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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 bit error rate of a SOFDM system using a Wiener equalizer and a uniformly distributed spreading matrix of energy is less than that of an OFDM system in a frequency selective fading channel. However, the use of a Wiener equalizer introduces sub-channel interference, and each sub-element of the SOFDM system Channel SIR ratio is equal, the existing SIC algorithm can not effectively eliminate the interference.To solve this problem, a multi-resolution SIC algorithm based on packet error correction code guidance is proposed in this paper, Sub-channel interference cancellation principle and implementation process, and verify the effectiveness of the algorithm by computer simulation.