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    SIGNALING METHOD IN AN OFDM MULTIPLE ACCESS SYSTEM
    1.
    发明申请
    SIGNALING METHOD IN AN OFDM MULTIPLE ACCESS SYSTEM 审中-公开

    公开(公告)号：US20190273586A1

    公开(公告)日：2019-09-05

    申请号：US16417427

    申请日：2019-05-20

    Applicant: QUALCOMM Incorporated

    Inventor： Rajiv LAROIA ,  Junyi LI ,  Sathyadev Venkata UPPALA

    IPC: H04L5/00 ,  H04L27/26 ,  H04L5/02

    Abstract: A method for reducing the peak-to-average ratio in an OFDM communication signal is provided. The method includes defining a constellation having a plurality of symbols, defining a symbol duration for the OFDM communication signal, and defining a plurality of time instants in the symbol duration. A plurality of tones are allocated to a particular communication device, and a discrete signal is constructed in the time domain by mapping symbols from the constellation to the time instants. A continuous signal is generated by applying an interpolation function to the discrete signal such that the continuous signal only includes sinusoids having frequencies which are equal to the allocated tones.

    Method of Creating and Utilizing Diversity in a Multiple Carrier Communication System
    4.
    发明申请
    Method of Creating and Utilizing Diversity in a Multiple Carrier Communication System 有权
    在多载波通信系统中创建和利用分集的方法

    公开(公告)号：US20130150055A1

    公开(公告)日：2013-06-13

    申请号：US13764230

    申请日：2013-02-11

    Applicant: QUALCOMM Incorporated

    Inventor： Rajiv LAROIA ,  Junyi LI ,  Sathyadev Venkata UPPALA

    IPC: H04W36/20

    CPC classification number: H04W36/20 ,  H04W16/12 ,  H04W16/14 ,  H04W24/00 ,  H04W36/06 ,  H04W52/0235 ,  H04W52/08 ,  H04W52/281 ,  H04W52/283 ,  H04W52/286 ,  H04W52/287 ,  H04W52/288 ,  H04W52/60 ,  H04W56/00 ,  H04W68/02 ,  H04W68/025 ,  H04W72/00 ,  H04W72/048 ,  Y02D70/00

    Abstract: In many cellular systems, reusing spectrum bandwidth, creates problems in boundary regions between the cells and sectors where the signal strength received from adjacent base stations or adjacent sector transmissions of a single base station may be nearly equivalent. The invention creates a new type of diversity, referred to as multiple carrier diversity by utilizing multiple carriers, assigning different power levels to each carrier frequency at each base station, and/or offsetting sector antennas. The cell and/or sector coverage areas can be set so as to minimize or eliminate overlap between cell and/or sector boundary regions of different carrier frequencies. Mobile nodes traveling throughout the system can exploit multiple carrier diversity by detecting carriers and selecting to use a non-boundary carrier based on other system criteria in order to improve performance. Boundary carriers may, but need not be, identified and excluded from consideration for use by a wireless terminal.

    Abstract translation: 在许多蜂窝系统中，重用频谱带宽在小区和扇区之间的边界区域中产生问题，其中从相邻基站接收的信号强度或单个基站的相邻扇区传输可能几乎相等。 本发明通过利用多个载波，在每个基站上为每个载波频率分配不同的功率电平和/或补偿扇区天线来创建一种称为多载波分集的新型分集。 可以设置小区和/或扇区覆盖区域以便最小化或消除不同载波频率的小区和/或扇区边界区域之间的重叠。 在整个系统中传播的移动节点可以通过检测载波并且基于其他系统标准选择使用非边界载波来利用多载波分集，以便提高性能。 边界运营商可以但不需要被识别并排除在考虑无线终端的使用之外。

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