| 袁建国,李璋超,胡云霞,盛泉良,林金朝,庞宇.光OFDM系统中一种改进的SLM峰均比抑制方案[J].光电子激光,2015,26(1):75~80 |
| 光OFDM系统中一种改进的SLM峰均比抑制方案 |
| An improved SLM scheme of the PAPR reduction for optical OFDM systems |
| 投稿时间：2014-04-03 |
| DOI： |
| 中文关键词: 光OFDM(O-OFDM)系统 峰值平均功率比(PAPR) 选择性 映射法(SLM) 复杂度 |
| 英文关键词:optical orthogonal frequency division multiplexing (O-OFDM) system peak-to -average-power-ratio (PAPR) selected mapping (SLM) complexity |
| 基金项目:重庆高校创新团队建设计划、国家自然科学基金(61472464)和重庆邮电大学(重庆市)研究生科 研创新(CYS14144)资助项目 (重庆邮电大学 光纤通信技术重点实验室,重庆 400065) |
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| 中文摘要: |
| 针对光正交频分复用(O-OFDM)系统中峰值平均功 率比(PAPR)较高的缺点,对PAPR抑制技术的选择性 映射法(SLM) 进行了深入研究。基于低复杂度SLM方案的深入研究,提出了一种改进的次PAP R选择的思 想与低复杂度SLM相结合的PAPR抑制方案。改 进的SLM方案能够成倍降低传统SLM方案的计算复杂 度。仿真分析表明,改进的SLM方案在载波数为256的O-OFDM系统中,计算复杂度能降低50%以上,并 且随着子载波数的增加,其复杂度降低程度更为高效；同时,该改进的SLM方案又能使其PAPR抑制性能优于传统的SLM方案,从而进一步提升了低复杂度SLM 方案的实用价值。 |
| 英文摘要: |
| According to the defect of the high pe ak-to-average-power-ratio (PAPR) in optical orthogonal frequency division mu ltiplexing (O-OFDM) systems,the selected mapping (SLM) method for PAPR reduction technologies has been deeply studied.An improved PAPR reduction t echnology,which combines the idea of the second PAPR selection and the low-complexity SLM scheme,is proposed .The improved SLM scheme,compared with the conv entional SLM scheme, can significantly reduce the computational complexity.The simulation analysis s hows that the improved SLM scheme can reduce the computational complexity more than 50% for the optical OFDM systems with 256subcarriers.And with the increase of the number of subcarriers,the computational complexity can be effectively reduced.At the same time,the PAPR reduction performance of the improved SLM scheme is superior to that of the conventional SLM scheme.As a result,the improved SLM scheme can further pro mote the practical value of the low-complexity SLM scheme. |
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