Research Article
Null Subcarrier Assisted Selective Mapping for PAPR Reduction in OFDM Systems without Side Information
@INPROCEEDINGS{10.4108/eai.15-8-2015.2260855, author={Hongyi Zhao and Xianfeng Deng and Tao Jiang and Peng Wei}, title={Null Subcarrier Assisted Selective Mapping for PAPR Reduction in OFDM Systems without Side Information}, proceedings={10th EAI International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2015}, month={9}, keywords={orthogonal frequency division multiplexing (ofdm) peak-to-average power ratio (papr) selective mapping (slm) null subcarriers side information}, doi={10.4108/eai.15-8-2015.2260855} }- Hongyi Zhao
Xianfeng Deng
Tao Jiang
Peng Wei
Year: 2015
Null Subcarrier Assisted Selective Mapping for PAPR Reduction in OFDM Systems without Side Information
CHINACOM
IEEE
DOI: 10.4108/eai.15-8-2015.2260855
Abstract
In this paper, a novel selective mapping (SLM) scheme, assisted by null subcarriers, is proposed to reduce the peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals without side information (SI). The main idea of the proposed method is to employ the locations of a small percentage of null subcarriers to indicate the indexes of the phase sequences in the SLM method. At the receiver, energy detection is adopted to find out the positions of null subcarriers, from which the SI (the index of the optimal phase sequence) can be recovered. Both theoretical analysis and simulation results prove that the proposed method can get robust SI detection in good channel conditions.
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