CAJ | 학술논문

基于独立成分分析( ICA)时域滤波的时相调制( TPM)通信系统中的噪声干扰对系统性能有很大的影响。采用稀疏编码方法对TPM通信中的噪声进行抑制。首先对观测信号采用稀疏编码方法进行稀疏编码，然后对处理后的信号使用压缩方法处理，从而将ICA过程中对噪声所代表的小的变元值变小或置零，最终达到对噪声的削弱。仿真表明，稀疏编码方法对TPM通信中的噪声确实有较好的抑制，与不采用所提方法相比，大约有1 dB的系统误码性能提高。
기우독립성분분석( ICA)시역려파적시상조제( TPM)통신계통중적조성간우대계통성능유흔대적영향。채용희소편마방법대TPM통신중적조성진행억제。수선대관측신호채용희소편마방법진행희소편마，연후대처리후적신호사용압축방법처리，종이장ICA과정중대조성소대표적소적변원치변소혹치령，최종체도대조성적삭약。방진표명，희소편마방법대TPM통신중적조성학실유교호적억제，여불채용소제방법상비，대약유1 dB적계통오마성능제고。
The noise interference would bring tremendous influence on the Time-phase modulation system based on Independent Component Analysis( ICA) time domain filtering. This paper adopts sparse coding technology to suppress noise for time-phase modulation( TPM) communication signals. Firstly,sparse cod-ing method is adopted to encode with regard to observation signals and then the processed signals are com-pressed,thus these small argument-values are substituted by smaller or zero value and the noise is sup-pressed. The simulation shows that sparse coding method has suppressed noise better for the TPM commu-nication system and it can improve approximately 1 dB of system error performance.