Algorithm of Multi-signals Separation for Shortwave Broadband Receiver

摘要：

In this paper, an algorithm of multi-signals separation for shortwave broadband receiver is proposed that is suitable for the case where the signals are not overlapped in frequency domain. Firstly, the algorithm uses morphological filter to estimate the noise floor which is then subtracted from the overall spectrum. Secondly, a multi-resolution analysis based on wavelet is implemented in order to reduce the interference further. After an improved Welch spectrum is obtained, thirdly, a two-step procedure including adaptive threshold setting and comparison is performed for final decision making. Simulation results have proved the feasibility and performances of the separation algorithm, especially the suitableness for very weak signals detection in non-flat noise environment.

关键词： Shortwave communication multicomponents separation noise floor estimation wavelet multiresolution analysis

作者: Yan-kun Dong Dong-ling Zhang Lin-dong Ge

作者单位: National Digital Switching System Engineering & Technological Research Center Zhengzhou 450002, Chin National Digital Switching System Engineering & Technological Research CenterZhengzhou 450002, China

会议类型: 国际会议

会议名称: 2011年无线通信与信号处理国际会议(WCSP 2011)

会议地点: 南京

会议语种:英文

页码: 1-5

在线出版日期: 2011-11-09（万方平台首次上网日期，不代表论文的发表时间）