Open AccessA Novel SLM Scheme for PAPR Reduction in OFDM Systems
Author(s) -
Tianming Ma,
Yusong Shi,
Yingguan Wang
Publication year - 2011
Publication title -
journal of computer networks and communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 23
eISSN - 2090-715X
pISSN - 2090-7141
DOI - 10.1155/2011/195740
Subject(s) - orthogonal frequency division multiplexing , computer science , reduction (mathematics) , transmission (telecommunications) , transmitter , algorithm , scheme (mathematics) , computational complexity theory , transformation (genetics) , bit error rate , process (computing) , signal (programming language) , electronic engineering , telecommunications , mathematics , decoding methods , mathematical analysis , channel (broadcasting) , biochemistry , chemistry , geometry , engineering , gene , programming language , operating system
Orthogonal frequency-division multiplexing (OFDM) is an attractive transmission technique for high-bit-rate communication systems. One major drawback of OFDM is the high peak-to-average power ratio (PAPR) of the transmitter's output signal. A novel selected mapping (SLM) scheme is proposed, which employs matrix transformation, cyclically shifting, and linear combining algorithm to generate new candidates. The novel scheme requires only one IFFT and gets more candidate transmission signals throughout the entire process. The complexity analysis and simulation results show that this algorithm can dramatically reduce computational complexity comparing with the conventional SLM scheme as in Hill et al., 2000; Yang et al., 2009; Wang and Ouyang, 2005; Li et al., 2010; and Heo et al., 2007 under the similar PAPR reduction performance
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