SLM peak-power reduction without explicit side information

Breiling, Marco; Muller-Weinfurtner, S.H.; Huber, Johannes B.

doi:10.1109/4234.929598

Cited by 382 publications

(199 citation statements)

References 4 publications

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“…Complex modulation schemes, like Wideband Code Division Multiple Access (W-CDMA), and Orthogonal Frequency Division Multiplexing (OFDM) are considered to be promising solutions to meet the expected requirements. Unfortunately, such signals are characterized by highly varying envelope [2][3][4], resulting in very high Peak to Average Power Ratio (PAPR). Therefore, such coding approaches are creating bigger challenges for Power Amplifiers (PAs) designers, who have either to conceive new PA configurations or to resurrect and optimize old PA architectures to set up novel ways to maximize the efficiency-linearity trade-off of the transmitters [5].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Power Efficiency of Doherty Power Amplifiers Using Windowing Based Crest Factor Reduction Technique

Vikraman¹,

Giofrè²,

Colantonio³

2016

PIER C

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Abstract-This paper investigates the performance of a Windowing Based Crest Factor Reduction (CF R W B ) technique, to enhance the power efficiency of Radio Frequency (RF) power amplifiers. In particular, CF R W B is implemented on a Doherty Power Amplifier (DP A) in conjunction with Generalized Memory Polynomial (GM P DP D ), and Volterra series based Digital Predistortion (V DP D ) techniques. Key features like spectral regrowth, Peak to Average Power Ratio (P AP R) reduction, efficiency improvement and Error Vector Magnitude (EV M ) have been used to measure the efficacy of the proposed method. Both simulation and experimental results show that the proposed combination of CF R W B technique with GM P DP D and V DP D is able to reduce the P AP R of the complex input signals by nearly 60%, with minimal degrading of the EV M and spectral regrowth. Moreover, such signal with reduced P AP R can be used to overdrive the DPA, allowing for a relevant average efficiency enhancement (i.e., up to 25%), while fulfilling the requirements of modern communication standards such as Wideband Code Division Multiple Access (W CDM A) and long-term evolution (LT E).

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Section: Introductionmentioning

confidence: 99%

Enhancing Power Efficiency of Doherty Power Amplifiers Using Windowing Based Crest Factor Reduction Technique

Vikraman¹,

Giofrè²,

Colantonio³

2016

PIER C

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“…In [14] many SI embedding schemes have been proposed for SLM-OFDM system. These schemes [13] embed SI in the OFDM signal without using any extra bit.…”

Section: Related Workmentioning

confidence: 99%

Review on PAPR Reduction in OFDM based system

Narula¹

2015

IJIRSET

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ABSTRACT:In recent time, the demand for multimedia data services has grown up rapidly. One of the most promising multi-carrier system, Orthogonal Frequency Division Multiplexing (OFDM) forms basis for all 4G wireless communication systems due to its large capacity to allow the number of subcarriers, high data rate and ubiquitous coverage with high mobility. OFDM is significantly affected by peak-to-average-power ratio (PAPR). Unfortunately, the high PAPR inherent to OFDM signal envelopes will occasionally drive high power amplifiers (HPAs) to operate in the nonlinear region of their characteristic curve. The nonlinearity of the HPA exhibits amplitude and phase distortions, which cause loss of orthogonality among the subcarriers, and hence, inter-carrier interference (ICI) is introduced in the transmitted signal. Not only that, high PAPR also leads to in-band distortion and out-of-band radiation. Different techniques are used to reduce the Peak to Average Power Ratio (PAPR) to increase the efficiency of the OFDM system. In this paper some of these important techniques are reviewed.

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“…One of the major drawbacks in OFDM is its high peak-to-average power ratio (PAPR) which causes nonlinear distortion at the output of power amplifier. To reduce PAPR of OFDM signals, several approaches have been presented such as clipping-andfiltering (C&F) and subcarrier-phase-control [2,3,4,5]. C&F is a simple technique.…”

Section: Introductionmentioning

confidence: 99%

“…However, the receiver needs to recover the original information from the received randomized sequence, e.g., by sending redundant side information to the receiver. As a method to recover the original data without explicit side information, a self-synchronized-scramblerbased SLM (SS-SLM) has been proposed [5], where the transmit data sequence is randomized using a self-synchronized-scrambler. In this method, the receiver needs to use the corresponding descrambler to recover the original data from the received scrambled sequence.…”

Section: Introductionmentioning

confidence: 99%

Partial scrambling selected mapping for PAPR reduction of OFDM signals

2017

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To reduce peak-to-average-power ratio (PAPR) of OFDM signals, a self-synchronized-scrambler-based selected-mapping (SS-SLM) has been investigated, where the transmit sequence is scrambled to reduce PAPR. In this method, the receiver needs to use descrambler to recover the original data. However, the descrambling causes error propagation which degrades bit error rate (BER). In this paper, we propose a partially self-synchronizedscrambler-based selected-mapping (PSS-SLM) which scrambles only most significant bits allocated to I-phase and Q-phase of QAM symbols. Numerical results show that the proposed PSS-SLM achieves better BER than that of SS-SLM in QAM-OFDM systems while keeping the same PAPR reduction capability as SS-SLM. , vol. 15, no. 4, pp. 1567-1592, 2013. DOI:10.1109/SURV.2013 J. Armstrong, "Peak-to-average power reduction for OFDM by repeated clipping and frequency domain filtering," Electron. Lett., vol. 38, no. 5, pp. 246-247, Feb. 2002. DOI:10.1049 R. W. Bäuml, R. F. H. Fischer, and J. B. Huber, "Reducing the peak-to-average power ratio of multicarrier modulation by selected mapping," Electron. Lett.,

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SLM peak-power reduction without explicit side information

Cited by 382 publications

References 4 publications

Enhancing Power Efficiency of Doherty Power Amplifiers Using Windowing Based Crest Factor Reduction Technique

Enhancing Power Efficiency of Doherty Power Amplifiers Using Windowing Based Crest Factor Reduction Technique

Review on PAPR Reduction in OFDM based system

Partial scrambling selected mapping for PAPR reduction of OFDM signals

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