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    Method and apparatus for modulation recognition of signals based on cyclic residual network
    1.
    发明授权
    Method and apparatus for modulation recognition of signals based on cyclic residual network 有权

    公开(公告)号：US11909563B2

    公开(公告)日：2024-02-20

    申请号：US17440120

    申请日：2020-07-30

    Applicant: BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS

    Inventor： Zhiyong Feng ,  Sai Huang ,  Rui Dai ,  Ping Zhang ,  Fan Ning ,  Qixun Zhang ,  Yifan Zhang ,  Zhiqing Wei

    IPC: H04L25/02 ,  G06N3/08 ,  H04L27/00 ,  G06N3/045

    CPC classification number: H04L25/0254 ,  G06N3/045 ,  G06N3/08 ,  H04L27/0012

    Abstract: The embodiments of the present application provide a method and apparatus for modulation recognition of signals based on cyclic residual network, the method comprises: obtaining a signal matrix of a to-be-recognized signal, and extracting real part information and imaginary part information of the signal matrix; generating, according to extracted real part information and imaginary part information, a real-and-imaginary-part feature matrix of the to-be-recognized signal; converting, according to a preset matrix conversion method, the real-and-imaginary-part feature matrix into an amplitude-and-phase feature matrix; and inputting the amplitude-and-phase feature matrix into a pre-trained cyclic residual network to obtain a modulation mode corresponding to the to-be-recognized signal. In the embodiments of the present application, the processing of the to-be-recognized signal is simple and easy to operate, in which neither complex algorithms nor manual processing is required, the flexibility of recognition is high, and the result of modulation recognition of the to-be-recognized signal can be accurately obtained.

    Method for frequency reuse in cellular network
    2.
    发明授权
    Method for frequency reuse in cellular network 有权
    蜂窝网络频率重用方法

    公开(公告)号：US09288678B2

    公开(公告)日：2016-03-15

    申请号：US13896454

    申请日：2013-05-17

    Applicant: Beijing University of Posts and Telecommunications

    Inventor： Xiaofeng Tao ,  Ping Zhang ,  Xiaona Li ,  Qimei Cui ,  Xiaodong Xu ,  Yingyue Xu ,  Waheed ur Rehman

    IPC: H04W16/02 ,  H04W16/30 ,  H04W16/12

    CPC classification number: H04W16/02 ,  H04W16/12 ,  H04W16/30

    Abstract: The present invention relates to the technical field of wireless communication, and discloses a method for frequency reuse based on cellular network. The method comprises the following steps: dividing the whole cellular network into a plurality of different cell clusters, wherein each cell cluster comprises three cells, every two of them being adjacent to each other; for each cell in a cell cluster, dividing the cell into a central area and an edge area according to the coverage of the cell; dividing the whole available frequency band of the network according to the user distribution and service distribution in the cell cluster; allocating divided frequency bands to the central area and the edge area in the cell cluster respectively according to preset rule; and applying the method for frequency reuse to other cell clusters, thus achieving the frequency reuse of the whole network. With the method, the average spectrum frequency efficiency of the cellular network can be improved, and interference among cells can be effectively suppressed.

    Abstract translation: 本发明涉及无线通信的技术领域，并且公开了一种基于蜂窝网络的频率复用方法。 该方法包括以下步骤：将整个蜂窝网络划分成多个不同的小区簇，其中每个小区簇包括三个小区，每个小区彼此相邻; 对于小区簇中的每个小区，根据小区的覆盖范围将小区划分成中心区域和边缘区域; 根据用户分布和服务分布对网络的整个可用频带进行划分; 根据预设规则分别将细分簇的频带分配给小区簇中的中心区域和边缘区域; 并将频率重用方法应用于其他小区集群，从而实现整个网络的频率重用。 利用该方法，可以提高蜂窝网络的平均频谱频率效率，并且可以有效地抑制小区之间的干扰。

    Linear equalization method and device for OTFS systems
    4.
    发明授权
    Linear equalization method and device for OTFS systems 有权

    公开(公告)号：US12088438B2

    公开(公告)日：2024-09-10

    申请号：US17679911

    申请日：2022-02-24

    Applicant: Beijing University of Posts and Telecommunications

    Inventor： Wenjun Xu ,  Tingting Zou ,  Hui Gao ,  Zhisong Bie ,  Ping Zhang ,  Fengyu Wang ,  Jiaru Lin

    IPC: H04W24/02 ,  H04L25/03

    CPC classification number: H04L25/03878 ,  H04W24/02

    Abstract: Disclosed is a low-complexity linear equalization method for an Orthogonal Time Frequency Space (OTFS) system. The method may include: receiving a time domain signal passing through a linear time-varying (LTV) channel; sampling the time domain signal to obtain a sampled signal; demodulating the sampled signal to obtain a demodulated signal; performing a Symplectic Finite Fourier Transform (SFFT) on the demodulated signal to obtain a sampled delay-Doppler domain signal; determining an effective channel matrix in a delay-Doppler domain under a restriction of a rectangular window according to a time domain channel matrix; determining a linear equalization matrix according to the effective channel matrix; and equalizing the sampled delay-Doppler domain signal in a low-complexity way according to the linear equalization matrix. The disclosure also discloses a linear equalization device of an OTFS system for realizing the linear equalization method and a computer-readable storage medium.

    METHOD AND APPARATUS FOR MODULATION RECOGNITION OF SIGNALS BASED ON CYCLIC RESIDUAL NETWORK
    6.
    发明申请
    METHOD AND APPARATUS FOR MODULATION RECOGNITION OF SIGNALS BASED ON CYCLIC RESIDUAL NETWORK 有权

    公开(公告)号：US20220191066A1

    公开(公告)日：2022-06-16

    申请号：US17440120

    申请日：2020-07-30

    Applicant: BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS

    Inventor： Zhiyong Feng ,  Sai Huang ,  Rui Dai ,  Ping Zhang ,  Fan Ning ,  Qixun Zhang ,  Yifan Zhang ,  Zhiqing Wei

    IPC: H04L25/02 ,  G06N3/04 ,  G06N3/08 ,  H04L27/00

    Abstract: The embodiments of the present application provide a method and apparatus for modulation recognition of signals based on cyclic residual network, the method comprises: obtaining a signal matrix of a to-be-recognized signal, and extracting real part information and imaginary part information of the signal matrix; generating, according to extracted real part information and imaginary part information, a real-and-imaginary-part feature matrix of the to-be-recognized signal; converting, according to a preset matrix conversion method, the real-and-imaginary-part feature matrix into an amplitude-and-phase feature matrix; and inputting the amplitude-and-phase feature matrix into a pre-trained cyclic residual network to obtain a modulation mode corresponding to the to-be-recognized signal. In the embodiments of the present application, the processing of the to-be-recognized signal is simple and easy to operate, in which neither complex algorithms nor manual processing is required, the flexibility of recognition is high, and the result of modulation recognition of the to-be-recognized signal can be accurately obtained.

    Method for joint optimization of schedule and resource allocation based on the genetic algorithm
    7.
    发明授权
    Method for joint optimization of schedule and resource allocation based on the genetic algorithm 有权
    基于遗传算法联合优化调度和资源分配的方法

    公开(公告)号：US09287939B2

    公开(公告)日：2016-03-15

    申请号：US13896448

    申请日：2013-05-17

    Applicant: Beijing University of Posts and Telecommunications

    Inventor： Xiaodong Xu ,  Xiaofeng Tao ,  Da Wang ,  Qimei Cui ,  Ping Zhang ,  Xin Chen ,  Dezhuang Wu

    IPC: H04B7/02 ,  H04W72/04 ,  H04J11/00

    CPC classification number: H04B7/024 ,  H04J11/0053 ,  H04W72/04 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/442

    Abstract: The invention relates to the technical field of wireless communication, and provides a method for joint optimization of schedule and resource allocation based on a genetic algorithm, which is applied in a CoMP communication system. The method includes steps of: S1, encoding chromosome; S2, initializing setting; S3, computing fitness value; S4, determining whether the optimal solution is better than an elite: if yes, updating the elite and executing S5, and if no, turning to S5; S5, determining whether a predetermined generation of population has been generated or not, if no, executing S6, otherwise, turning to S8; S6, participating reproduction process to generate two offspring chromosome individuals; S7, determining whether a predetermined number of offspring chromosome individuals have been generated, if yes, turning to S3 to compute again; otherwise keeping on reproduction; S8, performing schedule and resource allocation according to a solution corresponding to the elite. Under the condition of satisfying schedule limitation and power limitation, the method can, by uniting schedule and resource allocation, efficiently optimize system performance with less computing complexity.

    Abstract translation: 本发明涉及无线通信技术领域，并提供了一种基于遗传算法联合优化调度和资源分配的方法，该方法应用于CoMP通信系统中。 该方法包括以下步骤：S1，编码染色体; S2，初始化设置; S3，计算适应度值; S4，确定最优解是否优于精英：如果是，更新精英并执行S5，如果否，转向S5; S5，确定是否已经生成了预定生成的群体，否则执行S6，否则转到S8; S6，参与繁殖过程产生两个后代染色体个体; S7，确定是否已经生成了预定数量的后代染色体个体，如果是，则转向S3再次计算; 否则继续生殖; S8，根据与精英对应的解决方案执行时间表和资源分配。 在满足时间表限制和功率限制的条件下，该方法可以通过计划和资源分配结合，以较少的计算复杂度有效优化系统性能。

    Arithmetic encoding and decoding method based on semantic source and related device
    8.
    发明授权
    Arithmetic encoding and decoding method based on semantic source and related device 有权

    公开(公告)号：US12192467B1

    公开(公告)日：2025-01-07

    申请号：US18895959

    申请日：2024-09-25

    Applicant: Beijing University of Posts and Telecommunications

    Inventor： Kai Niu ,  Zijian Liang ,  Jin Xu ,  Ping Zhang

    IPC: H04N19/13 ,  H04N19/70 ,  H04N19/91

    Abstract: Disclosed is an arithmetic encoding method based on a semantic source, which is applied to an encoder. In this method, a preset encoding interval of the semantic source and a syntax symbol sequence containing syntax symbols are obtained. For each syntax symbol of the syntax symbols, a target synonymous subset of the syntax symbol is determined from preset synonymous subsets of the syntax symbol. The target synonymous subset of the syntax symbol is encoded according to the preset encoding interval through an arithmetic encoding algorithm to obtain an encoded result sequence corresponding to the syntax symbol sequence. After obtaining a sequence length of the syntax symbol sequence, the sequence length and the encoded result sequence are sent to a decoder for decoding.

    Radar and communication integrated cooperative detection method and apparatus based on beam power distribution
    9.
    发明授权
    Radar and communication integrated cooperative detection method and apparatus based on beam power distribution 有权

    公开(公告)号：US11703564B2

    公开(公告)日：2023-07-18

    申请号：US17420283

    申请日：2020-06-15

    Applicant: Beijing University of Posts and Telecommunications

    Inventor： Zhiyong Feng ,  Zixi Fang ,  Zhiqing Wei ,  Ping Zhang ,  Qixun Zhang ,  Xiaoqi Qin

    IPC: G01S7/40 ,  G01S7/00 ,  G01S13/00 ,  G01S13/91

    CPC classification number: G01S7/40 ,  G01S7/006 ,  G01S7/4013 ,  G01S13/006 ,  G01S13/91

    Abstract: Provided are a radar communication integrated cooperative detection method and apparatus based on beam power distribution. The method comprises: determining a farthest detection distance and a detection volume of a single radar in a radar communication integrated system during transmitting of a detection beam when the radar has a preset transmit power; determining a communication success probability of each pair of radars during transmitting communication beams; determining a detection area volume of each pair of radars under different power distribution coefficients based on the farthest detection distance, the detection volume, a different power distribution coefficient of the single radar, and the communication success probability of each pair of radars; determining a power distribution coefficient corresponding to a largest detection area volume from different detection area volumes as a current power distribution coefficient; and determining total detection volume of the radar communication integrated system based on the detection area volume of each pair of radars and the current power distribution coefficient.

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