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    Spreader architecture for direct sequence spread spectrum communications
    1.
    发明授权
    Spreader architecture for direct sequence spread spectrum communications 有权
    用于直接序列扩频通信的扩展器架构

    公开(公告)号：US06366600B1

    公开(公告)日：2002-04-02

    申请号：US09211989

    申请日：1998-12-14

    申请人： Avneesh Agrawal ,  David Hansquine ,  Paul E. Bender

    发明人： Avneesh Agrawal ,  David Hansquine ,  Paul E. Bender

    IPC分类号： H04B169

    CPC分类号： H04L27/0008 ,  H04B1/707

    摘要： A spreader architecture for direct sequence spread spectrum communications is disclosed. This single architecture can perform OOK, BPSK, or QPSK spreading modulation of a carrier. In the QPSK and BPSK modes, input data is spread by pseudonoise signals to produce digital representations of phase-modulated baseband in-phase and quadrature components. In the OOK mode, the spectrum of the baseband components is selectively spread according to the input data. In an exemplary application, the various modulation modes are used to encode the control and traffic channels of a code-division multiple-access cellular telephone system.

    摘要翻译： 公开了一种用于直接序列扩频通信的扩展器架构。 该单一架构可以执行载波的OOK，BPSK或QPSK扩展调制。 在QPSK和BPSK模式中，输入数据通过伪噪声信号进行扩展，以产生相位调制的基带同相和正交分量的数字表示。 在OOK模式中，根据输入数据选择性地扩展基带分量的频谱。 在示例性应用中，各种调制模式用于对码分多址蜂窝电话系统的控制和业务信道进行编码。

    Resource allocator
    2.
    发明授权
    Resource allocator 有权
    资源分配器

    公开(公告)号：US06493354B1

    公开(公告)日：2002-12-10

    申请号：US09189710

    申请日：1998-11-11

    申请人： David Hansquine ,  Avneesh Agrawal

    发明人： David Hansquine ,  Avneesh Agrawal

    IPC分类号： H04J316

    CPC分类号： G06F9/50

    摘要： A resource allocator for allocating at least two different types of hardware resources for users within a communication system, wherein the system supports up to a first predetermined number of users of one particular type and a second predetermined number of users of a second particular type. The resource allocator provides a mapping of resources, either from fixed resources to shared resources or from shared resources to fixed resources, which is both cost effective and transparent to software.

    摘要翻译： 一种用于为通信系统内的用户分配至少两种不同类型的硬件资源的资源分配器，其中所述系统支持高达第一特定类型的第一预定数量的用户和第二特定类型的第二预定数量的用户。 资源分配器提供从固定资源到共享资源或从共享资源到固定资源的资源映射，这对软件来说既成本有效又透明。

    Coherent demodulator for use in the presence of phase discontinuities
    3.
    发明授权
    Coherent demodulator for use in the presence of phase discontinuities 有权
    用于存在相位不连续性的相干解调器

    公开(公告)号：US06594303B1

    公开(公告)日：2003-07-15

    申请号：US09228470

    申请日：1999-01-11

    申请人： Avneesh Agrawal ,  Paul E. Bender ,  Luca Blessent ,  Brian K. Butler ,  Quaeed Motiwala

    发明人： Avneesh Agrawal ,  Paul E. Bender ,  Luca Blessent ,  Brian K. Butler ,  Quaeed Motiwala

    IPC分类号： H04B169

    CPC分类号： H04B1/707 ,  H04B2201/70701

    摘要： Techniques for coherent demodulation in the presence of phase discontinuities is described. In the exemplary embodiment, times when phase discontinuities occur are known apriori by a receiver in which demodulation is being performed. In an alternate embodiment, the discontinuity location is signaled to the receiver in advance by the transmitter which generates the signals being demodulated. A pilot signal is prepared for optimal coherent demodulation by the use of two filters: one capable of withstanding the effects of phase discontinuity; a second providing superior filtering performance than the first so long as phase discontinuities are not present. Both filters are simultaneously operated. However, the superior performing filter is selected for use in demodulation whenever possible.

    摘要翻译： 描述了存在相位不连续性的相干解调技术。 在示例性实施例中，发生相位不连续性的时间是正在执行解调的接收机所知道的。 在替代实施例中，不连续位置由产生被解调的信号的发射机预先发送给接收机。 通过使用两个滤波器来准备导频信号以实现最佳相干解调：一个能够承受相位不连续性的影响; 只要不存在相位不连续性，第二个提供比第一个优越的滤波性能。 两个过滤器同时运行。 然而，优选执行滤波器被选择用于解调，只要可能。

    Carrier assignment for multi-carrier modulation in wireless communication
    5.
    发明授权
    Carrier assignment for multi-carrier modulation in wireless communication 有权

    公开(公告)号：US10064179B2

    公开(公告)日：2018-08-28

    申请号：US12622202

    申请日：2009-11-19

    申请人： Rajiv Vijayan ,  Avneesh Agrawal ,  Sanjay Jha

    发明人： Rajiv Vijayan ,  Avneesh Agrawal ,  Sanjay Jha

    IPC分类号： H04L27/26 ,  H04W72/04 ,  H04L5/00 ,  H04W52/34 ,  H04W52/36

    CPC分类号： H04W72/0453 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0066 ,  H04L27/2614 ,  H04W52/343 ,  H04W52/367

    摘要： Techniques for managing peak-to-average power ratio (PAPR) for multi-carrier modulation in wireless communication systems. Different terminals in a multiple-access system may have different required transmit powers. The number of carriers to allocate to each terminal is made dependent on its required transmit power. Terminals with higher required transmit powers may be allocated fewer carriers (associated with smaller PAPR) to allow the power amplifier to operate at higher power levels. Terminals with lower required transmit powers may be allocated more carriers (associated with higher PAPR) since the power amplifier is operated at lower power levels. The specific carriers to assign to the terminals may also be determined by their transmit power levels to reduce out-of-band emissions. Terminals with higher required transmit powers may be assigned with carriers near the middle of the operating band, and terminals with lower required transmit powers may be assigned with carriers near the band edges.

    Layered reuse for a wireless communication system
    8.
    发明授权
    Layered reuse for a wireless communication system 有权
    无线通信系统的分层重用

    公开(公告)号：US09585023B2

    公开(公告)日：2017-02-28

    申请号：US10858870

    申请日：2004-06-01

    申请人： Tingfang Ji ,  Avneesh Agrawal ,  Gavin Horn ,  Edward Harrison Teague

    发明人： Tingfang Ji ,  Avneesh Agrawal ,  Gavin Horn ,  Edward Harrison Teague

    IPC分类号： H04W16/02 ,  H04W16/12 ,  H04W72/04 ,  H04W72/08

    CPC分类号： H04W16/02 ,  H04W16/12 ,  H04W72/048 ,  H04W72/085

    摘要： To reduce inter-sector interference for “weak” users and combat a potentially large variation in interference levels observed by “strong” and weak users, system resources (e.g., frequency subbands) available for data transmission in a system are partitioned into multiple (e.g., three) disjoint sets. Each sector in the system is assigned one subband set. Neighboring sectors are assigned different subband sets such that the subband set assigned to each sector is orthogonal to the subband sets assigned to neighboring sectors. Each sector has an assigned subband set and an unassigned subband set, which contains all subbands not in the assigned set. Weak users in each sector (which are typically strong interferers to neighboring sectors) are allocated subbands in the assigned set. Strong users in each sector are allocated subbands in the unassigned set. The weak users in each sector are then orthogonal to strong interferers in neighboring sectors.

    摘要翻译： 为了减少“弱”用户的扇区间干扰，并且打击“强”和弱用户观察到的干扰水平的潜在巨大变化，可用于系统中的数据传输的系统资源（例如，频率子带）被划分为多个（例如， ，三）不相交的集合。 系统中的每个扇区被分配一个子带集。 分配相邻扇区的不同子带组，使得分配给每个扇区的子带集与分配给相邻扇区的子带集正交。 每个扇区具有分配的子带集和未分配的子带集合，其包含不在分配集合中的所有子带。 每个扇区（通常是相邻扇区的强干扰源）中的弱用户在分配集中被分配子带。 每个扇区中的强用户在未分配的集合中分配子带。 每个扇区中的弱用户然后与相邻扇区中的强干扰源正交。

    SYSTEMS AND METHODS TO DEFINE CONTROL CHANNELS USING RESERVED RESOURCE BLOCKS
    9.
    发明申请
    SYSTEMS AND METHODS TO DEFINE CONTROL CHANNELS USING RESERVED RESOURCE BLOCKS 有权

    公开(公告)号：US20150312895A1

    公开(公告)日：2015-10-29

    申请号：US14789332

    申请日：2015-07-01

    申请人： Aamod Khandekar ,  Juan Montojo ,  Avneesh Agrawal

    发明人： Aamod Khandekar ,  Juan Montojo ,  Avneesh Agrawal

    IPC分类号： H04W72/04

    CPC分类号： H04W72/0406 ,  H04L5/0073 ,  H04W16/14 ,  H04W72/042 ,  H04W72/044 ,  H04W88/06 ,  H04W88/10

    摘要： Systems and methodologies are described that facilitate defining new control channels in legacy wireless networks. Control data resources for new systems can be defined over resources reserved for general data communications in the legacy wireless network specification. In this regard, legacy devices can still be supported by devices implementing new control data resources, and the new control data resources can avoid substantial interference that is typically exhibited over legacy control and/or reference signal resources by instead using the general data resources. In addition, new system devices can avoid scheduling data communication resources over the new control resources to create a substantially non-interfered global control segment. Control data can be transmitted over the segment using beacon-based technologies, reuse schemes, and/or the like.

    Time varying delay diversity of OFDM
    10.
    发明授权
    Time varying delay diversity of OFDM 有权
    OFDM的时变延迟分集

    公开(公告)号：US09100076B2

    公开(公告)日：2015-08-04

    申请号：US13550549

    申请日：2012-07-16

    申请人： Ayman Fawzy Naguib ,  Avneesh Agrawal

    发明人： Ayman Fawzy Naguib ,  Avneesh Agrawal

    IPC分类号： H04L27/00 ,  H04B7/06 ,  H04B7/04 ,  H04L1/06 ,  H04L27/26 ,  H04L1/00 ,  H04L25/02 ,  H04W52/42

    CPC分类号： H04B7/0671 ,  H04B7/0417 ,  H04B7/0632 ,  H04B7/0673 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0071 ,  H04L1/0618 ,  H04L25/0224 ,  H04L27/2602 ,  H04L27/2607 ,  H04L27/2631 ,  H04L27/2647 ,  H04W52/42

    摘要： Methods and apparatuses that apply a time-varying delay to symbols to be transmitted from one or more antennas are provided. In a first embodiment, first and second transmission orders for samples in first and second data symbols, respectively, are determined. First and second cyclic prefixes are appended to the beginnings of the first and second transmission orders, respectively. The first and second data symbols are then provided to the same antenna for transmissions beginning at different time slots in accordance with a delay diversity scheme. In a second embodiment, either the first data symbol or the second data symbol can be provided to different antennas for transmissions beginning at different time slots in accordance with a delay diversity scheme.

    摘要翻译： 提供了对从一个或多个天线发送的符号应用时变延迟的方法和装置。 在第一实施例中，分别确定第一和第二数据符号中的采样的第一和第二传输顺序。 第一和第二循环前缀分别附加到第一和第二传输命令的开头。 然后根据延迟分集方案，将第一和第二数据符号提供给相同的天线，用于在不同时隙开始的传输。 在第二实施例中，根据延迟分集方案，可以将第一数据符号或第二数据符号提供给不同的天线以用于在不同时隙开始的传输。