基于分组纠错码指导的多分辨率SIC算法

Multisolution Successive Interference Cancellation Algorithm Piloted with Block Error-Correcting

采用维纳均衡器和能量均匀分布扩频矩阵的SOFDM系统在频率选择性衰落信道中的误比特率小于OFDM系统,但是维纳均衡器的使用引入了子信道间干扰,且SOFDM系统的各子信道信干比相等,现有的相继干扰消除(SIC)算法无法有效地消除该干扰.为解决这一问题,文中提出了基于分组纠错码指导的多分辨率SIC算法,描述了该算法的子信道间干扰消除原理和实现过程,并通过计算机仿真验证了该算法的有效性.

The SOFDM with a Weiner equalizer and an energy uniformly distributed spread matrix provide a lower bit error rate in frequency selective channels than OFDM. But interference between sub channels is introduced and this interference can＇t be cancelled by existing successive interference cancellation algorithms because the SNIR of each sub-channels are the same in SOFDM. A multisolution successive interfereace cancellation algorithm piloted with block error correcting algorithm is presented in this paper. The principle and realization of the algorithm are depicted in detail. The simulation shows that the algorithm can cancel the interference between sub-channels effectively.