【摘要】 选择性映射(SLM)技术中的相位旋转向量是影响其性能的关键因素.通过对SLM旋转向量的分析,提出了一种旋转向量序列生成算法.该算法引入了部分因子设计,通过查均匀表生成旋转向量矩阵,简单且易于实现.仿真结果表明,与传统SLM算法相比,该算法不增加任何系统复杂度,在子载波数为16,峰均功率比门限值为4.5 dB时获得了0.25,dB的性能改进.对于子载波数较多(如1,024)的环境,该算法依然有效.更多还原

【Abstract】 The rotation vector is a key factor on selected mapping(SLM) performance.By investigating the rotation vector in SLM,a generation algorithm of rotation vector sequence was proposed.The algorithm introduced fractional factor design.The target rotation vector matrix can be generated by using a uniform table,which made the proposed algorithm simple and easy.Simulation results showed that the system complexity has not any increase compared with traditional algorithm.When the number of sub-carriers was 16 and the selected peak-to-average power ratio(PAPR) threshold was 4.5 dB,PAPR of the algorithm improved about 0.25 dB.The algorithm is still effective when the number of sub-carriers is large(such as 1 024).更多还原