Sub-optimum PTS for PAPR reduction of OFDM signals

Wang, L.; Cao, Ye

doi:10.1049/el:20080764

Cited by 31 publications

(11 citation statements)

References 5 publications

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“…Also, a distortion of the signal leads to degradation of adjacent channel interference and high bit error rate (BER) [4]. To avoid the appearance of large PAPR of OFDM signals, different methods for PAPR reduction have been proposed in the literature [5], such as coding [6], companding [7], clipping and filtering [8], constellation extension [9], tone reservation and injection [10], selected mapping [11] and partial transmit sequence [12][13][14]. Among all existing methods, the partial transmit sequence (PTS) [15] is an attractive solution due to its good performance of PAPR reduction without any distortion of transmitted signals.…”

Section: Introductionmentioning

confidence: 99%

Performance of PTS techniques with varied partition size in PAPR reduction of OFDM system

Ibraheem

Yaakob

Kadhim

et al. 2014

2014 International Conference on Computer, Communications, and Control Technology (I4CT)

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Orthogonal frequency division multiplexing (OFDM) is a promising modulation technique for transmitting large amounts of digital data through radio waves. One major drawback in OFDM communication is peak-to-average power ratio (PAPR). Mainly because of the nonlinearity of the high power amplifier, these results in high out-of-band radiation, inter-carrier interference, and bit error rate performance degradation. Partial transmit sequences (PTS), an attractive technique of PAPR reduction, provides significant PAPR reduction performance for (OFDM) signals. It essentially involves partitioning the OFDM data frame into disjoint subblocks. Adjacent partitioning (AP) scheme can be regarded as the best of the existing partitioning schemes when PAPR reduction performance and cost are considered together. In this paper, we study the impact of the size of PTS partitions on the performance through varying the size of the disjoint sub-blocks partition and comparing the PAPR reduction performance of three well known sub-block partitioning schemes namely Adjacent Partitioning (AP), Interleaved Partitioning (IP) and Pseudorandom Partitioning (PRP). Simulation results showed that performance of these PTS schemes largely depends on the chosen size of the partitions.Keywords-orthogonal frequency division multiplexing (OFDM), peak-to-average power ratio (PAPR), partial transmit sequences (PTS), sub-block partition scheme.

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Section: Introductionmentioning

confidence: 99%

Performance of PTS techniques with varied partition size in PAPR reduction of OFDM system

Ibraheem

Yaakob

Kadhim

et al. 2014

2014 International Conference on Computer, Communications, and Control Technology (I4CT)

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“…It may result in significant distortion when the transmitted signals is passed through a nonlinear device such as the power amplifier [3].In order to reduce PAPR many PAPR reduction schemes have been proposed in the literature such as as clipping and filtering [5]- [8], partial transmit sequence [9]- [16], selected mapping [17]- [23], coding schemes [24]- [28], nonlinear companding transforms [29]- [31], tone reservation (TR) and tone injection (TI) [32]- [33]. Among all existing schemes, partial transmit sequences (PTS) [34] is an important technique because of its good PAPR reduction performance without any signal distortion.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we propose a phase weighting method for PTS, named as alternate optimized recursive phase weighting method [34], [36]- [37]. Its aim is to reduce the computational complexity compared to O-PTS and PTS with RPW.…”

Section: Introductionmentioning

confidence: 99%

Computational Complexity Reduction of OFDM Signals by PTS with Alternate Optimized Recursive Phase Weighting (AO-RPW) Method

Pandey¹,

Tripathi²

2014

IJCA

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Partial transmit sequences (PTS) is one of the most attractive schemes to reduce the peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. However, the Optimal PTS (OPTS) scheme requires an exhaustive searching over all combinations of allowed phase factors. Consequently, the computational complexity increases exponentially with the number of the subblocks. Recursive phase weighting (RPW) technique is a novel method whose aim is to reduce computational complexity and achieve the same performance in PAPR reduction as compared to O-PTS. In this paper we have proposed a novel technique named as Alternate optimized Recursive phase weighting (AO-RPW) method. Theoretical analysis and simulation results show that , compared with O-PTS and PTS employing RPW, PTS with AO-RPW method reduces the computational complexity but at the cost of loss of performance for PAPR reduction.

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“…However, PTS method has very large computational complexity. Many scholars have proposed some PTS methods with computational complexity reduction [3], but these methods would bring about PAPR losses varying degrees for the system performance.…”

Section: Introductionmentioning

confidence: 99%

A PTS Optimization Scheme with Superimposed Training for PAPR Reduction in OFDM System

Luo¹,

Li²,

Wu³

et al. 2014

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Partial Transmit Sequences (PTS) is an efficient scheme for Peak-to-Average Power Ratio (PAPR) reduction in Orthogonal Frequency Division Multiplexing (OFDM) system. It does not bring any signal distortion. However, its remarkable drawback is the high computational complexity. In order to reduce the computational complexity, currently many PTS methods have been proposed but with the cost of the loss of PAPR performance of the system. In this paper, we introduce an improved PTS optimization method with superimposed training. Simulation results show that, compared with conventional PTS, improved PTS scheme can achieve better PAPR performance while be implemented with lower computation complexity of the system.

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Sub-optimum PTS for PAPR reduction of OFDM signals

Cited by 31 publications

References 5 publications

Performance of PTS techniques with varied partition size in PAPR reduction of OFDM system

Performance of PTS techniques with varied partition size in PAPR reduction of OFDM system

Computational Complexity Reduction of OFDM Signals by PTS with Alternate Optimized Recursive Phase Weighting (AO-RPW) Method

A PTS Optimization Scheme with Superimposed Training for PAPR Reduction in OFDM System

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