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    POSITION LOCATION USING PHASE-ADJUSTED TRANSMITTERS
    2.
    发明申请
    POSITION LOCATION USING PHASE-ADJUSTED TRANSMITTERS 审中-公开

    公开(公告)号：US20160270022A1

    公开(公告)日：2016-09-15

    申请号：US15162018

    申请日：2016-05-23

    申请人： QUALCOMM Incorporated

    发明人： Fuyun Ling ,  Gordon Kent Walker ,  Krishna Kiran Mukkavilli

    IPC分类号： H04W64/00 ,  G01S1/02 ,  G01S5/02 ,  G01S5/14

    CPC分类号： G01S5/021 ,  G01S1/024 ,  G01S5/0226 ,  G01S5/14 ,  H04W64/00

    摘要： Systems and methods are provided for determining position location information in a wireless network. In one embodiment, timing offset information is communicated between multiple transmitters and one or more receivers. Such information enables accurate position or location determinations to be made that account for timing differences throughout the network. In another embodiment, transmitter phase adjustments are made that advance or delay transmissions from the transmitters to account for potential timing differences at receivers. In yet another embodiment, combinations of timing offset communications and/or transmitter phase adjustments can be employed in the wireless network to facilitate position location determinations.

    Coding scheme for a wireless communication system
    3.
    发明申请
    Coding scheme for a wireless communication system 有权
    无线通信系统的编码方案

    公开(公告)号：US20160043784A1

    公开(公告)日：2016-02-11

    申请号：US14885787

    申请日：2015-10-16

    申请人： QUALCOMM Incorporated

    发明人： Fuyun Ling ,  J. Rodney Walton ,  Mark Wallace ,  Ivan Fernandez ,  Naga Bhushan

    IPC分类号： H04B7/04

    CPC分类号： H04B7/0417 ,  H04B7/0632 ,  H04L1/0009 ,  H04L1/0041 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0066 ,  H04L1/0068 ,  H04L1/0071 ,  H04L5/0023 ,  H04L5/0046 ,  H04L5/0048 ,  H04L5/006 ,  H04L25/03171 ,  H04L27/3488

    摘要： Coding techniques for a (e.g., OFDM) communication system capable of transmitting data on a number of “transmission channels” at different information bit rates based on the channels' achieved SNR. A base code is used in combination with common or variable puncturing to achieve different coding rates required by the transmission channels. The data (i.e., information bits) for a data transmission is encoded with the base code, and the coded bits for each channel (or group of channels with the similar transmission capabilities) are punctured to achieve the required coding rate. The coded bits may be interleaved (e.g., to combat fading and remove correlation between coded bits in each modulation symbol) prior to puncturing. The unpunctured coded bits are grouped into non-binary symbols and mapped to modulation symbols (e.g., using Gray mapping). The modulation symbol may be “pre-conditioned” and prior to transmission.

    摘要翻译： 能够基于信道实现的SNR以不同的信息比特率在多个“传输信道”上发送数据的（例如，OFDM）通信系统的编码技术。 基本码与公共或可变的打孔组合使用以实现传输信道所需的不同的编码速率。 针对数据传输的数据（即，信息比特）用基本码进行编码，并且针对每个信道（或具有相似传输能力的信道组）的编码比特被打孔以实现所需的编码率。 在穿孔之前，编码比特可以被交织（例如，以抵消衰落并消除每个调制符号中的编码比特之间的相关性）。 未经穿孔的编码比特被分组成非二进制符号并映射到调制符号（例如，使用灰色映射）。 调制符号可以是“预调节”并且在传输之前。

    INITIALIZATION OF TIMING RECOVERY AND DECISION-FEEDBACK EQUALIZATION IN A RECEIVER
    4.
    发明申请
    INITIALIZATION OF TIMING RECOVERY AND DECISION-FEEDBACK EQUALIZATION IN A RECEIVER 审中-公开
    定时恢复的初始化和接收方的决策反馈均衡

    公开(公告)号：US20150326382A1

    公开(公告)日：2015-11-12

    申请号：US14763798

    申请日：2013-01-28

    申请人： Jian LI ,  Yisheng XUE ,  Michael M. FAN ,  Jilei HOU ,  Yin Huang ,  Fuyun Ling ,  QUALCOMM INCORPORATED

    发明人： Jian Li ,  Yin Huang ,  Yisheng Xue ,  Michael M. Fan ,  Fuyun Ling ,  Jilei Hou

    IPC分类号： H04L7/00 ,  H04L25/03

    CPC分类号： H04L7/0004 ,  H04L25/03 ,  H04L25/0305 ,  H04L25/0307 ,  H04L2025/03656

    摘要： A method of initializing a receiver is performed during an initialization mode. Timing offset values for a timing recovery circuit are repeatedly selected. For each selected timing offset value, timing recovery is performed using the timing offset value and groups of weights for a decision feedback equalizer are repeatedly selected. Each selected group of weights is used to perform blind decision feedback equalization. For each selected group of weights, a metric indicating data reception quality is computed. A timing offset value and a group of weights are chosen based on the computed metrics.

    摘要翻译： 在初始化模式期间执行初始化接收机的方法。 定时恢复电路的定时偏移值被重复选择。 对于每个选择的定时偏移值，使用定时偏移值执行定时恢复，并且重复地选择用于判决反馈均衡器的权重组。 每个选择的权重组用于执行盲判决反馈均衡。 对于每个选择的权重组，计算指示数据接收质量的度量。 基于所计算的度量来选择定时偏移值和权重组。

    METHOD AND APPARATUS OF 128-DSQ DE-MAPPING IN 10GBASE-T SYSTEM
    8.
    发明申请
    METHOD AND APPARATUS OF 128-DSQ DE-MAPPING IN 10GBASE-T SYSTEM 审中-公开
    在10GBASE-T系统中128-DSQ去映射的方法和装置

    公开(公告)号：US20160182273A1

    公开(公告)日：2016-06-23

    申请号：US14910569

    申请日：2013-09-10

    申请人： QUALCOMM INCORPORATED

    发明人： Jian Li ,  Fuyun Ling ,  Changlong Xu ,  Yin Huang ,  Yisheng Xue ,  Jilei Hou

    IPC分类号： H04L27/38 ,  H04L1/00

    CPC分类号： H04L27/38 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0058 ,  H04L5/12 ,  H04L25/03178 ,  H04L25/067

    摘要： A method and apparatus for demapping a double squared quadrature amplitude modulated (DSQ) symbol is disclosed. One or more first log likelihood ratios (LLRs) are determined, for a first subset of constellation points of a corresponding DSQ constellation, using an LLR approximation. One or more second LLRs are determined, for a second subset of constellation points of the DSQ constellation, using a lookup table. The DSQ symbol is then demapped to one of a plurality of constellation points of the DSQ constellation based on the first and second LLRs. For some embodiments, the first subset of constellation points may correspond with an inner region of the DSQ constellation and the second subset of constellation points may correspond with an outer region of the DSQ constellation.

    摘要翻译： 公开了一种用于解映射双正交幅度调制（DSQ）符号的方法和装置。 对于对应DSQ星座的星座点的第一子集，使用LLR近似来确定一个或多个第一对数似然比（LLR）。 对于DSQ星座的星座点的第二子集，使用查找表来确定一个或多个第二LLR。 然后，基于第一和第二LLR，DSQ符号被映射到DSQ星座的多个星座点中的一个。 对于一些实施例，星座点的第一子集可以对应于DSQ星座的内部区域，并且星座点的第二子集可以对应于DSQ星座图的外部区域。