电子科技大学学报Issue(4)：508-513,6.DOI:10.3969/j.issn.1001-0548.2014.04.006
时相调制的陷波滤波技术研究
Study on Notch Filter Technology of Time-Phase Modulation
摘要
Abstract
Considering the power spectrum of time-phase modulation (TPM), this paper presents a notch filter design technique which can extract the phase change characteristics of TPM. The notch filter is designed according to the parameters of TPM signals. The received TPM signals are filtered by the notch filter, which can weaken the amplitude of time-phase modulation signals at the carrier frequency point and highlight the amplitude at phase change period at the same time. So the phase change information is converted into the amplitude information that can be detected through some amplitude threshold. Finally, the detailed simulation and analysis on notch filter effect, BER performance and bandwidth efficiency are presented. The simulation results show that the TPM system adopting notch filter technology can effectively recover the input digital information and improve the bandwidth efficiency, while maintaining the system transmission performance.关键词
频带利用率/误码性能/陷波滤波/相位突变/时相调制Key words
bandwidth efficiency/BER performance/notch filter/phase change/time-phase modulation分类
信息技术与安全科学引用本文复制引用
赵培洪,王红星,平殿发,毛忠阳,吴学文..时相调制的陷波滤波技术研究[J].电子科技大学学报,2014,(4):508-513,6.基金项目
国家自然科学基金(60772056)；山东省“泰山学者”建设工程专项经费资助 （60772056）
