Selective Time-Domain Filtering for Reduced-Complexity PAPR Reduction in OFDM

被引:20
作者
Du, Zheng [1 ]
Beaulieu, Norman C. [1 ]
Zhu, Jinkang [2 ]
机构
[1] Univ Alberta, iCORE Wireless Commun Lab, Dept Elect & Comp Engn, Edmonton, AB T6G 2V4, Canada
[2] Univ Sci & Technol China, Personal Commun Network & Spread Spectrum Lab, Dept Elect Engn & Informat Sci, Hefei 230027, Peoples R China
关键词
Fading channels; filtering; orthogonal frequency division multiplexing (OFDM); peak-to-average power ratio (PAPR); PEAK-POWER REDUCTION; SIDE INFORMATION; SIGNAL; RATIO; SLM;
D O I
10.1109/TVT.2008.918716
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A new selective time-domain filtering scheme for reducing the peak-to-average power ratio (PAPR) in orthogonal frequency-division multiplexing (OFDM) systems is proposed. The proposed scheme not only relies on conventional pilot symbol channel estimation and demodulation techniques to recover the data in OFDM systems but also uses additional pilot symbols. The proposed scheme has greatly reduced complexity compared with the selective mapping (SLM) scheme and only slightly poorer performance than the SLM scheme. The new scheme achieves significant PAPR reduction at a cost of typically 0.1-0.75 dB in signal-to-noise ratio (SNR) relative to pilot symbol OFDM not having PAPR reduction.
引用
收藏
页码:1170 / 1176
页数:7
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