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OFDM系统中一种低复杂度SLM算法研究

SLM Algorithm with Low Complexity in OFDM System
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摘要 针对传统选择映射(selected mapping,SLM)中计算复杂度过高和抑制峰均比(PAPR)能力有限的问题,设计了一种低复杂度的SLM算法并用Matlab进行了仿真。该算法采用圆周移位的思想,使得整个过程仅需一个IFFT模块,同时又在IFFT后进行了序列重组来增加待选序列。最终的仿真结果表明,与传统SLM以及文献[12]中的SLM相比,在峰均比抑制效果相近时,使用该算法可以极大降低计算复杂度。 To solve the problem of high computational complexity and the limited ability of PAPR（peak-to-average power ratio） reduction in the conventional SLM（selected mapping）,a low complexity SLM scheme was designed and simulated by MATLAB.The algorithm uses the idea of cyclically shifting to realize only one IFFT throughout the entire process,at the same time,it reorganizes the sequences after IFFT to generate new candidates.The final simulation result shows that comparing with conventional SLM and the SLM scheme in／,using this algorithm can dramatically reduce computational complexity under the similar PAPR reduction performance.
作者 马天鸣 施玉松 王营冠
机构地区 中国科学院上海微系统与信息技术研究所 中国科学院无线传感网与通信重点实验室
出处 《武汉理工大学学报（信息与管理工程版）》 CAS 2012年第2期131-134,150,共5页 Journal of Wuhan University of Technology：Information & Management Engineering
基金 国家科技重大专项基金资助项目(2009ZX03006-003-01)
关键词 正交频分复用 峰均比 选择映射 IFFT orthogonal frequency division multiplexing peak-to-average power radio selected mapping IFFT
分类号 TN92 [电子电信—通信与信息系统]
  • 相关文献

参考文献12

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二级参考文献21

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武汉理工大学学报（信息与管理工程版）
2012年 第2期

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