公开(公告)号：US11764840B2

公开(公告)日：2023-09-19

申请号：US17481657

申请日：2021-09-22

Applicant: Sun Patent Trust

Inventor： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC: H04B7/0456 ,  H04B7/0413 ,  H04B7/06 ,  H04J11/00 ,  H04L25/03 ,  H04L1/00 ,  H04L5/00 ,  H04L27/26 ,  H04L1/06 ,  H04L27/34 ,  H04L27/36

CPC classification number: H04B7/0456 ,  H04B7/0413 ,  H04B7/0615 ,  H04J11/0033 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0643 ,  H04L25/03343 ,  H04L25/03891 ,  H04L1/0003 ,  H04L1/0071 ,  H04L5/0007 ,  H04L27/2602 ,  H04L27/2647 ,  H04L27/3444 ,  H04L27/368

Abstract: Disclosed is a transmission scheme for transmitting a first modulated signal and a second modulated signal over the same frequency at the same time. According to the transmission scheme, a precoding weight multiplying unit multiplies a baseband signal after a first mapping and a baseband signal after a second mapping by a precoding weight and outputs the first modulated signal and the second modulated signal. In the precoding weight multiplying unit, precoding weights are regularly hopped.

公开(公告)号：US10075312B2

公开(公告)日：2018-09-11

申请号：US15453869

申请日：2017-03-08

Applicant: The Boeing Company

Inventor： Isaac M. Jeng ,  Brandon M. Jones

IPC: H04L27/20 ,  H04J13/00 ,  H04J13/12

CPC classification number: H04L27/20 ,  H04B1/707 ,  H04J13/0003 ,  H04J13/12 ,  H04L27/3411 ,  H04L27/3444 ,  H04L27/3488

Abstract: Constant-envelope phase-optimized transmission methods and apparatus are disclosed. An example method includes determining initial values of modulation phases in a first quadrant, the modulation phases associated with binary codes to be transmitted; and optimizing the initial values to second values to enable a product of an objective function to be within a threshold value.

公开(公告)号：US20180248740A1

公开(公告)日：2018-08-30

申请号：US15754043

申请日：2015-09-25

Applicant: Intel IP Corporation

Inventor： Burkhard Neurauter ,  Christian Mayer ,  Jan Zaleski ,  Jovan Markovic

IPC: H04L27/36 ,  H04L27/34

CPC classification number: H04L27/362 ,  H04L27/3444

Abstract: An apparatus for generating a radio frequency signal based on a symbol within a constellation diagram is provided. The constellation diagram is spanned by a first axis representing an in-phase component and an orthogonal second axis representing a quadrature component. The apparatus includes a processing unit configured to select one of a plurality of segments of the constellation diagram containing the symbol. The segment is delimited by two radially extending boundaries, wherein the two radially extending boundaries span an opening angle of the segment that is different from 90°. The processing unit is further configured to calculate a first coordinate of the symbol with respect to a third axis, and a second coordinate of the symbol with respect to a fourth axis. At least one of the third axis and the fourth axis coincides with one of the two radially extending boundaries. The apparatus further includes a plurality of digital-to-analog converter cells configured to generate the radio frequency signal using the first coordinate and the second coordinate.

公开(公告)号：US09948489B2

公开(公告)日：2018-04-17

申请号：US14992496

申请日：2016-01-11

Applicant: LG ELECTRONICS INC.

Inventor： Byeongkook Jeong ,  Woosuk Ko ,  Youngjin Hong ,  Sungryong Hong ,  Jaeho Hwang

IPC: H04L27/00 ,  H04L27/36 ,  H03K9/02 ,  H03D1/24 ,  H04L27/34 ,  H04B7/0413 ,  H04B7/06 ,  H04H20/71 ,  H04L1/00 ,  H04L27/26 ,  H03M13/11 ,  H03M13/27 ,  H04L27/38 ,  H04L5/00

CPC classification number: H04L27/3444 ,  H03M13/1102 ,  H03M13/1165 ,  H03M13/152 ,  H03M13/253 ,  H03M13/255 ,  H03M13/2707 ,  H03M13/2778 ,  H03M13/2792 ,  H03M13/2906 ,  H04B7/0413 ,  H04B7/0615 ,  H04H20/71 ,  H04L1/00 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0058 ,  H04L1/0071 ,  H04L1/0075 ,  H04L5/0023 ,  H04L27/0008 ,  H04L27/26 ,  H04L27/2602 ,  H04L27/2627 ,  H04L27/2697 ,  H04L27/3416 ,  H04L27/361 ,  H04L27/38 ,  H04L2001/0093

Abstract: The present invention provides a method of transmitting broadcast signals. The method includes, processing input streams into plural PLPs; encoding data of the each PLPs according to code rates, wherein the encoding data of the each PLPs further includes, encoding data of at least one PLP with LDPC codes, bit interleaving the LDPC encoded data of the PLP, mapping the bit interleaved data onto a set of constellations according to the code rate, MIMO encoding the mapped data, and time interleaving the MIMO encoded data; building at least one signal frame by mapping the encoded data of the each PLPs; and modulating data in the built signal frame by OFDM method and transmitting the broadcast signals having the modulated data, wherein the bit interelaved data of each PLPs are mapped by using either QAM, NUQ, or NUC.

公开(公告)号：US20180062904A1

公开(公告)日：2018-03-01

申请号：US15565297

申请日：2016-04-18

Applicant: LG ELECTRONICS INC.

Inventor： Seunggye HWANG ,  Hyangsun YOU ,  Bonghoe KIM ,  Kijun KIM ,  Yunjung YI

IPC: H04L27/34 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04L27/3411 ,  H04L1/08 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/18 ,  H04L27/2067 ,  H04L27/2607 ,  H04L27/2614 ,  H04L27/2615 ,  H04L27/3444 ,  H04L67/12

Abstract: One disclosure of the present specification provides a method for mapping data symbols in a wireless communication system. The method comprises the steps of: generating a first symbol sequence in which first symbols among data symbols to be transmitted are consecutively arranged; generating a second symbol sequence in which second symbols among the data symbols are consecutively arranged; and performing modulation of the first and second symbol sequences, wherein the step of performing modulation may be a phase rotation on the boundary of the first symbol sequence and the second symbol sequence.

公开(公告)号：US20170325249A1

公开(公告)日：2017-11-09

申请号：US15146539

申请日：2016-05-04

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Miguel Lopez ,  Dennis Hui ,  Henrik Sahlin

IPC: H04W72/12 ,  H04L5/00

CPC classification number: H04W72/121 ,  H04L1/08 ,  H04L5/0007 ,  H04L5/0019 ,  H04L5/0037 ,  H04L5/0091 ,  H04L27/18 ,  H04L27/2602 ,  H04L27/2626 ,  H04L27/2647 ,  H04L27/3444 ,  H04W72/042 ,  H04W72/1289

Abstract: A scheduling node (600), a transmitting node (602), a receiving node (604), and methods therein, for communication of data on a shared radio resource. The scheduling node (600) divides wireless devices into multiple groups, and assigns group-specific rotation angles to the groups so that the transmitting node (602) should apply a group-specific rotation angle when transmitting data to or from a wireless device in the corresponding group. In addition, a repetition factor is assigned to each wireless device such that the data is repeated consecutively according to the repetition factor, before transmission. The repetition factor may correspond to the number of groups.

公开(公告)号：US20170272074A1

公开(公告)日：2017-09-21

申请号：US15611822

申请日：2017-06-02

Applicant: MediaTek Inc.

Inventor： Yang-Chuan Chen ,  Chi-Hsueh Wang ,  Hsiang-Hui Chang ,  Bo-Yu Lin

IPC: H03K19/0175 ,  H03F3/217 ,  H04B1/04 ,  H04W24/02 ,  H04L25/02 ,  H04L27/20 ,  H03M1/12 ,  H04L7/00 ,  G01R21/06 ,  G01R23/00 ,  H03F1/24 ,  H04L27/34 ,  H04L25/08

CPC classification number: H03K19/017509 ,  G01R21/06 ,  G01R23/00 ,  H03F1/02 ,  H03F1/24 ,  H03F3/2178 ,  H03F3/24 ,  H03F2203/21154 ,  H03K19/017581 ,  H03M1/12 ,  H04B1/04 ,  H04B1/0475 ,  H04B2001/0408 ,  H04B2001/045 ,  H04L7/0037 ,  H04L7/0091 ,  H04L25/028 ,  H04L25/08 ,  H04L27/2053 ,  H04L27/2067 ,  H04L27/3411 ,  H04L27/3444 ,  H04W24/02

Abstract: A digital signal up-converting apparatus includes: a clock generating circuit arranged to generate a reference clock signal; an adjusting circuit coupled to the clock generating circuit and arranged to generate a first clock signal and a second clock signal according to the reference clock signal; a baseband circuit coupled to the adjusting circuit for receiving the first clock signal, wherein the baseband circuit further generates a digital output signal according to the first clock signal; and a sampling circuit coupled to the adjusting circuit and the baseband circuit for receiving the second clock signal and the digital output signal, wherein the second clock signal and the digital output signal are non-overlapping; wherein the sampling circuit samples the digital output signal based on the second clock signal and then combines the sampled digital output signal in order to generate a combined digital signal.

公开(公告)号：US09712169B2

公开(公告)日：2017-07-18

申请号：US14279336

申请日：2014-05-16

Applicant: MediaTek Singapore Pte. Ltd.

Inventor： Bing Xu ,  Li-Shin Lai ,  Chi-Hsueh Wang ,  Hsiang-Hui Chang

IPC: G01R21/06 ,  G01R23/00 ,  H03K19/0175 ,  H03F3/217 ,  H04L27/34 ,  H04B1/04 ,  H04W24/02 ,  H04L25/02 ,  H04L25/08 ,  H03M1/12 ,  H04L7/00 ,  H03F1/24 ,  H04L27/20

CPC classification number: H03K19/017509 ,  G01R21/06 ,  G01R23/00 ,  H03F1/02 ,  H03F1/24 ,  H03F3/2178 ,  H03F3/24 ,  H03F2203/21154 ,  H03K19/017581 ,  H03M1/12 ,  H04B1/04 ,  H04B1/0475 ,  H04B2001/0408 ,  H04B2001/045 ,  H04L7/0037 ,  H04L7/0091 ,  H04L25/028 ,  H04L25/08 ,  H04L27/2053 ,  H04L27/2067 ,  H04L27/3411 ,  H04L27/3444 ,  H04W24/02

Abstract: A transmit power measurement apparatus includes a transmit power detection path, a compensation circuit and a tracking circuit. The compensation circuit includes a programmable filter device and a compensation controller. The programmable filter device generates a filter output. The compensation controller sets the programmable filter device at least based on a frequency response of the transmit power detection path. The tracking circuit generates a transmit power tracking result at least based on the filter output.

公开(公告)号：US09635520B2

公开(公告)日：2017-04-25

申请号：US15060165

申请日：2016-03-03

Applicant: LG ELECTRONICS INC.

Inventor： Jinyong Choi ,  Woosuk Ko ,  Sangchul Moon ,  Sungryong Hong

IPC: H04W4/06 ,  H04B7/0413 ,  H04L27/26 ,  H04L27/36 ,  H04L27/22 ,  H04L27/34 ,  H04L27/38 ,  H04B7/10

CPC classification number: H04L27/2649 ,  H04B7/0413 ,  H04B7/10 ,  H04L27/22 ,  H04L27/2627 ,  H04L27/3444 ,  H04L27/362 ,  H04L27/38 ,  H04W4/06

Abstract: A method and an apparatus for receiving broadcast signals thereof are disclosed. The apparatus for receiving broadcast signals, the apparatus comprises a receiver to receive the broadcast signals, a demodulator to demodulate the received broadcast signals by an OFDM (Orthogonal Frequency Division Multiplex) scheme, a frame parser to parse signal frames from the demodulated broadcast signals, a MIMO (Multi Input Multi Output) processor to process service data in the parsed signal frames based on a rotation matrix with a rotation angle, a demapper to demap the MIMO processed service data and a decoder to decode the demapped service data.

公开(公告)号：US20170085405A1

公开(公告)日：2017-03-23

申请号：US14863174

申请日：2015-09-23

Applicant: Innophase Inc.

Inventor： Yang Xu ,  Sara Munoz Hermoso

IPC: H04L27/227 ,  H04L27/34

CPC classification number: H04L27/2272 ,  H04L27/3444 ,  H04L2201/02

Abstract: Systems and methods are provided for aligning amplitude and phase signals in a polar receiver. A receiver generates digital amplitude and phase signals representing the amplitude and phase of a modulated input signal. At least one of the digital signals is filtered using a fractional delay filter with a variable delay. The delay of the fractional delay filter is adjusted to align the amplitude and phase signals. In some embodiments, an error vector magnitude is determined by comparing in-phase and quadrature values of the signal with values corresponding to a constellation point, and the delay is adjusted based on the error vector magnitude. The fractional delay filter may be a finite impulse response filter with coefficients stored in a lookup table that correspond to different delays.