A Novel SLM Scheme for PAPR Reduction in OFDM Systems

Autor: Tian-Ming Ma, Yu-Song Shi, Ying-Guan Wang
Jazyk: angličtina
Rok vydání: 2011
Předmět:
Zdroj: Journal of Computer Networks and Communications, Vol 2011 (2011)
Druh dokumentu: article
ISSN: 2090-7141
2090-715X
DOI: 10.1155/2011/195740
Popis: 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.
Databáze: Directory of Open Access Journals
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