PAPR Reduction in Coded SC-FDMA Systems via Introducing Few Bit Errors

Ji, Jinwei; Ren, Guangliang; Zhang, Huining

doi:10.1109/lcomm.2014.2327964

Cited by 25 publications

(24 citation statements)

References 9 publications

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“…SC-FDMA, a special case of "linearly precoded" orthogonal frequency division multiple access (OFDMA), has relatively lower peak-to-average power ratio (PAPR) than OFDMA due to the precoding [2]- [4]. However, for the localized FDMA (LFDMA) adopted by the SC-FDMA system in LTE uplink, the PAPR is still large and even larger for higher order modulations [5]- [7]. The large PAPR requires a large back off of the transmit power amplifier from its output saturation point, which leads to a very low power efficiency [8]- [10].…”

Section: Introductionmentioning

confidence: 99%

“…mapping schemes were proposed to reduce the PAPR of SC-FDMA signals with space-frequency block coding (SFBC), which is only customized for multiple transmit antennas. In [7], a flexible PAPR reduction scheme was proposed for coded SC-FDMA signals with low-complexity but a slight error floor in the bit error rate (BER). Partial transmit sequence (PTS) and selected mapping (SLM) schemes were proposed in [14]- [17].…”

Section: Introductionmentioning

confidence: 99%

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PAPR Reduction of SC-FDMA Signals Via Probabilistic Pulse Shaping

Ren

Zhang

2015

IEEE Trans. Veh. Technol.

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To avoid the excess bandwidth and noise enhancement penalty involved in the pulse shaping method for peak-toaverage power ratio (PAPR) reduction of single carrier frequency division multiple access (SC-FDMA) signals, we propose a novel alternative method, called probabilistic pulse shaping. A set of weighting windows with zero excess bandwidth is designed to weight the outputs of the discrete Fourier transform (DFT) precoder of a block of SC-FDMA symbols in a slot. Then the candidate signal blocks with different weighting windows for each block are generated with the designed low-complexity implementation scheme and the one with the lowest PAPR is selected to be transmitted. At the receiver, the received data can be detected in the same way as that of the conventional SC-FDMA using the defined equivalent channel without side information. It is shown by simulations that the proposed method achieves considerable improvements over the conventional SC-FDMA system in terms of both PAPR and bit error rate (BER) performance with low additional complexity.Index Terms-Peak-to-average power ratio (PAPR), pulse shaping, single carrier frequency division multiple access (SC-FDMA), discrete Fourier transform (DFT) precoder.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

PAPR Reduction of SC-FDMA Signals Via Probabilistic Pulse Shaping

Ren

Zhang

2015

IEEE Trans. Veh. Technol.

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“…When two successive symbols are the outer constellation points with anti-phase, the two related pulses are almost coherently added at the intersection of their main lobes so that the large peak occurs [5]. Thus, by modifying both, or one, symbols, we can break this coherent addition so that the large peak is reduced.…”

Section: System Modelmentioning

confidence: 99%

“…With the evolution from 4G to 5G, in the promising small cells where the signal-to-noise ratio (SNR) can be very high, high-order modulations are preferred to achieve higher spectral efficiencies [2]. However, high-order modulations will cause a high PAPR of SC-FDMA signals, especially localized FDMA (LFDMA) [3]- [5]. The high PAPR leads to low efficiency of the high-power amplifier (HPA) [6], which fails to meet the 5G requirements in energy efficiency [7].…”

Section: Introductionmentioning

confidence: 99%

“…These techniques work either with high complexity or excess bandwidth. Recently, Ji et al presented a PAPR reduction method (called JPRM) in [5] for coded SC-FDMA systems via introducing few error bits. However, this method only focuses on the PAPR reduction without minimization of the introduced error bits which deteriorate the error correcting capacity of the system, thus leading to a bit error rate (BER) error floor.…”

Section: Introductionmentioning

confidence: 99%

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PAPR Reduction of SC-FDMA Signals Using Optimized Additive Pre-distortion

Ren

2015

IEEE Commun. Lett.

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One challenge of employing high-order modulations in single carrier frequency division multiple access (SC-FDMA) systems is the resultant high peak-to-average power ratio (PAPR). We propose a novel PAPR reduction scheme by jointly considering the PAPR reduction and the incurred bit error rate (BER) degradation for SC-FDMA systems with high-order modulations. In the proposed scheme, an additive pre-distortion vector is introduced to modify the few modulated symbols causing the peak of the SC-FDMA signal. This pre-distortion vector is optimized to minimize the in-band distortion under the expected PAPR constraint. Simulation results demonstrate that our proposed scheme can achieve the desired PAPR reduction with negligible BER performance degradation.Index Terms-Peak-to-average power ratio (PAPR), single carrier frequency division multiple access (SC-FDMA), highorder modulation.1089-7798 (c)

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Improving the peak-to-average power ratio of single-carrier frequency division multiple access systems by using an improved constellation extension scheme with error correction

Liang

Chu

2016

Telecommun Syst

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PAPR Reduction in Coded SC-FDMA Systems via Introducing Few Bit Errors

Cited by 25 publications

References 9 publications

PAPR Reduction of SC-FDMA Signals Via Probabilistic Pulse Shaping

PAPR Reduction of SC-FDMA Signals Via Probabilistic Pulse Shaping

PAPR Reduction of SC-FDMA Signals Using Optimized Additive Pre-distortion

Improving the peak-to-average power ratio of single-carrier frequency division multiple access systems by using an improved constellation extension scheme with error correction

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