2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03).
DOI: 10.1109/icassp.2003.1202695
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PAR reduction in OFDM via active constellation extension

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Cited by 290 publications
(266 citation statements)
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“…Of late, various approaches to reduce the PAPR of OFDM have been proposed [7][8][9][10][11][12]. The conventional OFDM and SC-FDE are compared in [13] with respect to their BER performances, PAPR, carrier frequency offset, and computational complexity.…”
Section: Introductionmentioning
confidence: 99%
“…Of late, various approaches to reduce the PAPR of OFDM have been proposed [7][8][9][10][11][12]. The conventional OFDM and SC-FDE are compared in [13] with respect to their BER performances, PAPR, carrier frequency offset, and computational complexity.…”
Section: Introductionmentioning
confidence: 99%
“…By using these new degrees of freedom, multicarrier signals with arbitrarily low power peaks relative to the mean can be obtained. In [5] different algorithms to achieve PAPR reduction through ACE are provided. In this paper, the Approximate Gradient-Project (AGP) will be used since the utility of ACE is to obtain the training samples, and therefore ensuring the convergence is more important than its speed.…”
Section: System Modelmentioning
confidence: 99%
“…However, its large envelope fluctuations cause a loss in energy efficiency due to the need of power back-off for the High Power Amplifiers (HPA). Some examples of previous work dealing with this problem are [1]- [5].Within these techniques, Active Constellation Expansion (ACE) [5] has aroused great interest since it provides large envelope reductions without the need for side information, so that the data rate is not compromised. Its only weakness is its slow convergence that requires a long processing time to obtain the final signal.…”
Section: Introductionmentioning
confidence: 99%
“…To be able to handle these occasional large peaks, a high-power amplifier with linear characteristics over a large dynamic range is required. This brings disadvantages like an increased complexity of the ADC and DAC converters and a reduced efficiency of the power amplifier because the power consumption of a high-power amplifier largely depends on its peak power output rather than the average power output [3].…”
Section: Introductionmentioning
confidence: 99%