摘要
针对目前LTE解映射算法复杂度高的缺陷,提出了一种基于LLR软判决的LTE解映射简化算法SLLR。该算法旨在通过使用对数似然比进行软判决,以简化指数计算与对数计算为主,降低LTE解映射过程中计算的复杂度。通过对标准算法与简化算法的QAM调制方式产生的误码率、误块率进行仿真和比较,结果表明该SLLR简化算法性能良好,适用于LTE通信系统。
Due to the high complexity of LTE de-mapping algorithm, a simplified LTE de-mapping algorithm SLLR （Simplified Logarithmic Likelihood Ratio） based on LLR soft-decision is proposed. This algorithm aims to simplify the index calculation and logarithmic calculation by decreasing the complexity during LTE de-mapping. By the simulations of the standard algorithm and the simplified algorithm, the bit error rate and block error rate generated by QAM modulation are compared. The results show that the performance of SLLR algorithm is good for LTE communication system.
出处
《移动通信》
2014年第8期65-71,共7页
Mobile Communications
