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    • 5. 发明申请
    • METHOD AND APPARATUS FOR SUPPORTING HALF-DUPLEX TERMINALS IN AN ASYNCHRONOUS MODE
    • 用于支持异步模式中的双工半双工终端的方法和装置
    • WO2008042541A1
    • 2008-04-10
    • PCT/US2007/077505
    • 2007-09-04
    • QUALCOMM INCORPORATEDPALANKI, RaviKHANDEKAR, AamodGOROKHOV, Alexei
    • PALANKI, RaviKHANDEKAR, AamodGOROKHOV, Alexei
    • H04B7/26
    • H04B7/2656
    • Systems and methodologies are described that provide support for signal acquisition in wireless communication systems that utilize half-duplex communication in the presence of asynchronous sectors. Forward link and reverse link superframes can be structured such that a given frame position in a superframe alternates between forward link communication and reverse link communication for a particular half-duplex interlace. More particularly, an odd number of frames can be grouped into respective forward link and reverse link superframes, from which frames can be assigned to a first half-duplex interlace and a second half-duplex interlace in an alternating fashion. By varying the communication link used by a half-duplex interlace at a given frame location, terminals operating on a single half-duplex interlace can detect asynchronously operating sectors irrespective of the transmission timeline of such sectors.
    • 描述了在存在异步扇区的情况下利用半双工通信的无线通信系统中的信号获取的支持的系统和方法。 可以构造前向链路和反向链路超帧,使得超帧中的给定帧位置在特定半双工交错的前向链路通信和反向链路通信之间交替。 更具体地,奇数帧可以被分组成相应的前向链路和反向链路超帧,从该帧可以以交替的方式将帧分配给第一半双工交错和第二半双工交错。 通过改变在给定帧位置处的半双工交错使用的通信链路,在单个半双工交错上操作的终端可以检测异步操作扇区,而与这些扇区的传输时间线无关。
    • 10. 发明申请
    • PILOT AND DATA TRANSMISSION IN A MIMO SYSTEM APPLYING SUBBAND MULTIPLEXING
    • 应用子带复用的MIMO系统中的引导和数据传输
    • WO2006138206A1
    • 2006-12-28
    • PCT/US2006/022728
    • 2006-06-09
    • QUALCOMM INCORPORATEDPALANKI, RaviKHANDEKAR, AamodSUTIVONG, Arak
    • PALANKI, RaviKHANDEKAR, AamodSUTIVONG, Arak
    • H04L27/26H04L5/02H04B7/08H04B7/06H04L1/06
    • H04B7/04H04L1/1819H04L5/0023H04L5/0048H04L25/0206H04L25/022H04L25/0226H04L25/0228H04L25/0256
    • In a single-carrier frequency division multiple access (SC-FDMA) system that utilizes interleaved FDMA (IFDMA) or localized FDMA, multiple transmitters may transmit their pilots using time division multiplexing (TDM), code division multiplexing (CDM), interleaved frequency division multiplexing (IFDM), or localized frequency division multiplexing (LFDM). The pilots from these transmitters are then orthogonal to one another. A receiver performs the complementary demultiplexing for the pilots sent by the transmitters. The receiver may derive a channel estimate for each transmitter using an MMSE technique or a least-squares technique. The receiver may receive overlapping data transmissions sent on the same time-frequency block by the multiple transmitters and may perform receiver spatial processing with spatial filter matrices to separate these data transmissions. The receiver may derive the spatial filter matrices based on the channel estimates for the transmitters and using zero-forcing, MMSE, or maximal ratio combining technique.
    • 在采用交织FDMA(IFDMA)或集中式FDMA的单载波频分多址(SC-FDMA)系统中,多个发射机可以使用时分多路复用(TDM),码分复用(CDM),交错分频 复用(IFDM)或局部频分复用(LFDM)。 来自这些发射机的飞行员然后彼此正交。 接收机对由发射机发送的导频进行互补解复用。 接收机可以使用MMSE技术或最小二乘法来为每个发射机导出信道估计。 接收机可以接收由多个发射机在相同时间频率块上发送的重叠数据传输,并且可以利用空间滤波器矩阵来执行接收机空间处理以分离这些数据传输。 接收机可以基于发射机的信道估计和使用零强制,MMSE或最大比组合技术导出空间滤波器矩阵。