中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

45 records (took 0.024 seconds)

    TECHNIQUE TO SELECT TRANSMISSION PARAMETERS
    1.
    发明申请
    TECHNIQUE TO SELECT TRANSMISSION PARAMETERS 审中-公开
    选择传输参数的技术

    公开(公告)号：WO2005015815A3

    公开(公告)日：2005-06-02

    申请号：PCT/US2004024057

    申请日：2004-07-28

    Applicant: INTEL CORP

    Inventor： JACOBSEN ERIC ,  BO XIA

    IPC: H04L1/00 ,  H04L27/26

    CPC classification number: H04L27/2602 ,  H04L1/0002 ,  H04L1/0009 ,  Y02D50/10

    Abstract: Some OFDM communication systems may transport payloads or data blocks of varying lengths. In many cases, the end of the transmitted data block may not align with the end of an OFDM symbol, resulting in an unused portion of one or more OFDM symbols. Thus, for example, there may be one or more unmodulated (or unused) subcarriers in the final OFDM symbol for the data block. In many systems, this may be handled by zero-extending the data or repeating the data until the final OFDM symbol is filled. Unfortunately, simply data repeating or zero-extending to fill the OFDM symbol wastes valuable OFDM symbol resources. There may be a need for a technique to make more efficient use of an unused or unmodulated portion of OFDM symbols. Various embodiments are described to select or adjust transmission parameters.

    Abstract translation: 一些OFDM通信系统可以传输不同长度的有效载荷或数据块。 在许多情况下，发送的数据块的结束可能不与OFDM符号的结尾对齐，导致一个或多个OFDM符号的未使用部分。 因此，例如，在数据块的最终OFDM符号中可能存在一个或多个未调制（或未使用的）子载波。 在许多系统中，这可以通过零扩展数据或重复数据来处理，直到最后的OFDM符号被填充。 不幸的是，简单地数据重复或零扩展以填充OFDM符号浪费有价值的OFDM符号资源。 可能需要一种技术来更有效地使用OFDM符号的未使用或未调制的部分。 描述了各种实施例来选择或调整传输参数。

    FORWARD ERROR CORRECTION CODING IN COMMUNICATION NETWORKS
    2.
    发明申请
    FORWARD ERROR CORRECTION CODING IN COMMUNICATION NETWORKS 审中-公开
    通信网络中的前向纠错编码

    公开(公告)号：WO2005055505A3

    公开(公告)日：2005-08-11

    申请号：PCT/US2004037732

    申请日：2004-11-10

    Applicant: INTEL CORP ,  JACOBSEN ERIC ,  SADOWSKY JOHN

    Inventor： JACOBSEN ERIC ,  SADOWSKY JOHN

    IPC: H04L1/00 ,  H04L1/18 ,  H04L27/26

    CPC classification number: H04L1/005 ,  H04L1/0041 ,  H04L1/0057 ,  H04L27/2602

    Abstract: Methods, apparatus and systems are disclosed for block encoding/decoding information wireless networks having narrow decoding latency restrictions. A method includes identifying a length of information to be sent in a block code and encoding the information to be sent in the block code into one or more codewords, where the number of codewords and the amount of information encoded within each codeword is adjusted based on the identified length and to achieve a similar codeword error probability for each codeword considering available decoding time for decoding a last codeword is less than available decoding time for decoding a first codeword. In certain implementations low density parity check (LDPC) encoding may be used in combination with OFDM to provide reliable communications in a high throughput WLAN.

    Abstract translation: 公开了具有窄解码延迟限制的块编码/解码信息无线网络的方法，设备和系统。 一种方法包括：识别要在分组码中发送的信息的长度，并且将要在分组码中发送的信息编码成一个或多个码字，其中，码字的数量和在每个码字内编码的信息的量基于 考虑用于解码最后一个码字的可用解码时间的每个码字，所识别的长度并且实现类似的码字错误概率小于用于解码第一码字的可用解码时间。 在某些实现中，低密度奇偶校验（LDPC）编码可以与OFDM结合使用以在高吞吐量WLAN中提供可靠的通信。

    TRANSMIT POWER CONTROL WITH TRANSMITTER DIVERSITY
    3.
    发明申请
    TRANSMIT POWER CONTROL WITH TRANSMITTER DIVERSITY 审中-公开
    用发射机分集发射功率控制

    公开(公告)号：WO0219562A3

    公开(公告)日：2002-06-13

    申请号：PCT/US0126884

    申请日：2001-08-29

    Applicant: INTEL CORP ,  JACOBSEN ERIC

    Inventor： JACOBSEN ERIC

    IPC: H04B7/005

    CPC classification number: H04W52/42

    Abstract: A wireless transmitter system for use in maintaining a wireless link with a remote transceiver includes a beamforming transmit antenna structure and a power control unit for controlling transmit power levels. The system determines the direction of the remote transceiver and then generates a transmit antenna beam in that direction. The power control unit then determines the antenna gain of the generated beam and uses the antenna gain information to adjust the transmit power level of the system so that it does not exceed government mandated limits. In one embodiment, the average transmit duty cycle of the system is also used to adjust transmit power. The system is capable of achieving a maximum transmit power without exceeding applicable power limits.

    Abstract translation: 用于维持与远程收发器的无线链路的无线发射器系统包括波束形成发射天线结构和用于控制发射功率电平的功率控制单元。 系统确定远程收发器的方向，然后在该方向上生成发射天线波束。 然后功率控制单元确定所产生波束的天线增益，并使用天线增益信息来调整系统的发射功率电平，使其不超过政府规定的限值。 在一个实施例中，系统的平均传输占空比也用于调整传输功率。 该系统能够在不超过适用功率限制的情况下实现最大发射功率。

    TECHNIQUE FOR CONTINUOUS OFDM DEMODULATION
    5.
    发明申请
    TECHNIQUE FOR CONTINUOUS OFDM DEMODULATION 审中-公开
    连续OFDM解调技术

    公开(公告)号：WO03022004A3

    公开(公告)日：2003-05-08

    申请号：PCT/US0224466

    申请日：2002-08-02

    Applicant: INTEL CORP

    Inventor： JACOBSEN ERIC

    IPC: H04L27/26

    CPC classification number: H04L27/2662 ,  H04L27/2607 ,  H04L27/2626 ,  H04L27/265 ,  H04L27/2672 ,  H04L27/2679

    Abstract: A technique includes receiving a signal that indicates a modulated symbol (52) during a given time slice of the signal. Sliding window frequency transformations of the signal are performed, and each sliding window (60) transformation is associated with a different time interval of the signal. One of the time intervals is selected to correspond to the time slice. The result of the frequency transformation associated with the selected time interval is used to obtain an indication of the demodulated symbol.

    Abstract translation: 一种技术包括在信号的给定时间片段期间接收指示调制符号（52）的信号。 执行信号的滑动窗口频率变换，并且每个滑动窗口（60）变换与信号的不同时间间隔相关联。 选择一个时间间隔以对应于时间片。 使用与选择的时间间隔相关联的频率变换的结果来获得解调符号的指示。

    OFDM MODULATION WITH REDUCED DFT (DISCRETE FOURIER TRANSFORM)
    6.
    发明申请
    OFDM MODULATION WITH REDUCED DFT (DISCRETE FOURIER TRANSFORM) 审中-公开
    具有减少DFT（离散傅里叶变换）的OFDM调制

    公开(公告)号：WO02093413A3

    公开(公告)日：2003-01-16

    申请号：PCT/US0210817

    申请日：2002-04-05

    Applicant: INTEL CORP

    Inventor： JACOBSEN ERIC

    IPC: H04L27/26 ,  G06F17/14

    CPC classification number: H04L27/2628

    Abstract: A technique includes basing a discrete frequency transformation on the number of subcarriers in a predetermined set of subcarriers. One or more subcarriers of the set are assigned to modulate data, and the remaining subcarriers are not assigned to modulate the data. The discrete frequency transformation is performed only on the subcarriers assigned to modulate the data, and mathematical operations that are associated with the subcarriers not assigned to modulate the data are excluded from the transformation. The cyclic prefix or the cyclic extension can be obtained by extending the temporal operation of the DFT beyond the established symbol period, realising a continuous OFDM modulation.

    Abstract translation: 一种技术包括将离散频率变换建立在预定的一组子载波中的子载波数量上。 该集合的一个或多个子载波被分配给调制数据，并且其余子载波不被分配以调制数据。 仅对分配给调制数据的子载波进行离散频率变换，并且从转换中排除与未分配调制数据的子载波相关联的数学运算。 循环前缀或循环扩展可以通过将DFT的时间操作扩展到建立的符号周期以获得，实现连续的OFDM调制。

    MULTICARRIER MIMO TRANSMISSION
    10.
    发明申请
    MULTICARRIER MIMO TRANSMISSION 审中-公开
    MULTICARRIER MIMO传输

    公开(公告)号：WO2005022681A3

    公开(公告)日：2005-07-21

    申请号：PCT/US2004025509

    申请日：2004-08-06

    Applicant: INTEL CORP

    Inventor： SADOWSKY JOHN ,  HO MINNIE ,  SANDHU SUMEET ,  MALTSEV ALEXANDER ,  JACOBSEN ERIC ,  SADRI ALI

    IPC: H04B7/04 ,  H04L1/06 ,  H04L27/26 ,  H04W16/28 ,  H04W74/02

    CPC classification number: H04W16/28 ,  H04B7/0408 ,  H04L27/2602 ,  H04W74/02

    Abstract: In an orthogonal frequency division multiplexed (OFDM) system, a transmitter and/or receiver communicate separate data streams on non-orthogonal spatial channels., Each spatial channel may use the same set of OFDM subcarriers and may take advantage of the multipath characteristics of the spatial channel allowing the communication of additional data without an increase in frequency bandwidth. Space-frequency subcarrier modulation assignments may be dynamically assigned on a per subcarrier basis as well as a per spatial channel basis to help maximize the data-carrying capacity of the channel. In some embodiments, each of the spatial channels may be associated with one of a plurality of spatially diverse antennas. In other embodiments, beamforming may be performed to allow the transmission and/or reception of signals within the spatial channels.

    Abstract translation: 在正交频分复用（OFDM）系统中，发射机和/或接收机在非正交空间信道上传送单独的数据流，每个空间信道可以使用相同的OFDM子载波集合，并且可以利用 空间信道允许附加数据的通信，而不增加频率带宽。 可以在每个子载波基础上以及每个空间信道基础上动态分配空频子载波调制分配，以帮助最大化信道的数据承载能力。 在一些实施例中，每个空间信道可以与多个空间多样的天线中的一个相关联。 在其他实施例中，可以执行波束成形以允许空间信道内的信号的发送和/或接收。

Patent Agency Ranking