摘要
本文提出了一种适用于Turbo网格编码调制(T-TCM)系统的简化Log-MAP算法,它可以轻松在硬件实现。我们探索了一种新的分段函数代替Log-MAP算法中的雅克比对数校正项,用这个方法可以损失很小的性能增益去简化Log-MAP算法。仿真结果证明我们的方法可以用非常低的复杂度实现和Log-MAP算法几乎相同的性能。此外,与S.Talakoub等人提出的improved MAX-Log-MAP算法相比,我们的算法降低了大约39%的复杂度,并且完全没有性能损失。
A simplified decoding algorithm for turbo trellis-coded modulation （ T-TCM） is proposed, which is easy to implement in hardware. The algorithm exploits a new piece-wise function to replace the logarithmic term of the Jacobian logarithm based on the MacLaurin Series. Simulation results show that the proposed algorithm can archive log-MAP-similar decoding performance with a much lower computa-tional complexity. It can reduce about 40% of calculation in contrast to the improved MAX-Log-MAP.
出处
《中国传媒大学学报（自然科学版）》
2014年第1期57-61,共5页
Journal of Communication University of China：Science and Technology
