公开(公告)号：US09590828B2

公开(公告)日：2017-03-07

申请号：US14892523

申请日：2013-06-20

Applicant: Southeast University

Inventor： Dongming Wang ,  Yufei Wu ,  Ruixun Liu ,  Xiangyang Wang ,  Wenrui Tang ,  Yuqi Huang

IPC: H04B7/00 ,  H04B15/00 ,  H04L27/00 ,  H04W16/14 ,  H04L27/26

CPC classification number: H04L27/0006 ,  H04L27/265 ,  H04L27/2666 ,  H04L27/2676 ,  H04W16/14

Abstract: A blind spectrum sensing method and device based on fast Fourier transform. The method comprises: the spectrum sensing device receives a signal on an authorized spectrum band, calculates an autocorrelation coefficient of the received signal after sampling and filtering same, then performs a fast Fourier transform of the autocorrelation coefficient, acquires the modulus of the transform result, constructs determination variables on the basis of the modulus, and determine whether or not a signal of an authorized user is present. The method and device have the advantages of low calculation complexity, obviated need for authorization information characteristic, and insensitivity towards noise uncertainty, and are of great performance.

Abstract translation: 一种基于快速傅立叶变换的盲频谱感知方法和装置。 该方法包括：频谱感知装置在授权频谱带上接收信号，计算采样和滤波后的接收信号的自相关系数，然后执行自相关系数的快速傅立叶变换，获取变换结果的模数， 根据模数构建确定变量，并确定是否存在授权用户的信号。 该方法和装置具有计算复杂度低的优点，不需要授权信息特性，对噪声不确定性不敏感，性能优良。

公开(公告)号：US20160197748A1

公开(公告)日：2016-07-07

申请号：US14892523

申请日：2013-06-20

Applicant: SOUTHEAST UNIVERSITY

Inventor： Dongming Wang ,  Yufei Wu ,  Ruixun Liu ,  Xiangyang Wang ,  Wenrui Tang ,  Yuqi Huang

IPC: H04L27/00 ,  H04L27/26 ,  H04W16/14

CPC classification number: H04L27/0006 ,  H04L27/265 ,  H04L27/2666 ,  H04L27/2676 ,  H04W16/14

Abstract: A blind spectrum sensing method and device based on fast Fourier transform. The method comprises: the spectrum sensing device receives a signal on an authorized spectrum band, calculates an autocorrelation coefficient of the received signal after sampling and filtering same, then performs a fast Fourier transform of the autocorrelation coefficient, acquires the modulus of the transform result, constructs determination variables on the basis of the modulus, and determine whether or not a signal of an authorized user is present. The method and device have the advantages of low calculation complexity, obviated need for authorization information characteristic, and insensitivity towards noise uncertainty, and are of great performance.

Abstract translation: 一种基于快速傅立叶变换的盲频谱感知方法和装置。 该方法包括：频谱感知装置在授权频谱带上接收信号，计算采样和滤波后的接收信号的自相关系数，然后执行自相关系数的快速傅立叶变换，获取变换结果的模数， 根据模数构建确定变量，并确定是否存在授权用户的信号。 该方法和装置具有计算复杂度低的优点，不需要授权信息特性，对噪声不确定性不敏感，性能优良。