CAJ | 학술논문

针对非协作通信中单通道同频混合信号盲分离算法复杂度高的问题，本文在连续干扰抵消（Serial Inter-ference Cancellation，SIC）算法基础上，构建了单通道同频混合信号的信道接收模型，提出了基于 SIC 的低复杂度盲分离算法。并对信道重构中的信道截断影响进行了处理，避免了分离性能的损失。仿真结果表明，QPSK 调制方式下分离性能与已有算法性能相当，但复杂度降低了2／3，且算法对频偏误差不敏感。
침대비협작통신중단통도동빈혼합신호맹분리산법복잡도고적문제，본문재련속간우저소（Serial Inter-ference Cancellation，SIC）산법기출상，구건료단통도동빈혼합신호적신도접수모형，제출료기우 SIC 적저복잡도맹분리산법。병대신도중구중적신도절단영향진행료처리，피면료분리성능적손실。방진결과표명，QPSK 조제방식하분리성능여이유산법성능상당，단복잡도강저료2／3，차산법대빈편오차불민감。
Aimed at the high complexity problem of the single-channel co-frequency signals blind separation in non-cooper-ative communication,this paper based on the serial interference cancellation(SIC)algorithm,constructed single-channel co-frequency signals’Channel receiver model,proposed a low complexity blind separation algorithm based on SIC,and processed the channel truncation in channel reconstruction,avoid the loss of separation performance.The simulation experi-ments show that the algorithm has similar performance with existing algorithms,but its complexity is reduced by two-thirds, and it is not sensitive to the frequency offset.