通信学报Issue(3)：1-8,8.DOI:10.11959/j.issn.1000-436x.2015079
抑制LOFDM系统PAPR非线性压扩变换算法
Nonlinear companding transform for PAPR reduction in lattice-OFDM system
摘要
Abstract
Since the inherent higher peak-to-average power ratio (PAPR) in lattice OFDM (LOFDM) is higher than that of conventional OFDM systems, a novel continuous and differentiable nonlinear companding scheme is investigated and analyzed when employing the conventional companding transforms. By making full use of the characteristic of the Gaus-sian-distributed original signals and employing a truncation to the distribution function of the original signals, the com-panded signals can be restricted in a specific region which consistents with the distribution of original signals. Therefore, the companded signals can not only achieve an improved PAPR and bit error ratio (BER) performance but also maintain the statistical characteristics of the original signals. Theoretical analysis and simulation results demonstrate that the pro-posed scheme substantially outperforms the conventional nonlinear companding schemes.关键词
网格正交频分复用/峰均功率比/非线性压扩变换/概率分布函数Key words
lattice OFDM/peak-to-average power ratio/nonlinear companding transform/probability distribution func-tion分类
信息技术与安全科学引用本文复制引用
彭斯明,沈越泓,袁志钢,苗誉威,简伟..抑制LOFDM系统PAPR非线性压扩变换算法[J].通信学报,2015,(3):1-8,8.基金项目
国家自然科学基金资助项目（60772083,61201242）；江苏省自然科学基金资助项目（BK2012057）；解放军理工大学预研基金资助项目（KYTYZLXY1208）Foundation Items：The National Natural Science Foundation of China (60772083,61201242) （60772083,61201242）
The Natural Science Foundation of Jiangsu Province (BK2012057) （BK2012057）
The Pre-research Foundation of PLA University of Science and Technology(KYTYZLXY1208) （KYTYZLXY1208）
