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    METHOD AND APPARATUS FOR PERFORMING FREQUENCY SCAN FOR WIRELESS SYSTEMS WITH VARIABLE CHANNEL BANDWIDTH
    7.
    发明申请
    METHOD AND APPARATUS FOR PERFORMING FREQUENCY SCAN FOR WIRELESS SYSTEMS WITH VARIABLE CHANNEL BANDWIDTH 审中-公开
    用于对具有可变通道带宽的无线系统进行频谱扫描的方法和装置

    公开(公告)号：US20130155883A1

    公开(公告)日：2013-06-20

    申请号：US13610652

    申请日：2012-09-11

    申请人： Supratik Bhattacharjee ,  Shivratna G. Srinivasan ,  Brian C. Banister ,  Hisham Mahmoud

    发明人： Supratik Bhattacharjee ,  Shivratna G. Srinivasan ,  Brian C. Banister ,  Hisham Mahmoud

    IPC分类号： H04W48/16 ,  H04J3/00 ,  H04W24/00

    CPC分类号： H04W48/16

    摘要： Techniques for performing a frequency scan to detect wireless systems operating on frequency channels with variable bandwidths are disclosed. In one aspect, a user equipment (UE) performs a frequency scan for a plurality of frequency channels and measures the received power of each frequency channel based on a center frequency and a bandwidth of the frequency channel. The UE identifies candidate frequency channels for acquisition based on the results of the frequency scan. In another aspect, a frequency scan of a band is performed by partitioning the band into multiple segments, measuring received powers of subcarriers or raster frequencies within each segment, and concatenating received powers of subcarriers or raster frequencies for all segments. A frequency scan is then performed based on the concatenated results for the multiple segments.

    摘要翻译： 公开了用于执行频率扫描以检测在具有可变带宽的频道上操作的无线系统的技术。 一方面，用户设备（UE）对多个频道执行频率扫描，并且基于频率信道的中心频率和带宽测量每个频道的接收功率。 基于频率扫描的结果，UE识别用于获取的候选频道。 在另一方面，通过将频带划分成多个段，测量每个段内的子载波的接收功率或光栅频率，以及连接所有段的子载波或光栅频率的接收功率来执行频带的频率扫描。 然后基于多个段的级联结果执行频率扫描。

    Multi-term demapping for multi-channel wireless communication
    8.
    发明授权
    Multi-term demapping for multi-channel wireless communication 有权
    用于多通道无线通信的多项解映射

    公开(公告)号：US08923424B2

    公开(公告)日：2014-12-30

    申请号：US12711128

    申请日：2010-02-23

    申请人： Michael L. McCloud ,  Matthias Brehler ,  Ju Won Park ,  Jong Hyeon Park ,  Je Woo Kim ,  Inyup Kang ,  Brian C. Banister

    发明人： Michael L. McCloud ,  Matthias Brehler ,  Ju Won Park ,  Jong Hyeon Park ,  Je Woo Kim ,  Inyup Kang ,  Brian C. Banister

    IPC分类号： H04B7/02 ,  H04L25/03 ,  H04B7/04

    CPC分类号： H04L25/03229 ,  H04B7/0413 ,  H04L25/03242 ,  H04L25/03318 ,  H04L2025/0342 ,  H04L2025/03426

    摘要： Providing for reduced complexity or improved accuracy in de-mapping received wireless data streams for multi-channel wireless communication is described herein. By way of example, a low-complexity likelihood algorithm can be employed to de-map data bits from the wireless data streams. In one particular example, the likelihood algorithm can approximate a received bit with a subset of received wireless symbols correlated the bit, reducing algorithm complexity. In other examples, a limited set of received wireless symbols can be employed for the subset, further reducing algorithm complexity. According to at least one other example, logarithmic terms of the algorithm can be approximated with non-logarithmic functions, such as a look-up table, series expansion, polynomial approximation, or the like. These approximations can enhance symbol de-mapping accuracy while maintaining or improving processing overhead for a wireless receiver.

    摘要翻译： 本文描述了为了解复用用于多信道无线通信的接收的无线数据流而提供降低的复杂度或提高的精度。 作为示例，可以采用低复杂度似然算法来从无线数据流解映射数据比特。 在一个特定示例中，似然算法可以用接收到的无线符号的子集近似接收到的比特，从而降低算法的复杂度。 在其他示例中，可以对该子集采用有限的一组接收到的无线符号，进一步降低了算法的复杂度。 根据至少另一个示例，算法的对数项可以用非对数函数来近似，例如查找表，串联展开，多项式近似等。 这些近似可以增强符号解映射精度，同时保持或改善无线接收机的处理开销。

    MULTI-TERM DEMAPPING FOR MULTI-CHANNEL WIRELESS COMMUNICATION
    9.
    发明申请
    MULTI-TERM DEMAPPING FOR MULTI-CHANNEL WIRELESS COMMUNICATION 有权
    多通道无线通信多用途解决方案

    公开(公告)号：US20110206151A1

    公开(公告)日：2011-08-25

    申请号：US12711128

    申请日：2010-02-23

    申请人： Michael L. McCloud ,  Matthias Brehler ,  Ju Won Park ,  Jong Hyeon Park ,  Je Woo Kim ,  Inyup Kang ,  Brian C. Banister

    发明人： Michael L. McCloud ,  Matthias Brehler ,  Ju Won Park ,  Jong Hyeon Park ,  Je Woo Kim ,  Inyup Kang ,  Brian C. Banister

    IPC分类号： H04L1/02 ,  H04L27/06

    CPC分类号： H04L25/03229 ,  H04B7/0413 ,  H04L25/03242 ,  H04L25/03318 ,  H04L2025/0342 ,  H04L2025/03426

    摘要： Providing for reduced complexity or improved accuracy in de-mapping received wireless data streams for multi-channel wireless communication is described herein. By way of example, a low-complexity likelihood algorithm can be employed to de-map data bits from the wireless data streams. In one particular example, the likelihood algorithm can approximate a received bit with a subset of received wireless symbols correlated the bit, reducing algorithm complexity. In other examples, a limited set of received wireless symbols can be employed for the subset, further reducing algorithm complexity. According to at least one other example, logarithmic terms of the algorithm can be approximated with non-logarithmic functions, such as a look-up table, series expansion, polynomial approximation, or the like. These approximations can enhance symbol de-mapping accuracy while maintaining or improving processing overhead for a wireless receiver.

    摘要翻译： 本文描述了为了解复用用于多信道无线通信的接收的无线数据流而提供降低的复杂度或提高的精度。 作为示例，可以采用低复杂度似然算法来从无线数据流解映射数据比特。 在一个特定示例中，似然算法可以用接收到的无线符号的子集近似接收到的比特，从而降低算法的复杂度。 在其他示例中，可以对该子集采用有限的一组接收到的无线符号，进一步降低了算法的复杂度。 根据至少另一个示例，算法的对数项可以用非对数函数来近似，例如查找表，串联展开，多项式近似等。 这些近似可以增强符号解映射精度，同时保持或改善无线接收机的处理开销。

    Interference reduction between OFDM carriers by frequency offset optimization
    10.
    发明授权
    Interference reduction between OFDM carriers by frequency offset optimization 有权
    通过频偏优化对OFDM载波之间的干扰减少

    公开(公告)号：US08494065B2

    公开(公告)日：2013-07-23

    申请号：US12479553

    申请日：2009-06-05

    申请人： Matthias Brehler ,  Brian C. Banister ,  Peter Gaal

    发明人： Matthias Brehler ,  Brian C. Banister ,  Peter Gaal

    IPC分类号： H04K1/10 ,  H04L27/28

    CPC分类号： H04L5/0007 ,  H04L5/0037 ,  H04L27/2657

    摘要： Systems and methodologies are described that facilitate signal separation across different carriers within a wireless communications environment. The systems and methods can identify a carrier spacing that can be based upon a tone spacing associated with two or more carriers. Such carrier spacing can be employed within a network in order to mitigate signal separation with multiple carriers. The subject innovation can further evaluate a carrier raster associated with a network in order to identify a carrier spacing to ensure orthogonality between tones from different carriers.

    摘要翻译： 描述了在无线通信环境内促进跨越不同载波的信号分离的系统和方法。 系统和方法可以识别可以基于与两个或更多个载波相关联的音调间隔的载波间隔。 这样的载波间隔可以在网络内使用，以便减轻与多个载波的信号分离。 本发明可以进一步评估与网络相关联的载波光栅，以便识别载波间隔，以确保来自不同载波的音调之间的正交性。