Using evolutionary computation technique for trade-off between performance peak-to average power ration reduction and computational complexity in OFDM systems

Hung, Ho-Lung

doi:10.1016/j.compeleceng.2010.08.002

Cited by 24 publications

(14 citation statements)

References 21 publications

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“…The invalidity of this signal means PAPR, and by separation from the extreme power, the average signal strength is generated. PAPR is generally associated with decibels (dB) [33], [34].…”

Section: Ofdm Systemmentioning

confidence: 99%

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A Hybrid Segmentation Pattern of Partial Transmission in Computer Networks to Reduce the Complexity Level

Hameed

Ahmed

Mahmood

2020

IJIE

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Partial transmission sequence (PTS) is seen as a related project in the framework of the Orthogonal Frequency Division ‎Multiplexing (OFDM) to suppress the medium to high Peak-to-Average Power Ratio problem. The PTS chart data is based on dividing the back into subdivisions and their weight by combining step-by-step factors. Despite the fact that PTS can reduce the high specifications. The Computational Complexity Level (CC) limits the scope of application to match PTS use with ground applications. In PTS, there are three main distribution schemes. Interleaving projects (IL-PTS), arbitrary and alternate (PR-PTS) and Ad-PTS. In this paper, another algorithm called the Hybrid Pseudo-Random and Interleaving Cosine Wave Shape ‎‎(H-PRC-PTS) is presented and the PR-PTS equilibrium is established by stabilizing the cousin waveform between languages (S-IL-C- PTS), which was suggested in the previous work. The results showed that the proposed algorithm could reduce the validity of PAPR as a PR-PTS scheme, although the CC level was significantly reduced.

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“…The invalidity of this signal means PAPR, and by separation from the extreme power, the average signal strength is generated. PAPR is generally associated with decibels (dB) [33], [34].…”

Section: Ofdm Systemmentioning

confidence: 99%

“…Moreover, due to the possibility of signal transmission outside the PMR due to high PAPR, some parts of the frame, such as HPA are transferred directly to the non-linear area. After that, the superiority of the signals will change, and this indicates degradation in efficiency and withdrawal from the BER implementation [33].…”

Section: Ofdm Systemmentioning

confidence: 99%

A Hybrid Segmentation Pattern of Partial Transmission in Computer Networks to Reduce the Complexity Level

Hameed

Ahmed

Mahmood

2020

IJIE

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“…This method provides the same performance as the SLM method but is more complex. The complexity of this method has been reduced in select studies but always requires sacrifices in the BER performance or other areas.…”

Section: Introduction and Related Workmentioning

confidence: 99%

Reducing the power envelope fluctuation of OFDM systems using side information supported amplitude clipping approach

Taher

Mandeep

Ismail

et al. 2013

Circuit Theory & Apps

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OFDM is an important modulation technique currently in development in the field of communications systems. OFDM signals can combat multipath propagation and fading channels and can support large data rates. However, OFDM systems are multicarrier systems and experience problems due to the required summation of sinusoids when the in‐phase subcarriers are combined, which produces high power peaks. The large power envelope fluctuations that occur at the output cause in‐band and out‐of‐band distortions that result in degraded BER performance. The literature contains many qualified approaches to resolving the peak‐to‐average power ratio problem, including selected mapping, partial transmit sequence, and amplitude clipping techniques. The simplest technique is the amplitude clipping technique, and the selected mapping and partial transmit sequence techniques are excessively complicated for real‐time implementation. In this paper, we suggest a modification to the amplitude clipping method to produce a novel clipping technique called the side information supported amplitude clipping (SI‐SAC) method. The SI‐SAC technique involves sending certain bits of extra information so that the receiver can recover all of the clipped data. The SI‐SAC technique does not add computational complexity to the system, and simulation results show that the proposed method is superior to the conventional method. The peak‐to‐average power ratio was reduced by ≈2.5 dB, and the magnitude of the mean squared error vector is the same as that of the original signal that is not clipped. In contrast, the conventional amplitude clipping method produces a mean squared error vector with a large magnitude. Copyright © 2012 John Wiley & Sons, Ltd.

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“…In recent years, much attention has been devoted to meta-heuristics, new techniques emerging from the field of artificial intelligence: fuzzy inference system [19], genetic algorithm (GA) [20,21], particle swarm optimization (PSO) [22][23][24], simulated annealing [24], ant colony optimization [25], artificial neural network [26], electromagnetism-like method (EM) [27][28][29][30], and so on. These meta-heuristics can be regarded as problem-independent approaches well suited to solve complex problems difficult to solve by traditional techniques.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetism‐like method tuned constant modulus algorithm for blind detector in multicarrier CDMA system

Hung

2012

Int J Communication

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SUMMARYThis paper presents an efficient meta‐heuristic algorithm based on electromagnetism‐like method, which has been successfully implemented in multiuser detection problems. The contribution revisits blind multiuser detection for multicarrier code division multiple access systems using a novel combined adaptive step‐size constant modulus algorithm (CMA) and electromagnetism‐like method scheme. To work around potentially computational intractability and improved the capability of suppressing multiple access interference (MAI) for Multicarrier CDMA System, the proposed scheme exploits heuristics in consideration of both global and local exploration of the step size of the CMA. Simulation results obtained confirm that faster convergence and desirable BER performance with low computational complexity can be achieved with electromagnetism‐like method based CMA scheme, compared with the previous step‐size CMA scheme, genetic algorithm, and particle swarm optimization with CMA scheme. Copyright © 2012 John Wiley & Sons, Ltd.

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Using evolutionary computation technique for trade-off between performance peak-to average power ration reduction and computational complexity in OFDM systems

Cited by 24 publications

References 21 publications

A Hybrid Segmentation Pattern of Partial Transmission in Computer Networks to Reduce the Complexity Level

A Hybrid Segmentation Pattern of Partial Transmission in Computer Networks to Reduce the Complexity Level

Reducing the power envelope fluctuation of OFDM systems using side information supported amplitude clipping approach

Electromagnetism‐like method tuned constant modulus algorithm for blind detector in multicarrier CDMA system

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