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297 条记录 (耗时 0.035 秒)

    Modulation scheme in a wireless communication system
    63.
    发明授权
    Modulation scheme in a wireless communication system 有权

    公开(公告)号：US11533211B2

    公开(公告)日：2022-12-20

    申请号：US17209430

    申请日：2021-03-23

    申请人： Ming Jia ,  Jianglei Ma

    发明人： Ming Jia ,  Jianglei Ma

    IPC分类号： H04L27/26 ,  H04B1/715 ,  H04L1/00 ,  H04L25/03 ,  H04B1/69

    摘要： A system and method of DFT-S-OFDM modulation is provided that uses a set of frequency domain patterns. For a given transmitter, for a set of DFT-S-OFDM symbols, the frequency domain pattern changes according to a time domain hopping pattern. Advantageously, the time domain hopping patterns are defined to allow only a certain amount of overlap, for example for only one DFT-S-OFDM symbol, between any two time domain hopping patterns. This functions to reduce the effect of a collision, when two transmitters use the same frequency pattern, they will do so only for part of the overall transmission. Optionally, frequency domain spectral spreading is used in the transmitter. This can further reduce the PAPR. In the receiver, successive interference cancellation may be employed to reduce the effect of colliding transmissions.

    Methods and apparatus for communicating a single carrier waveform
    64.
    发明授权
    Methods and apparatus for communicating a single carrier waveform 有权

    公开(公告)号：US11177995B2

    公开(公告)日：2021-11-16

    申请号：US16782453

    申请日：2020-02-05

    申请人： Nuwan Suresh Ferdinand ,  Ming Jia ,  Jianglei Ma

    发明人： Nuwan Suresh Ferdinand ,  Ming Jia ,  Jianglei Ma

    IPC分类号： H04L27/36 ,  H04L27/26

    摘要： Aspects of the present application provide methods and devices for time domain implementation of a single carrier waveform such as single carrier quadrature amplitude modulation (QAM) DFT-s-OFDM and single carrier Offset QAM (OQAM). A time domain implementation allows flexible symbol lengths, lower implementation complexity as a large IDFT operation is not required in the time domain and support for variable cyclic prefix (CP) length. An OQAM implementation utilizes a pre-processing step to convert a K complex QAM symbol sequence into a 2K OQAM symbol sequence and generates a sequence for transmission in the time domain as opposed to the frequency domain.

    Method and system for non-orthogonal multiple access communication
    65.
    发明授权
    Method and system for non-orthogonal multiple access communication 有权

    公开(公告)号：US11050532B2

    公开(公告)日：2021-06-29

    申请号：US16369023

    申请日：2019-03-29

    申请人： Ming Jia ,  Jianglei Ma ,  Alireza Bayesteh ,  Sanjeewa Herath

    发明人： Ming Jia ,  Jianglei Ma ,  Alireza Bayesteh ,  Sanjeewa Herath

    IPC分类号： H04L5/00 ,  H04L27/26 ,  H04L1/00

    摘要： A bit-level operation may be implemented prior to modulation and resource element (RE) mapping in order to generate a NoMA transmission using standard (QAM, QPSK, BPSK, etc.) modulators. In this way, the bit-level operation is exploited to achieve the benefits of NoMA (e.g., improved spectral efficiency, reduced overhead, etc.) at significantly less signal processing and hardware implementation complexity. The bit-level operation is specifically designed to produce an output bit-stream that is longer than the input bit-stream, and that includes output bit-values that are computed as a function of the input bit-values such that when the output bit-stream is subjected to modulation (e.g., m-ary QAM, QPSK, BPSK), the resulting symbols emulate a spreading operation that would otherwise have been generated from the input bit-stream, either by a NoMA-specific modulator or by a symbol-domain spreading operation.

    System and method for employing outer codes with non-equal length codeblocks field
    66.
    发明授权
    System and method for employing outer codes with non-equal length codeblocks field 有权

    公开(公告)号：US10454625B2

    公开(公告)日：2019-10-22

    申请号：US15873478

    申请日：2018-01-17

    申请人： Ming Jia ,  Jianglei Ma

    发明人： Ming Jia ,  Jianglei Ma

    IPC分类号： H04L1/18 ,  H03M13/00 ,  H04L1/00 ,  H03M13/29 ,  H03M13/11 ,  H03M13/15

    摘要： Methods are disclosed herein for generating and using outer codes based on non-equal length code blocks. In one embodiment, the outer code has a length equal to the length of the longest code block. This can be achieved by padding shorter code blocks such that they are also of equal length to the longest code block. The padding may be a standardized pseudo-random pattern or a standardized repeating pattern. In another embodiment, the outer code has a length shorter than the length of the longest code block. If a code block is received in error it may be recovered by using one or more of: the first outer code block, information bits of other code blocks and the parity bits of the failed code block.

    Systems and methods for grant-free uplink transmission
    67.
    发明授权
    Systems and methods for grant-free uplink transmission 有权

    公开(公告)号：US10448368B2

    公开(公告)日：2019-10-15

    申请号：US15783515

    申请日：2017-10-13

    申请人： Alireza Bayesteh ,  Jianglei Ma ,  Ming Jia

    发明人： Alireza Bayesteh ,  Jianglei Ma ,  Ming Jia

    IPC分类号： H04W72/04 ,  H04W72/12 ,  H04B7/04 ,  H04L1/18 ,  H04W74/08 ,  H04B7/06 ,  H04B7/12

    摘要： Communication resources for grant-free transmission are assigned to a User Equipment (UE) in a communication system. A diversity channel for uplink grant-free data transmission includes uplink grant free transmission resources assigned to the UE. The uplink grant-free transmission resources include one or more positions corresponding to partitions of an access region and one or more positions corresponding to resource elements (REs) in each partition of the access region. At a UE, an uplink initial data transmission and a subsequent transmission are transmitted by the UE in the diversity channel without receiving grant information from a network equipment. At a network equipment, the uplink initial data transmission and the subsequent transmission are received in the diversity channel without transmitting grant information to the UE.

    Method for transmitting a reference signal having a low peak to average power ratio
    68.
    发明授权
    Method for transmitting a reference signal having a low peak to average power ratio 有权

    公开(公告)号：US10355901B2

    公开(公告)日：2019-07-16

    申请号：US15782400

    申请日：2017-10-12

    申请人： Ming Jia ,  Jianglei Ma

    发明人： Ming Jia ,  Jianglei Ma

    IPC分类号： H04L27/26 ,  H04J13/00 ,  H04J11/00

    摘要： Aspects of the description provide a method and devices to allow frequency domain spectral shaping (FDSS) to be used on both a reference sequence and data to enable low PAPR. Being able to use FDSS on both the reference sequence and data allows the FDSS to be transparent to the receiver. The method comprises obtaining a first sequence, wherein the first sequence is a base sequence of a set of base sequences, the set of base sequences comprising sub group base sequences, the first sequence obtained by cyclically repeating the sub group sequences at least once; and transmitting, by the device, a reference signal based on the first sequence.

    SYSTEMS AND METHODS FOR TRANSMISSION PAIRING MIXED TRANSMISSION MODES
    69.
    发明申请
    SYSTEMS AND METHODS FOR TRANSMISSION PAIRING MIXED TRANSMISSION MODES 有权
    用于传输配对混合传输模式的系统和方法

    公开(公告)号：US20160365905A1

    公开(公告)日：2016-12-15

    申请号：US14738144

    申请日：2015-06-12

    申请人： Hao Hu ,  Ming Jia ,  Jianglei Ma

    发明人： Hao Hu ,  Ming Jia ,  Jianglei Ma

    IPC分类号： H04B7/04 ,  H04L27/34 ,  H04L25/497

    CPC分类号： H04B7/0456 ,  H04B7/0482 ,  H04B7/0697 ,  H04L25/497 ,  H04L27/3488 ,  H04L27/3494 ,  H04W88/02 ,  H04W88/08

    摘要： Methods and systems for transmitting a signal. A first signal from a first device operating in spatial multiplexing transmission is concatenated with a second signal from a second device operating without spatial multiplexing transmission to generate a concatenated signal in a non-linearly superpositioned constellation, in which a portion of the constellation corresponding to the first signal is symmetrical about each of the real and imaginary axes. The concatenated signal is processed according to transmission processing of the second device, to generate a processed signal. The processed signal is transmitted.

    摘要翻译： 发送信号的方法和系统。 来自在空间复用传输中工作的第一设备的第一信号与来自不进行空间复用传输的第二设备的第二信号连接，以在非线性叠加星座中生成级联信号，其中星座的一部分对应于 第一个信号是关于每个实数和虚轴对称的。 根据第二设备的传输处理来处理级联的信号，以产生处理的信号。 处理后的信号被发送。

    Method and system for space code transmit diversity of PUCCH
    70.
    发明授权
    Method and system for space code transmit diversity of PUCCH 有权
    PUCCH的空间码发射分集方法和系统

    公开(公告)号：US09036663B2

    公开(公告)日：2015-05-19

    申请号：US13119630

    申请日：2009-09-18

    申请人： Mohammadhadi Baligh ,  Masoud Ebrahimi Tazeh Mahalleh ,  Jianglei Ma ,  Hua Xu ,  Ming Jia ,  Amir Khandani

    发明人： Mohammadhadi Baligh ,  Masoud Ebrahimi Tazeh Mahalleh ,  Jianglei Ma ,  Hua Xu ,  Ming Jia ,  Amir Khandani

    IPC分类号： H04J13/18 ,  H04L1/06 ,  H04B7/06 ,  H04J13/00

    CPC分类号： H04J13/18 ,  H04B7/0669 ,  H04L1/0668

    摘要： Aspects of the invention are directed to a transmit diversity method for use in a wireless terminal having a plurality of antennas and a wireless terminal configured to implement the method. The transmit diversity method includes using a different orthogonal sequence for each antenna, or group of antennas, for transmitting an uplink control channel from a wireless terminal to a base station. A first step of the method involves assigning at least one orthogonal sequence to one or more of the plurality of antennas, each of the plurality of antennas being assigned at least one orthogonal sequence. Once the orthogonal sequence is assigned, a further step involves scrambling a signal to be transmitted on the physical uplink control channel (PUCCH) using the at least one orthogonal sequence for each antenna thereby producing a scrambled PUCCH for transmission by each antenna. The scrambled PUCCH can then be transmitted on the plurality of antennas.

    摘要翻译： 本发明的方面涉及一种用于具有多个天线的无线终端和被配置为实现该方法的无线终端的发射分集方法。 发射分集方法包括对于每个天线或天线组使用不同的正交序列，用于从无线终端向基站发送上行链路控制信道。 该方法的第一步涉及将至少一个正交序列分配给多个天线中的一个或多个，多个天线中的每一个被分配至少一个正交序列。 一旦分配了正交序列，另外的步骤包括使用每个天线的至少一个正交序列来扰乱在物理上行链路控制信道（PUCCH）上发送的信号，从而产生用于每个天线发送的加扰PUCCH。 然后可以在多个天线上发送加扰的PUCCH。