PAPR Reduction in OFDM Systems: Polynomial-Based Compressing and Iterative Expanding

Omidi, Mohammad Javad; Minasian, Arin; Saeedi-Sourck, Hamid; Kasiri, Keyvan; Hosseini, Iraj

doi:10.1007/s11277-013-1350-2

Cited by 8 publications

(9 citation statements)

References 26 publications

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“…The first group includes distortion-less techniques which are applied before the multicarrier modulation. However, such techniques suffer from a number of weaknesses such as high computational complexity, overhead due to side information, restrictions on system parameters and rate reduction, [15]. The second group is comprised of signal distortion methods that put a transformation on the signal after multicarrier modulation.…”

Section: Papr Problemmentioning

confidence: 99%

“…Companding is one of the effective signal distortion methods with low complexity and no bandwidth expansion. PCT, which is of interest to this paper, is a type of companding techniques which aims at decreasing the computational complexity and BER performance loss at the same time, [15].…”

Section: Papr Problemmentioning

confidence: 99%

“…. + a 5 x 5 + a 3 x 3 + a 1 x, (7) where the coefficients of the polynomial, a i s, can be adapted by a variable change in the Daubechies wavelets [15]. The general form of the obtained compressor function can be obtained as…”

Section: A Compressor At the Transmittermentioning

confidence: 99%

“…To address the PAPR problem, in this paper, we extend the "polynomial-based companding technique" (PCT) that was previously proposed in [15] for OFDM to GFDM. The challenge in this paper is to modify PCT in a way to make it applicable to GFDM.…”

Section: Introductionmentioning

confidence: 99%

“…This leads to a small increase in required signal to noise ratio (SNR) to reach at a given bit error rate (BER) in the expanding operation compared with other companding methods. In [15], expanding is combined with the fast fourier transform (FFT) block and hence is considered as a part of demodulation procedure. Accordingly, it is not straightforwardly applicable to GFDM or other multicarrier techniques.…”

Section: Introductionmentioning

confidence: 99%

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Polynomial-based compressing and iterative expanding for PAPR reduction in GFDM

Sharifian

Omidi

Farhang

et al. 2015

2015 23rd Iranian Conference on Electrical Engineering

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GFDM (generalized frequency division multiplexing) is a non-orthogonal waveform that is being discussed as a candidate for the fifth generation of wireless communication systems (5G). GFDM is a multicarrier technique with circular pulse shaping that is designed in a way to address emerging applications in 5G networks such as Internet of Things (IoT) and machine-to-machine communications (M2M). The same as other multicarrier systems, GFDM suffers from a high peak to average power ratio (PAPR). To attack PAPR problem, in this paper, we propose a polynomial based companding method with iterative expansion that is called polynomial-based companding technique (PCT). Based on our simulation results, a great amount of PAPR reduction can be achieved through utilization of our proposed technique. Through simulations, we have also investigated the bit error rate (BER) performance of the system while adopting our PCT method. Our simulations reveal that there is a tradeoff between PAPR reduction and BER performance.

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Section: Papr Problemmentioning

confidence: 99%

Section: Papr Problemmentioning

confidence: 99%

Section: A Compressor At the Transmittermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Polynomial-based compressing and iterative expanding for PAPR reduction in GFDM

Sharifian

Omidi

Farhang

et al. 2015

2015 23rd Iranian Conference on Electrical Engineering

Self Cite

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PAPR Reduction in MIMO-OFDM Systems: Spatial and Temporal Processing

Karimi

Beheshti

Omidi

2014

Wireless Pers Commun

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The Research on Improved Companding Transformation for Reducing PAPR in Underwater Acoustic OFDM Communication System

Qiao

2016

Discrete Dynamics in Nature and Society

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To solve the problem of the high peak-to-average power ratio (PAPR) in Orthogonal Frequency Division Multiplexing (OFDM) for the underwater acoustic communication system, the paper offers a method of reducing PAPR which combines the amplitude limiting and the improved nonlinear transformation. Traditional amplitude limiting technique can reduce PAPR in OFDM system effectively, at the cost of reducing the bit error rate (BER). However the companding transformation has far less computation complexity than SLM or PTS technologies and can improve the BER performance compared to the amplitude limiting technique simultaneously. The paper combines these two kinds of techniques, takes full use of advantages of the two method, and puts forward a low-complexity scheme choosing parameters that are more appropriate to the underwater acoustic field, with the result of improved BER performance even in lower SNR. Both simulation and experiment results show that the new method which combines clipping and companding transformation can effectively reduce the PAPR in the underwater acoustic OFDM communication system and improve the BER performance simultaneously.

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PAPR Reduction in OFDM Systems: Polynomial-Based Compressing and Iterative Expanding

Cited by 8 publications

References 26 publications

Polynomial-based compressing and iterative expanding for PAPR reduction in GFDM

Polynomial-based compressing and iterative expanding for PAPR reduction in GFDM

PAPR Reduction in MIMO-OFDM Systems: Spatial and Temporal Processing

The Research on Improved Companding Transformation for Reducing PAPR in Underwater Acoustic OFDM Communication System

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