Adaptive ABC Algorithm Based PTS Scheme for PAPR Reduction in MIMO-OFDM

Maddala, Vijayalakshmi; Reddy, Katta Rama Linga

doi:10.22266/ijies2017.0430.06

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…This method selects the ideal stage factor price through a flexible ABC optimization process. At the point when applied to MIMO-OFDM systems with various phase factors, this method can reduce the complexity of computing for larger PTS subblocks and offer lower PAPR [15]. The weakness of Maddala's research is that this technique is applied in the orthogonal MIMO OFDM system which is not yet in the non-orthogonal waveform system.…”

Section: Literature Reviewmentioning

confidence: 99%

Partial Transmit Sequence and Selected Mapping Schemes for PAPR Reduction in GFDM Systems

Jayati¹,

Wirawan²,

Suryani³

et al. 2019

IJIES

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Generalized Frequency Division Multiplexing (GFDM) is one of the 5G candidates to overcome the shortcomings of Orthogonal Frequency Division Multiplexing (OFDM), high peak rating power ratio (PAPR), and high Out of Band (OOB) radiation. GFDM has a low PAPR due to the use of a number of subcarriers. The purpose of this paper is to compare the two algorithms to reduce PAPR if applied to the non-linear distortion-affected GFDM system. Partial Transmit Sequence (PTS) and Selected Mapping (SLM) are selected because these techniques do not distort the signal, so they do not change the spectrum of the signal. The simulation result shows PAPR GFDM is not significantly affected by nonlinear distortion. After being given the PTS technique, the PAPR value on GFDM dropped to 5 dB. Meanwhile, after being given a selective mapping technique, the PAPR value in GFDM dropped to 6.2 dB.. However, for a 5G application with thousands of devices, this value should still be reduced. After being given a PTS, the PAPR value drops to the value according to the 5G criterion. Better PTS performance decreases PAPR for GFDM systems that are given nonlinear distortion when compared to SLM.

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Section: Literature Reviewmentioning

confidence: 99%

Partial Transmit Sequence and Selected Mapping Schemes for PAPR Reduction in GFDM Systems

Jayati¹,

Wirawan²,

Suryani³

et al. 2019

IJIES

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show abstract

“…The O-OFDM produces real positive values that differ from OFDM used in RF systems that deal with complex bipolar signals [10]. Many O-OFDM types are proposed depending on generating non-negative values, and Hermitian symmetry is used to convert complex values to real [10][11][12]. In DC Biased Optical OFDM (DCO-OFDM), the DC bias values are added to the generating OFDM signals to produce positive symbols [13].…”

Section: Introductionmentioning

confidence: 99%

“…The simulation considers the LED nonlinearity for LOS and NLOS channels. The Rapps model is used for modeling the output current (I) to input Voltage (V) characteristic of LED, which describes the LED non-linearity [12][13][14][15]. The BER enhancement for VLC systems is proposed using a conVolutional encoder at the transmitter and the Vetribi decoder at the receiver.…”

Section: Introductionmentioning

confidence: 99%

BER Comparison and Enhancement of Different Optical OFDM for VLC

Hameed¹,

Abdulsatar²,

Sabri³

2021

IJIES

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Visible Light Communication (VLC) becomes a promising technology in the Optical Wireless Communication OWC field. VLC has been developed based on Optical Orthogonal Frequency Division Multiplexing (O-OFDM) in recent years. The Bit Error Rate (BER) performance for various O-OFDM is studied in this paper. The non-linearity characteristic of Light-Emitting Diode (LED), modulation constellation size, O-OFDM scheme, and channel types impacts the BER performance of VLC systems significantly. The proposed model utilizes the conVolutional encoder of 2/3 rate and seven memory cells in the transmitter with O-OFDM for BER enhancement.At the receiver, the Viterbi algorithm system is employed with hard or soft-decision decoding. The proposed system is evaluated in Line-of-Sight and Non-Line-of-Sight (NLOS) channels. In the NLOS model, Zero Forcing Equalizer (ZFE) with channel estimation is added at the receiver path for equalizing the multipath diffused components. This study proves the capability of the proposed system in mitigating the LED non-linearity and reducing BER. The simulation results show the Signal-to-Noise Ratio (SNR) enhancement of the exanimated O-OFDM-based softdecision between 7 to 10 dB for the BER 10-5 in the LOS model, and for the NLOS model, the BER can be improved from 0.02 up to 10-5 at SNR 45dB.

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Application of Artificial Bee Colony Algorithm for Model Parameter Identification

Roeva

2017

Innovative Computing, Optimization and Its Applications

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Adaptive ABC Algorithm Based PTS Scheme for PAPR Reduction in MIMO-OFDM

Cited by 5 publications

References 16 publications

Partial Transmit Sequence and Selected Mapping Schemes for PAPR Reduction in GFDM Systems

Partial Transmit Sequence and Selected Mapping Schemes for PAPR Reduction in GFDM Systems

BER Comparison and Enhancement of Different Optical OFDM for VLC

Application of Artificial Bee Colony Algorithm for Model Parameter Identification

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