Novel Low-Complexity SLM Schemes for PAPR Reduction in OFDM Systems

Li, Chih-Peng; Wang, Sen-Hung; Lee, Kun-Sheng; Wang, Chin-Liang

doi:10.1109/glocom.2008.ecp.873

Cited by 35 publications

(54 citation statements)

References 8 publications

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“…Wang [5]. Wang and Ouyang have proposed to use a low-complexity method to replace IFFTs in the SLM scheme [10], even using random phase rotation vector and cyclically shifting to enhance the PAPR reduction performance [11], which gives us a good idea to further improve its algorithm.…”

Section: A Novel Slm Schemementioning

confidence: 99%

“…Deterministic schemes, such as clipping [3], deliberately clip the peak amplitude of the OFDM signal to some desired maximum level. Probabilistic schemes, such as partial transmit sequences (PTS) [4,5] and SLM [6][7][8][9][10][11][12], statistically improve the characteristics of the PAPR distribution of the OFDM signals without signal distortion.…”

Section: Introductionmentioning

confidence: 99%

“…In Section 3, a novel PAPR reduction scheme is proposed, and its principle is given. Section 4 presents a comparison of the novel scheme and the conventional scheme, the scheme in [5,[9][10][11][12] in terms of PAPR reduction performances, and their computational complexity, and finally, the brief conclusions are given in Section 5.…”

Section: Introductionmentioning

confidence: 99%

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A Novel SLM Scheme for PAPR Reduction in OFDM Systems

Shi

Wang

2011

Journal of Computer Networks and Communications

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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

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Section: A Novel Slm Schemementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Novel SLM Scheme for PAPR Reduction in OFDM Systems

Shi

Wang

2011

Journal of Computer Networks and Communications

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“…To reduce the occurrence probability of the peaks, several techniques can be used [24][25][26]. These techniques take http://asp.eurasipjournals.com/content/2014/1/121 place before and after the modulation.…”

Section: Optimization Problemmentioning

confidence: 99%

Closed-form approximations of the peak-to-average power ratio distribution for multi-carrier modulation and their applications

Chafii

Palicot

Gribonval

2014

EURASIP J. Adv. Signal Process.

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The theoretical analysis of the peak-to-average power ratio (PAPR) distribution for an orthogonal frequency division multiplexing (OFDM) system, depends on the particular waveform considered in the modulation system. In this paper, we generalize this analysis by considering the generalized waveforms for multi-carrier (GWMC) modulation system based on any family of modulation functions, and we derive a general approximate expression for the cumulative distribution function (CDF) of its PAPR, for both finite and infinite integration time. These equations allow us to directly find the expressions of the PAPR distribution for any particular functions and characterize the behaviour of the PAPR distribution associated with different transmission and observation scenarios. In addition to that, a new approach to formulating the PAPR reduction problem as an optimization problem, is presented in this study.

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“…Various approaches have been proposed to reduce the PAPR such as clipping and filtering [4]- [8], peak windowing [9]- [11], companding [12]- [18], coding techniques [19]- [27], selected mapping [28]- [30], partial transmit sequence [31]- [35], interleaving [36] [37], tone injection [38] [39], tone reservation [38]- [40], active constellation extension [41] and so on. Although some techniques of PAPR reduction have been summarized in [42], it is still needed to give a comprehensive review including some motivations and innovations of PAPR reductions in recent years, such as reduced complexity and power saving.…”

Section: Introductionmentioning

confidence: 99%