Proceedings ArticleDOI
An Analysis of OFDM Peak Power Reduction Techniques for WiMAX Systems
Cristina Ciochina,Fabien Buda,Hikmet Sari +2 more
- Vol. 10, pp 4676-4681
TLDR
The effectiveness of some recently proposed PAPR reduction methods for WiMAX systems using typical HPA models and spectral masks is evaluated in terms of the total system degradation.Abstract:
The main drawback of Orthogonal Frequency Division Multiplexing (OFDM) systems is the high peak-to-average power ratio (PAPR), which significantly reduces the efficiency of the transmit high power amplifier (H PA). Several methods have been proposed in the literature to reduce the peak power of OFDM signals and substantial gains were reported. In this paper, the effectiveness of some recently proposed methods is evaluated for WiMAX systems. Using typical HPA models and spectral masks, these PAPR reduction methods are evaluated in terms of the total system degradation.read more
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References
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Journal ArticleDOI
OFDM with reduced peak-to-average power ratio by optimum combination of partial transmit sequences
Stefan Müller,Johannes B. Huber +1 more
TL;DR: In this paper, the authors proposed a very effective and flexible peak power reduction scheme for orthogonal frequency division multiplexing (OFDM) with almost vanishing redundancy, which works with arbitrary numbers of subcarriers and unconstrained signal sets.
Journal ArticleDOI
PAR reduction in OFDM via active constellation extension
TL;DR: A new PAR-reduction method is presented that dynamically extends outer constellation points in active (data-carrying) channels, within margin-preserving constraints, in order to minimize the peak magnitude of an OFDM transmit block.
Effects of HPA-Nonlinearity on a 4-DPSK/OFDM-Signal for a Digital Sound Broadcasting System.
TL;DR: In this paper, the influence of the nonlinear distortions introduced by the high power amplifier (HPA) of the transmitter is examined, and the degradation in power efficiency due to intermodulation effects and backoff operating, as well as spectral degradations are investigated.
Journal ArticleDOI
SLM peak-power reduction without explicit side information
TL;DR: An extension of SLM is proposed, which employs scrambling and refrains from the use of explicit side information in the receiver, and focuses on orthogonal frequency-division multiplexing (OFDM) in this letter.
Journal ArticleDOI
Generalised Reed-Muller codes and power control in OFDM modulation
TL;DR: A powerful theory linking Golay complementary sets of polyphase sequences and Reed-Muller codes is developed and shows that any second-order coset of a q-ary generalization of the first order Reed-muller code can be partitioned into Golay additive sets whose size depends only on a single parameter that is easily computed from a graph associated with the coset.
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