METHOD AND APPARATUS FOR POWER AND USER DISTRIBUTION TO SUB-BANDS IN NOMA SYSTEMS

    公开(公告)号:US20180027507A1

    公开(公告)日:2018-01-25

    申请号:US15652644

    申请日:2017-07-18

    Abstract: Power allocation in NOMA systems for example on the basis Proportional Fairness calculations depends on knowledge of user throughput on a specified sub-band, which implies that users have already been allocated to particular sub-bands. Meanwhile, maximum throughput can generally be achieved where there is the greatest possible difference in transmission power for the users on a given sub-band, so that optimal allocation of users to sub-bands requires knowledge of the power available for each user. A mechanism is proposed based on iteratively applying a waterfilling algorithm to distribute power across a progressive subset of sub-bands to provisionally distribute the power budget across that subset of sub-bands, where at each iteration the water filling algorithm is carried out for each possible combination of users assignable to the newly considered sub-band using a floor for that sub band proportional to the reciprocal of the square of the highest channel gain value of any user in that combination, and calculating a throughput for that combination with the corresponding power attribution, whereby the combination retained for the next iteration (with an additional sub-band) is whichever gives the highest throughput. This process is thus repeated until users are assigned to all sub-bands, whereupon power allocations from the last iteration are definitive.

    Method and apparatus for power and user distribution to sub-bands in NOMA systems

    公开(公告)号:US10257791B2

    公开(公告)日:2019-04-09

    申请号:US15652644

    申请日:2017-07-18

    Abstract: Power allocation in NOMA systems for example on the basis Proportional Fairness calculations depends on knowledge of user throughput on a specified sub-band, which implies that users have already been allocated to particular sub-bands. Meanwhile, maximum throughput can generally be achieved where there is the greatest possible difference in transmission power for the users on a given sub-band, so that optimal allocation of users to sub-bands requires knowledge of the power available for each user. A mechanism is proposed based on iteratively applying a waterfilling algorithm to distribute power across a progressive subset of sub-bands to provisionally distribute the power budget across that subset of sub-bands, where at each iteration the water filling algorithm is carried out for each possible combination of users assignable to the newly considered sub-band using a floor for that sub band proportional to the reciprocal of the square of the highest channel gain value of any user in that combination, and calculating a throughput for that combination with the corresponding power attribution, whereby the combination retained for the next iteration (with an additional sub-band) is whichever gives the highest throughput. This process is thus repeated until users are assigned to all sub-bands, whereupon power allocations from the last iteration are definitive.

    COMPACT MULTI-LEVEL ANTENNA
    15.
    发明申请
    COMPACT MULTI-LEVEL ANTENNA 审中-公开
    紧凑型多级天线

    公开(公告)号:US20160104933A1

    公开(公告)日:2016-04-14

    申请号:US14894895

    申请日:2014-05-30

    CPC classification number: H01Q1/36 H01Q9/0414 H01Q9/0421

    Abstract: The invention relates to a compact multi-level antenna including: a ground plane; a radiating element including n≧2 portions extending in n≧2 parallel planes in a planar pattern, the planes defining a volume above the ground plane, the radiating element including a first end connected to the ground plane and a second end ending with an open circuit.

    Abstract translation: 本发明涉及一种紧凑型多电平天线,包括:地平面; 辐射元件,其包括以平面图案在n≥2个平行平面中延伸的n≥2个部分,所述平面限定在接地平面上方的体积,所述辐射元件包括连接到接地平面的第一端和以开口 电路。

    Bung-type antenna and antennal structure and antennal assembly associated therewith

    公开(公告)号:US10944163B2

    公开(公告)日:2021-03-09

    申请号:US14905605

    申请日:2014-07-15

    Abstract: The invention relates to an antennal structure adapted to be disposed on an earth plane comprising: a three-dimensional support substrate made of a dielectric material which is partially hollowed out and comprising a peripheral wall which extends between a proximal end and a distal end, said support substrate defining an internal volume; a first conducting pattern inscribed on the peripheral wall of the support substrate, the first conducting pattern comprising a lower end adapted to be connected to an earth plane and an upper end; a second conducting pattern contained in the volume of the substrate, the second pattern being connected electrically to the upper end of the first pattern.

    Receiver architecture for linear modulation based communication systems

    公开(公告)号:US10396847B2

    公开(公告)日:2019-08-27

    申请号:US15620208

    申请日:2017-06-12

    Abstract: A receiver for Filter Bank Multicarrier frequency spread signals such as FBMC, FBMC/OQAM, OFDM, comprises a linear phase rotation module adapted to introduce a linear phase rotation to a received time domain signal, a discrete Fourier transform and a Finite Impulse response digital filter. The coefficients of the digital filter define a shift of the frequency response of the prototype filter of the receiver, and the coefficients of the digital filter are fixed so as to compensate the linear phase rotation introduced by the filter. The frequency shift introduced may be equal to the reciprocal of a power of two of the modulation sub carrier spacing.

    Compact multi-level antenna
    20.
    发明授权

    公开(公告)号:US10069198B2

    公开(公告)日:2018-09-04

    申请号:US14894895

    申请日:2014-05-30

    Abstract: The invention relates to a compact multi-level antenna including: a ground plane; a radiating element including n≥2 portions extending in n≥2 parallel planes in a planar pattern, the planes defining a volume above the ground plane, the radiating element including a first end connected to the ground plane and a second end ending with an open circuit.

Patent Agency Ranking