A New PTS OFDM Scheme with Low Complexity for PAPR Reduction

Lim, Dae‐Woon; Heo, Seok-Joong; No, Jong-Seon; Chung, Habong

doi:10.1109/tbc.2005.861605

Cited by 158 publications

(81 citation statements)

References 20 publications

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“…The scheme proposed here reduces computational complexity as indicated by CCRR for complex additions as well as multiplications, with keeping the number of candidate signal unchanged. When CCRR is compared with what evaluated in [22] the CCRR× achieved is just 50%, wherever in [23] CCRR× value of 85% is achieved for the sub-block size V=8 which is much less than 98.4 % achieved in our scheme. Similarly in [24], [25] and [26] maximum reduction of 98% is achieved for the block size of V=16 which is bit difficult to implement than V=8 for similar values of CCRR.…”

Section: Ccrrmentioning

confidence: 54%

“…Hence, we need to devise a feasible method which would reduce the computations and hence decrease the complexity of the system making it more efficient. Several low complexity PTS techniques have been suggested [12]- [22]. Some of these like [13], [16] consider a preset threshold value of PAPR to decide a sequence for decreasing complexity.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Low Computational Complexity Multiple Signal Representation Technique for PAPR Reduction in OFDM Systems

Joshi

Airee

2016

Preprint

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Orthogonal Frequency Division Multiplexing (OFDM) while being an efficient scheme for high data rate wireless communications has drawbacks such as higher Peak-to-Average Power Ratio (PAPR). To reduce PAPR, use of multiple signal representation technique such as Partial Transmit Sequence (PTS) is one of the favored techniques. However, the use of conventional PTS technique need excessive number of complex calculations in order to search for all permissible combinations of phase sequences causing steep increase in complexity in terms of complex computations. Paper aims to reduce the cumbersome process of phase selection by making use of the similarity of the phase vectors. The phase vectors are obtained sequentially and thus minimize the number of changes from one phase vector to another. Theoretical analysis shows that computational complexity is significantly reduced with the help of this proposed novel technique. We have also demonstrated that PAPR values are similar i.e. PAPR reduction capability remains similar but at reduced complexity.

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Section: Ccrrmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

A Novel Low Computational Complexity Multiple Signal Representation Technique for PAPR Reduction in OFDM Systems

Joshi

Airee

2016

Preprint

View full text Add to dashboard Cite

show abstract

“…A growing number of techniques have been proposed in the recent literature to alleviate power efficiency problem in multicarrier system through the development of PAPR reduction methods. The approaches include simplest filtering and clipping (Ochiai & Ima;, partial transmit sequence (PTS) (Lim et al;, selective mapping (Yoo; to the sophisticated trellis shaping approach (Ochia;2004). Ochiai et al (Ochia;2004) propose a new trellis shaping design based on recursive minimization of the autocorrelation sidelobes for reducing PAPR of the bandlimited orthogonal frequency division multiplexing (OFDM) signals.…”

Section: Literature Reviewmentioning

confidence: 99%

Power and Spectral Efficient Multiuser Broadband Wireless Communication System

Maity¹

2010

Satellite Communications

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“…Therefore, many schemes have been proposed and analysed in the literature to reduce the PAPR in OFDM systems, such as partial transmit sequence (PTS) [2,3], selective mapping (SLM) [4,5], scrambling [6], tone reservation and injection [7,8], unitary transformation [9], clipping [10,11] and companding [12][13][14][15]. Among them, clipping may be the simplest scheme and it has been used in some communication standards.…”

Section: Introductionmentioning

confidence: 99%

Transforming the distribution of OFDM signals for peak‐to‐average power ratio reduction

Zhu

Peng

2010

Trans Emerging Tel Tech

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SUMMARYLarge peak-to-average power ratio (PAPR) is the main drawback of orthogonal frequency division multiplexing (OFDM) systems. In this paper, a novel nonlinear scheme is proposed to reduce the PAPR. This scheme transforms the amplitude of original OFDM signals from Rayleigh distribution into beta distribution. Moreover, given different parameters, this scheme has different transformation expressions. It is demonstrated that the well-known companding schemes based on exponential function and error function are actually the special cases of the proposed scheme. Further, we derive another simpler expression of the proposed scheme. Simulation results show that the new transformation can achieve a better tradeoff between PAPR reduction and bit-error rate (BER) performance than the exponential function and error function companding schemes.

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A New PTS OFDM Scheme with Low Complexity for PAPR Reduction

Cited by 158 publications

References 20 publications

A Novel Low Computational Complexity Multiple Signal Representation Technique for PAPR Reduction in OFDM Systems

A Novel Low Computational Complexity Multiple Signal Representation Technique for PAPR Reduction in OFDM Systems

Power and Spectral Efficient Multiuser Broadband Wireless Communication System

Transforming the distribution of OFDM signals for peak‐to‐average power ratio reduction

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