division multiplex symbol (310), the tones including a plurality of contiguous zero-valued tones, inverse Fourier transforming the tones to a plurality of time-domain samples (312), copying a plurality of the time-domain samples as a portion of a cyclic block (314), the cyclic block (314) contiguous with the time-domain samples (312), time-domain window filtering the time-domain samples (312) and the cyclic block (314) to form a portion of the wideband orthogonal frequency division multiplex symbol (310), wherein the time-domain window filter (350) is a function φ(k) having the property that φ(k)+φ(k+Nfft) is about equal to a constant θ where Nfft is the number of tones, and transmitting the wideband orthogonal frequency division multiplex symbol (310).

    摘要翻译： 公开了一种无线通信的方法。 该方法包括：生成用于宽带正交频分复用符号（310）的多个音调，该音调包括多个连续的零值音调，将音调逆傅里叶变换为多个时域采样（312），复制 作为循环块（314）的一部分的多个时域采样，与时域采样（312）连续的循环块（314），时域采样（312）的时域窗口滤波和 所述循环块（314）形成所述宽带正交频分多路复用符号（310）的一部分，其中所述时域窗口滤波器（350）是具有所述phi（k）+ phi（k） k + N ft ft ft ft is is is is about about about about about about about about about where where and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and and。

    Ultra wideband interference cancellation for orthogonal frequency division multiplex transmitters by protection-edge tones
    49.
    发明申请
    Ultra wideband interference cancellation for orthogonal frequency division multiplex transmitters by protection-edge tones 有权
    通过保护边缘色调对正交频分复用发射机进行超宽带干扰消除

    公开(公告)号：US20060008016A1

    公开(公告)日：2006-01-12

    申请号：US11173840

    申请日：2005-07-01

    申请人： Jaiganesh Balakrishnan ,  Hirohisa Yamaguchi

    发明人： Jaiganesh Balakrishnan ,  Hirohisa Yamaguchi

    IPC分类号： H04J11/00

    CPC分类号： H04L27/2613 ,  H04B1/719 ,  H04L25/03828 ,  H04L27/2626

    摘要： A method of wirelessly communicating is disclosed. The method comprises determining a matrix W based in part on limiting a plurality of active interference cancellation tone values (416), determining the active interference cancellation tone values (416) based on W and based on a plurality of information data values (410), and transmitting an orthogonal frequency division multiplex signal (310) based on the plurality of active interference cancellation tone values (416) and the information data values (410).

    摘要翻译： 公开了一种无线通信的方法。 该方法包括：基于限制多个主动干扰消除音调值（416），基于W并基于多个信息数据值（410）确定主动干扰消除音调值（416）来确定矩阵W， 以及基于所述多个有源干扰消除音调值（416）和所述信息数据值（410）发送正交频分复用信号（310）。