CAJ | 학술논문

该文在研究滤波多音(Filtered MultiTone, FMT)调制性质的基础上,给出了一种新的 FMT 系统定时同步算法.该算法将 FMT 符号的相关性和 PN 序列强自相关性结合,在保证算法性能的同时,大大缩短了构造同步符号所需训练序列的长度.此外,该文还提出了一种简单有效的整数倍子载波间隔频偏的估计算法.仿真结果表明,这两种算法在加性高斯噪声信道中性能优良,结合分集技术在多普勒频移的瑞利信道下也获得良好的估计性能.
해문재연구려파다음(Filtered MultiTone, FMT)조제성질적기출상,급출료일충신적 FMT 계통정시동보산법.해산법장 FMT 부호적상관성화 PN 서렬강자상관성결합,재보증산법성능적동시,대대축단료구조동보부호소수훈련서렬적장도.차외,해문환제출료일충간단유효적정수배자재파간격빈편적고계산법.방진결과표명,저량충산법재가성고사조성신도중성능우량,결합분집기술재다보륵빈이적서리신도하야획득량호적고계성능.
@@@@A new timing synchronous algorithm for Filtered MultiTone (FMT) system is proposed based on investigation for FMT character. The method achieved good performance with shorter train sequence for getting synchronous symbols by linking the correlation of the FMT symbols to the strong autocorrelation of PN sequence. Otherwise, a simple effective estimation for carrier frequency offset is introduced which is a integer multiple of sub-carrier spacing. The simulation results show that these two algorithms perform well in the additive Gaussian noise channel, and obtain a good estimate performance in the Doppler shift of the Rayleigh channel with diversity techniques.