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    WIRELESS COMMUNICATION METHOD AND APPARATUS FOR PERFORMING POST-DETECTION CONSTELLATION CORRECTION
    31.
    发明申请
    WIRELESS COMMUNICATION METHOD AND APPARATUS FOR PERFORMING POST-DETECTION CONSTELLATION CORRECTION 审中-公开
    无线通信方法和设备，用于执行后检测信号校正

    公开(公告)号：WO2005048468A3

    公开(公告)日：2006-08-17

    申请号：PCT/US2004036939

    申请日：2004-11-05

    Applicant: INTERDIGITAL TECH CORP ,  PIETRASKI PHILIP J

    Inventor： PIETRASKI PHILIP J

    IPC: H03K9/00 ,  H03D1/00 ,  H04B20060101 ,  H04L5/12 ,  H04L27/08 ,  H04L27/38

    CPC classification number: H04L27/3863 ,  H04L27/3809 ,  H04L27/3872

    Abstract: A method and apparatus for correcting the phase and gain of data associated with a constellation pattern of a plurality of received individual symbols. Each symbol is divided into real and imaginary symbol components. The signs of the real and imaginary symbol components of each symbol are determined and used as a basis for determining whether the symbol is associated with a first or third quadrant of the constellation pattern or a second or fourth quadrant of the constellation pattern. The absolute values of the real and imaginary symbol components are determined and used to create a first sum and a second sum. A phase adjustment value ? and a gain adjustment value G are derived from the first and second sums, and are used to create a complex number. Each of the received individual symbols is multiplied by the created complex number to provide corrected constellation pattern data.

    Abstract translation: 一种用于校正与多个接收的单独符号的星座图案相关联的数据的相位和增益的方法和装置。 每个符号分为实数和虚数符号分量。 确定每个符号的实数和虚符号分量的符号，并将其用作确定符号是否与星座图案的第一或第三象限或星座图案的第二或第四象限相关联的基础。 确定实数和虚数符号分量的绝对值并用于创建第一和和第二和。 相位调整值？ 并且从第一和第二和导出增益调整值G，并且用于创建复数。 将所接收的每个符号乘以所创建的复数以提供校正的星座图案数据。

    COMPOSITE CHANNEL QUALITY ESTIMATION TECHNIQUES FOR WIRELESS RECEIVERS
    33.
    发明申请
    COMPOSITE CHANNEL QUALITY ESTIMATION TECHNIQUES FOR WIRELESS RECEIVERS 审中-公开
    无线接收机的复合信道质量估计技术

    公开(公告)号：WO2004045118A3

    公开(公告)日：2004-12-02

    申请号：PCT/US0335506

    申请日：2003-11-07

    Applicant: INTERDIGITAL TECH CORP

    Inventor： PIETRASKI PHILIP J ,  DIFAZIO ROBERT A

    IPC: H04H20/00 ,  H04L1/18 ,  H04L1/20 ,  H04W52/04 ,  H04L1/00 ,  H04Q7/00

    CPC classification number: H04B17/26 ,  H04L1/0016 ,  H04L1/1812 ,  H04L1/203 ,  H04W52/04

    Abstract: Enhanced methods for channel quality estimation utilize soft symbol output data to generate a statistic or set of statistics that are representative of BER for each of a plurality of bursts corresponding to a composite channel. The statistics are mapped into a BER estimate to generate individual BER estimates for each of the plurality of bursts. The individual BER estimates are combined to obtain an estimate of the BER for the entire composite channel. Alternatively, the BER estimate for the composite channel may then be mapped into a quality estimate for the composite channel using a monotonic function.

    Abstract translation: 用于信道质量估计的增强方法利用软符号输出数据来产生对应于复合信道的多个突发中的每一个代表BER的统计量或统计量集合。 统计量被映射到BER估计中以针对多个突发中的每一个生成单个BER估计。 单个BER估计被组合以获得整个复合信道的BER估计。 或者，然后可以使用单调函数将复合信道的BER估计映射到复合信道的质量估计。

    METHOD FOR ESTIMATING SIGNAL MAGNITUDE, NOISE POWER, AND SIGNAL-TO-NOISE RATIO OF RECEIVED SIGNALS
    36.
    发明公开
    METHOD FOR ESTIMATING SIGNAL MAGNITUDE, NOISE POWER, AND SIGNAL-TO-NOISE RATIO OF RECEIVED SIGNALS 审中-公开
    一种估计信号量中噪声性能和信号/噪声比接收信号

    公开(公告)号：EP1671441A4

    公开(公告)日：2008-06-11

    申请号：EP04786564

    申请日：2004-08-24

    Applicant: INTERDIGITAL TECH CORP

    Inventor： LI BIN ,  STERNBERG GREGORY S ,  PIETRASKI PHILIP J

    IPC: H03C3/38 ,  H03C1/00 ,  H03D1/00 ,  H03D1/24 ,  H04J11/00 ,  H04L1/20 ,  H04L5/12 ,  H04L27/00 ,  H04L27/20 ,  H04L27/22 ,  H04L27/36 ,  H04L27/38

    CPC classification number: H04L27/38 ,  H04L1/20

    Abstract: An improved system and method for estimating one or more parameters, such as amplitude and signal-to-noise ratio, of a received signal, such as an M-QAM or q-ASK signal, is set forth herein. A first embodiment of the invention estimates the amplitude of an M-QAM signal based upon known or ascertainable phase information regarding a plurality of transmitted symbols. A respective set of received symbols corresponding to the plurality of transmitted symbols is recovered. Each of the plurality of received symbols is multiplied by a complex unit vector with a phase that is opposite in sign to the complex transmitted data symbol to generate a set of products. The set of products is summed, and the real part of the sum of products is then determined. The absolute values of the known transmitted symbols are summed to generate a total magnitude value. The real part of the sum of products is divided by the sum of transmitted magnitude values to generate an estimate of the amplitude of the M-QAM signal. Other embodiments of the present invention utilize second-order and fourth-order moments of received samples, a maximum likelihood searching process, or a Kurtosis estimation process to estimate amplitude, noise power, and signal-to-noise ratio of a received signal.

    MITIGATION OF INTERFERENCE IN CELL SEARCH BY WIRELESS TRANSMIT AND RECEIVE UNITS
    39.
    发明公开
    MITIGATION OF INTERFERENCE IN CELL SEARCH BY WIRELESS TRANSMIT AND RECEIVE UNITS 审中-公开
    VERRINGERUNG VONSTÖRUNGEN贝尔德莱塞尔切尔德拉赫勒布鲁斯德 - UND EMPFANGSEINHEITEN

    公开(公告)号：EP1537678A4

    公开(公告)日：2005-12-21

    申请号：EP03755821

    申请日：2003-09-12

    Applicant: INTERDIGITAL TECH CORP

    Inventor： PIETRASKI PHILIP J ,  DEMIR ALPASLAN ,  GRIECO DONALD M

    IPC: H04B1/707

    CPC classification number: H04B1/70735 ,  H04B1/70755 ,  H04B1/7083 ,  H04B1/709 ,  H04B1/7103 ,  H04B2201/70707

    Abstract: The invention provides embodiments to facilitate cell search. In one embodiment, received samples are split into a plurality of sample sets for processing. Each of the sets is processed and an accumulated result is divided by an estimated noise value. In another embodiment, a code correlator correlates the received signal with a primary synchronization code and an auxiliary code correlator having a same length as the code correlator correlates the received signal with a code having a low cross correlation with the primary synchronization code. In another embodiment, a division of an accumulated result with a noise estimate is performed using indexes of the most significant bits.

    Abstract translation: 本发明提供了促进小区搜索的实施例。 在一个实施例中，接收到的样本被分成多个样本集以供处理。 处理每个集合并将累积结果除以估计的噪声值。 在另一实施例中，码相关器将接收信号与具有与码相关器相同长度的主同步码和辅助码相关器相关，所述码相关器将接收信号与具有与主同步码低互相关的码进行相关。 在另一个实施例中，使用最高有效位的索引执行累积结果与噪声估计的划分。

    DETECTION, AVOIDANCE AND/OR CORRECTION OF PROBLEMATIC PUNCTURING PATTERNS IN PARITY BIT STREAMS USED WHEN IMPLEMENTING TURBO CODES
    40.
    发明公开
    DETECTION, AVOIDANCE AND/OR CORRECTION OF PROBLEMATIC PUNCTURING PATTERNS IN PARITY BIT STREAMS USED WHEN IMPLEMENTING TURBO CODES 审中-公开
    ERKENNUNG，VERMEIDUNG UND / ODER KORREKTUR VON PROBLEMATISCHENPUNKTIERUNGSMUSTERN in BEI DER IMPLEMENTIERUNG VON TURBOCODESVERWENDETENPARITÄTSBITSTRÖMEN

    公开(公告)号：EP1573923A4

    公开(公告)日：2008-10-08

    申请号：EP03796549

    申请日：2003-12-03

    Applicant: INTERDIGITAL TECH CORP

    Inventor： PIETRASKI PHILIP J ,  STERNBERG GREGORY S

    IPC: H03M13/00 ,  H03M13/29 ,  H03M13/35 ,  H03M13/27

    CPC classification number: H03M13/2771 ,  H03M13/005 ,  H03M13/2792 ,  H03M13/2957 ,  H03M13/6362 ,  H03M13/6381 ,  H04L1/0067

    Abstract: Detecting, avoiding and/or correcting problematic puncturing patterns in parity bit streams used when implementing punctured Turbo codes is achieved without having to avoid desirable code rates. This enables identification/avoidance of regions of relatively poor Turbo code performance. Forward error correction comprising Turbo coding and puncturing achieves a smooth functional relationship between any measure of performance and the effective coding rate resulting from combining the lower rate code generated by the Turbo encoder (600) with puncturing of the parity bits. In one embodiment, methods to correct/avoid degradations due to Turbo coding are implemented by puncturing interactions when two or more stages of rate matching (610, 620) are employed.

    Abstract translation: 当实现收缩Turbo码时，检测，避免和/或校正奇偶比特流中的有问题的删余模式，而不必避免期望的码率。 这使得能够识别/避免Turbo代码性能相对较差的区域。 包括Turbo编码和打孔的前向纠错实现了任何性能测量和由Turbo编码器（600）生成的较低码率码与奇偶校验位的打孔组合所得到的有效码率之间的平滑函数关系。 在一个实施例中，当采用两级或更多级速率匹配（610,620）时，通过对相互作用进行收缩来实现纠正/避免由Turbo编码引起的退化的方法。

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