CAJ | 학술논문

针对在OFDM通信系统中，基于压缩感知的窄带干扰检测时间过长的问题，提出了将自适应匹配追踪算法应用到压缩感知理论的信号重构过程中的算法。该算法可在未知干扰稀疏度的情况下，自适应地调整候选集原子的个数，在低于奈奎斯特采样频率前提下，快速实现单个及多个窄带干扰信号检测。仿真结果表明：所提算法能够有效地实现窄带干扰检测且运行速度快，改善了OFDM通信系统的性能。
침대재OFDM통신계통중，기우압축감지적착대간우검측시간과장적문제，제출료장자괄응필배추종산법응용도압축감지이론적신호중구과정중적산법。해산법가재미지간우희소도적정황하，자괄응지조정후선집원자적개수，재저우내규사특채양빈솔전제하，쾌속실현단개급다개착대간우신호검측。방진결과표명：소제산법능구유효지실현착대간우검측차운행속도쾌，개선료OFDM통신계통적성능。
With orthogonal frequency-division multiplexing ( OFDM) , there is a problem with taking a long time to detect narrow band interference based on SAMP . This paper proposes an algorithm in which the adaptive matching pursuit algorithm is applied to the signal reconstruction of compressed sensing. The algorithm can automatically ad-just the number of atoms in the candidate set without knowing the prior information of the sparsity, and can realize the detecting single and multiple narrow band interference signals quickly below the Nyquist sampling rate. Simula-tion results show that the proposed algorithm can achieve the detection of narrow band interference accurately and has the merits of running faster which improves the performance of the OFDM communication system.