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    POWER CONTROL FOR A CHANNEL WITH MULTIPLE FORMATS IN A COMMUNICATION SYSTEM
    81.
    发明公开
    POWER CONTROL FOR A CHANNEL WITH MULTIPLE FORMATS IN A COMMUNICATION SYSTEM 有权
    功率控制多种格式在通信系统的信道

    公开(公告)号：EP1419590A2

    公开(公告)日：2004-05-19

    申请号：EP02759410.0

    申请日：2002-08-20

    Applicant: QUALCOMM Incorporated

    Inventor： SHIU, Da-shan ,  WILLENEGGER, Serge ,  CHI, Richard ,  SUBRAHMANYA, Parvathanathan ,  HSU, Chih-Ping

    IPC: H04B7/005

    CPC classification number: H04W52/12 ,  H04W52/20 ,  H04W52/267 ,  H04W52/283 ,  H04W52/286 ,  H04W52/44

    Abstract: Techniques to more efficiently control the transmit power for a data transmission that uses a number of formats (e.g., rates, transport formats). Different formats for a given data channel (e.g., transport channel) may require different target SNIRs to achieved a particular BLER. In one aspect, individual target BLER may be specified for each format of each data channel. In another aspect, various power control schemes are provided to achieve different target SNIRs for different formats. In a first power control scheme, multiple individual outer loops are maintained for multiple formats. For each format, its associated outer loop attempts to set the target SNIR such that the target BLER specified for that format is achieved. In a second power control scheme, multiple individual outer loops are maintained and the base station further applies different adjustments to the transmit power levels for different formats.

    EQUALIZER FOR A RECEIVER IN A WIRELESS COMMUNICATION SYSTEM
    85.
    发明公开
    EQUALIZER FOR A RECEIVER IN A WIRELESS COMMUNICATION SYSTEM 有权
    均衡器的接收器无线通信系统

    公开(公告)号：EP1949628A2

    公开(公告)日：2008-07-30

    申请号：EP06839904.7

    申请日：2006-11-15

    Applicant: QUALCOMM Incorporated

    Inventor： MERGEN, Gokhan ,  SUBRAHMANYA, Parvathanathan ,  KASTURI, Nitin ,  SUNDARESAN, Rajesh

    IPC: H04L25/03

    CPC classification number: H04B7/0634 ,  H04B7/0848 ,  H04L7/0058 ,  H04L25/03044

    Abstract: Techniques for performing equalization at a receiver are described. In an aspect, equalization is performed by sub-sampling an over-sampled input signal to obtain multiple sub-sampled signals. An over-sampled channel impulse response estimate is derived and sub-sampled to obtain multiple sub-sampled channel impulse response estimates. At least one set of equalizer coefficients is derived based on at least one sub-sampled channel impulse response estimate. At least one sub-sampled signal is filtered with the at least one set of equalizer coefficients to obtain at least one output signal. One sub-sampled signal (e.g., with largest energy) may be selected and equalized based on a set of equalizer coefficients derived from an associated sub-sampled channel impulse response estimate. Alternatively, the multiple sub-sampled signals may be equalized based on multiple sets of equalizer coefficients, which may be derived separately or jointly. The equalizer coefficients may be derived in the time domain or frequency domain.

    RAKE RECEIVER FINGER ASSIGNMENT BASED ON SIGNAL PATH CONCENTRATION
    86.
    发明公开
    RAKE RECEIVER FINGER ASSIGNMENT BASED ON SIGNAL PATH CONCENTRATION 审中-公开
    RAKE-EMPFÄNGERFINGER-ZUWEISUNG AUF DER BASIS DER SIGNALWEGKONZENTRATION

    公开(公告)号：EP1943742A1

    公开(公告)日：2008-07-16

    申请号：EP06839642.3

    申请日：2006-10-31

    Applicant: QUALCOMM Incorporated

    Inventor： SHESHADRI, Thejaswi, Bharadwaj, Madapushi ,  DONG, Brian ,  AMERGA, Messay ,  HSU, Chih-Ping ,  SUBRAHMANYA, Parvathanathan ,  ZHU, Xiaoming

    IPC: H04B1/707

    CPC classification number: H04B1/7117 ,  B60L2200/26

    Abstract: A rake receiver finger assignor is configured to assign a rake receiver finger to a time offset between identified signal path time offsets in accordance with a concentration of identified signal paths from a transmitter to a rake receiver. In accordance with the exemplary embodiment, a number of identified signal paths having time offsets within a time window are observed to determine the concentration of signal paths identified by a path searcher. If the number of identified signal paths indicates a concentrated distribution of signal paths such as during a fat path condition, at least one rake finger is assigned between at a time offset between two identified signal paths.

    Abstract translation: 耙式接收器手指分配器被配置为根据从发射机到耙式接收机的识别的信号路径的浓度，将耙式接收机手指分配到所识别的信号路径时间偏移之间的时间偏移。 根据示例性实施例，观察到在时间窗内具有时间偏移的多个识别的信号路径，以确定由路径搜索器识别的信号路径的集中。 如果识别的信号路径的数量表示信号路径的集中分布，例如在胖路径条件期间，则在两个识别的信号路径之间的时间偏移处分配至少一个耙指。

    QUICK DETECTION OF SIGNALING IN A WIRELESS COMMUNICATION SYSTEM
    87.
    发明公开
    QUICK DETECTION OF SIGNALING IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
    EINEM DRAHTLOSEN KOMMUNIKATIONSSYSTEM中的SCHNELLE DETEKICK DER SIGNALISIERUNG

    公开(公告)号：EP1932310A2

    公开(公告)日：2008-06-18

    申请号：EP06814948.3

    申请日：2006-09-15

    Applicant: Qualcomm Incorporated

    Inventor： SUBRAHMANYA, Parvathanathan ,  SHESHADRI, Thejaswi, Bharadwaj, Madapushi ,  CHAWLA, Vivek

    IPC: H04L27/227

    CPC classification number: H04L27/2278 ,  H04B1/7085 ,  H04B2201/70709 ,  H04L2027/003 ,  H04L2027/0034 ,  H04L2027/0065 ,  H04W52/0229 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/166 ,  Y02D70/24 ,  Y02D70/40

    Abstract: Quick frequency tracking (QFT), quick time tracking (QTT), and non-causal pilot filtering (NCP) are used to detect sporadically transmitted signaling, e.g., paging indicators. For QFT, multiple hypothesized frequency errors are applied to an input signal to obtain multiple rotated signals. The energies of the rotated signals are computed. The hypothesized frequency error with the largest energy is provided as a frequency error estimate. For QTT, coherent accumulation is performed on the input signal for a first set of time offsets, e.g., early, on-time, and late. Interpolation, energy computation, and non-coherent accumulation are then performed to obtain a timing error estimate with higher time resolution. For NCP, pilot symbols are filtered with a non-causal filter to obtain pilot estimates for one antenna for non-STTD and for two antennas for STTD. The frequency and timing error estimates and the pilot estimates are used to detect the signaling.

    Abstract translation: 使用快速频率跟踪（QFT），快速时间跟踪（QTT）和非因果导频滤波（NCP）来检测偶发地发送的信令，例如寻呼指示符。 对于QFT，将多个假设的频率误差应用于输入信号以获得多个旋转信号。 计算旋转信号的能量。 提供具有最大能量的假设频率误差作为频率误差估计。 对于QTT，对于第一组时间偏移的输入信号执行相干累加，例如，早期，准时和晚期。 然后执行插值，能量计算和非相干累加，以获得具有较高时间分辨率的定时误差估计。 对于NCP，使用非因果滤波器对导频符号进行滤波，以获得非STTD的一个天线和STTD的两个天线的导频估计。 频率和定时误差估计和导频估计用于检测信令。

    FRACTIONALLY-SPACED EQUALIZERS FOR SPREAD SPECTRUM WIRELESS COMMUNICATION
    88.
    发明公开
    FRACTIONALLY-SPACED EQUALIZERS FOR SPREAD SPECTRUM WIRELESS COMMUNICATION 审中-公开
    ANTEILMÄSSIGBEABSTANDETE AUSGLEICHERFÜRDRAHTLOSE SPREIZSPEKTRUMKOMMUNIKATION

    公开(公告)号：EP1925096A1

    公开(公告)日：2008-05-28

    申请号：EP06803719.1

    申请日：2006-09-15

    Applicant: Qualcomm Incorporated

    Inventor： SUBRAHMANYA, Parvathanathan ,  KANG, Inyup ,  FEI, Jia ,  SUNDARESAN, Rajesh

    IPC: H04B1/707 ,  H04B7/08 ,  H04L25/03

    CPC classification number: H04B1/71057 ,  H04B7/0669 ,  H04B7/0673 ,  H04B7/0845 ,  H04L25/03044 ,  H04L25/03292 ,  H04L2025/03509

    Abstract: This disclosure describes equalization techniques for spread spectrum wireless communication. The techniques may involve estimating a channel impulse response, estimating channel variance, and selecting filter coefficients for an equalizer based on the estimated channel impulse response and the estimated channel variance. Moreover, in accordance with this disclosure, the channel variance estimation involves estimation of two or more co-variances for different received samples. Importantly, the equalizer is “fractionally spaced,” which means that the equalizer defines fractional filtering coefficients (filter taps), unlike conventional equalizers that presume that filter coefficients are defined at integer chip spacing. The techniques can allow the equalizer to account for antenna diversity, such as receive diversity, transmit diversity, or possibly both.

    Abstract translation: 本公开描述了用于扩频无线通信的均衡技术。 这些技术可以包括基于估计的信道脉冲响应和估计的信道方差来估计信道脉冲响应，估计信道方差，以及为均衡器选择滤波器系数。 此外，根据本公开，信道方差估计涉及对于不同接收样本的两个或多个协方差的估计。 重要的是，均衡器是“分数间隔”的，这意味着均衡器定义了分数滤波系数（滤波器抽头），不同于传统的均衡器，假设滤波器系数是以整数芯片间隔定义的。 这些技术可以允许均衡器考虑天线分集，例如接收分集，发射分集，或者可能两者。

    ERASURE DETECTION FOR A TRANSPORT CHANNEL WITH AN UNKNOWN FORMAT
    89.
    发明公开
    ERASURE DETECTION FOR A TRANSPORT CHANNEL WITH AN UNKNOWN FORMAT 审中-公开
    火灾探测与未知格式的传输信道

    公开(公告)号：EP1844569A2

    公开(公告)日：2007-10-17

    申请号：EP06734437.4

    申请日：2006-01-31

    Applicant: QUALCOMM INCORPORATED

    Inventor： VISVANATHAN, Arun ,  BUTALA, Amit ,  SUBRAHMANYA, Parvathanathan

    IPC: H04L1/00 ,  H04B7/005

    CPC classification number: H04W52/12 ,  H04B1/7172 ,  H04L1/20 ,  H04L1/201 ,  H04L1/208 ,  H04W52/18 ,  H04W52/20 ,  H04W52/24 ,  H04W52/44

    Abstract: To perform erasure detection for an intermittently active transport channel with unknown format, a receiver determines an energy metric and a symbol error rate (SER) for a received block with CRC failure. The receiver computes uncorrelated random variables u and v for the received block based on the energy metric and SER, the estimated means and standard deviations of the energy metric and SER, and a correlation coefficient indicative of the correlation between the energy metric and SER. The receiver then evaluates the uncorrelated random variables u and v based on at least one decision criterion and declares the received block to be an erased block or a DTX block based on the result of the evaluation. The decision criterion may be defined based on a target probability of false alarm and adjusted based on another metric, such as a zero state bit, for the received block.

    APPARATUS, SYSTEM, AND METHOD FOR MANAGING TRANSMISSION POWER IN A WIRELESS COMMUNICATION SYSTEM
    90.
    发明公开
    APPARATUS, SYSTEM, AND METHOD FOR MANAGING TRANSMISSION POWER IN A WIRELESS COMMUNICATION SYSTEM 有权
    设备，系统和方法管理传输功率的无线通信系统

    公开(公告)号：EP1792417A1

    公开(公告)日：2007-06-06

    申请号：EP05795939.7

    申请日：2005-09-08

    Applicant: QUALCOMM INCORPORATED

    Inventor： ODIGIE, Erumusele Olumuyiwa ,  KASTURI, Nitin ,  SUBRAHMANYA, Parvathanathan

    IPC: H04B7/005

    CPC classification number: H04W52/221 ,  H04W52/223 ,  H04W52/267 ,  H04W52/346 ,  H04W52/367 ,  Y02D70/124

    Abstract: An apparatus, system, and method efficiently manage transmission power in a user equipment (UE) device by maintaining and applying an authorized power level to determine a transmission power level after a power limited transmission and before a new power control command has been received. The UE device maintains the authorized power level by monitoring and adjusting the authorized power level based on received power control commands. After a power limited transmission where the maximum power level is less than the authorized power level, the UE device determines the transmission power level for the next transmission based on the authorized power level. Accordingly, after the power limiting situation has ceased, the UE device transmits at the optimum power level eliminating the inefficiencies of transmitting at a lower than authorized power before the next power control command is received.

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