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Papr reduction using iterative companding transforms technique on turbo code based mimo ofdm system for better performance
2016
International Journal of Latest Trends in Engineering and Technology
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for such situation when complexity becomes first considering factor and after the analyzed a clipping and filtering method to reduce PAPR in OFDM system. ...
Abdul Wahab [5] propose a method for reducing of PAPR in OFDM signal .Propose method separate the frequency of sub-carrier to halved as compared to the conventional OFDM such that its resultant simulation ...
doi:10.21172/1.81.006
fatcat:nigawlrebvhvhi7djoozswarly
PAPR Reduction in Universal Filtered Multicarrier Systems with Companding Transform
2020
2020 Third International Conference on Advances in Electronics, Computers and Communications (ICAECC)
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In this paper, a linear nonsymmetrical companding transform (LNST), which reduces PAPR of UFMC signals without changing the average power of the companded signal, is proposed. ...
Companding techniques are simple and proficient to reduce the PAPR of UFMC signals. ...
The comparison of BER characteristics of LNST companding with original UFMC signal for different orders of QAM are exemplified in Fig 8. ...
doi:10.1109/icaecc50550.2020.9339487
fatcat:yz5smmdw6zcdtmwthvbnfdjjsu
ADVANCED APPROACH FOR REDUCING PAPR IN OFDM SYSTEMS TO MINIMIZE INTERFERENCE EFFECT
2015
International Journal of Research in Engineering and Technology
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This PAPR effect is tried to be reduced using a combined technique which makes use of clipping and filtering technique along with companding technique. ...
But the OFDM system faces the problem of PAPR i.e. Peak to Average Power Ratio. ...
COMPANDING TECHNIQUE The term companding is formed by the use of two words i.e. compression and expansion. So companding is a reduction technique used for reducing the PAPR effect in OFDM signals. ...
doi:10.15623/ijret.2015.0408079
fatcat:epdpn7z2lraizkytrlucjoxcmu
Universal Filtered Multi-Carrier Peak to Average Power Ratio Reduction
2019
Journal of Communications
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In this paper a clipping and companding combined scheme is used, leading to significant performance improvement as a function of PAPR compared to the clipping and Companding techniques applied separately ...
In order to reduce the PAPR, many PAPR reduction techniques were proposed over the last few decades. ...
For NERF companding, PAPR was improved from 5.3dB using companding, to 4.1dB in CC-UFMC, while μ-law companding had a PAPR of 3.5dB, which reduced to 2.4 dB when applying CC-UFMC. ...
doi:10.12720/jcm.14.3.243-248
fatcat:qzvm5jhzavfannx4qeylr2p7ru
Adaptive Companding as a PAPR Reduction Technique of an OFDM Signal
2012
Journal of Communications
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In this paper, a new adaptive PAPR reduction scheme is proposed by which the PAPR of the OFDM signal can be reduced to keep the value lower than a predefined threshold level. ...
A conventional companding is used as a technique to reduce the PAPR of the OFDM signal. ...
The result in Fig. 6 is showing the performances of PAPR of an OFDM signal without companding, using conventional companding scheme, double companding scheme and adaptive companding scheme with level ...
doi:10.4304/jcm.7.11.803-807
fatcat:eb467p3oubdlfdeqmqiufsdenm
New Efficient PAPR Reduction Schemes in LTE OFDM Systems
2019
Signals and Telecommunication
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The new scheme lessens the signal distortion caused by AEC companding and gives a great improvement in both PAPR & BER performance in comparison with AEC in both LTE SISO-OFDM and LTE MIMO-OFDM systems ...
+ Mu-law companding for LTE SISO-OFDM system. ...
The AEC scheme with best result reduces the PAPR to 1.6dB at the expense of worst increase in SNR to 5.9dB at A = 100. ...
doi:10.6025/stj/2019/8/2/39-53
fatcat:xruyepjv55cshdgp2tnjd4mjpu
Analytical Approach for PAPR Reduction and Mitigating Companding Distortion Using Piecewise Linear Companding
2016
International Journal Of Engineering And Computer Science
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The simulation results show that a reduced PAPR and optimal BER rate of the OFDM system. ...
In the OFDM communication system the main disadvantage factor is Peak Average to Power Ratio (PAPR) which limits the performance of the overall system. ...
In another work Wang et al. proposed a scheme based on μ-law companding to reduce the PAPR of OFDM signal. ...
doi:10.18535/ijecs/v4i10.36
fatcat:pu3yedkj7ffmjj6h43lpqxup4u
Performance Analysis of FBMC/O-QAM System using Peak to Average Power Ratio
2019
International Journal for Research in Applied Science and Engineering Technology
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High PAPR reduces the power efficiency of the system and it needs to be addressed. ...
Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/O-QAM) is an alternate transmission method where a dedicated filter is applied on each subcarrier, that reduces the OOB (Out Of ...
Companding action improves the average power of the signal and reduces the peak power of the signal hence PAPR reduces. ...
doi:10.22214/ijraset.2019.7189
fatcat:me3bk4f3avbh5bue2ts3oq5f5q
On Optimizing the PAPR of OFDM Signals with Coding, Companding, and MIMO
2019
IEEE Access
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The results for the hybrid PAPR reduction technique show that this scheme significantly reduces the PAPR compared with SS-CARI alone; it can improve the bit error rate to levels better than what obtains ...
number of subblocks for SS-CARI, and the companding parameters. ...
reduce the PAPR in the OFDM signal. ...
doi:10.1109/access.2019.2899965
fatcat:ij5ubgqd6jgidjrhmoaczk4igq
Peak-to-Average Power Ratio Reduction Techniques for OFDM Signals
2014
International Journal of Computer Applications
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One of the major limitations of OFDM is that it suffers from high peak-to-average power ratio (PAPR), which results in inter-carrier interference (ICI), high out-ofband radiation, and degradation of bit ...
In this paper, different OFDM PAPR reduction techniques are reviewed and analyzed based on their computational complexity, bandwidth requirement and error performance. ...
In μ-law companding, the peak value of the OFDM signal remains unchanged, but the average power of the OFDM signal after companding is increased and hence the PAPR is reduced [6] . ...
doi:10.5120/16929-7040
fatcat:pwdh3uhx3fa2rdd4jgghurhaoy
Performance Analysis of Hybrid Peak to Average Power Ratio Reduction Techniques in 5G UFMC Systems
2019
IEEE Access
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The proposed hybrid scheme consists of a combination of precoding and nonlinear companding techniques (NLCTs). ...
Therefore, this paper puts forward an effective hybrid PAPR reduction method to reduce the high PAPR of the UFMC system. ...
Fig. 4 shows the CCDF comparison of different precoding schemes used to reduce the PAPR in a UFMC system for different modulation orders. ...
doi:10.1109/access.2019.2916937
fatcat:qb2mc2fvczgsvfov7bl4b5ygvy
A Novel Approach For Papr Reduction And Mitigating The Companding Distortion By Using Piece Wise Linear Companding Framework
2016
International Journal Of Engineering And Computer Science
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The simulation results show that a reduced PAPR and optimal BER rate of the OFDM system. ...
In the OFDM communication system the main disadvantage factor is Peak Average to Power Ratio (PAPR) which limits the performance of the overall system. ...
In another work Wang et al. proposed a scheme based on μ-law companding to reduce the PAPR of OFDM signal. ...
doi:10.18535/ijecs/v4i10.31
fatcat:6lp3cul3trgjfebtpi5km4mzt4
Papr Reduction And Companding Distortion Mitigation By Piecewise Linear Companding
2016
International Journal Of Engineering And Computer Science
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The simulation results show that a reduced PAPR and optimal BER rate of the OFDM system. ...
In the OFDM communication system the main disadvantage factor is Peak Average to Power Ratio (PAPR) which limits the performance of the overall system. ...
Companding Companding is another popular distortion based scheme for PAPR reduction in OFDM system. ...
doi:10.18535/ijecs/v4i12.19
fatcat:a4lfqtz6mrbovfmlfch6qimiry
A Comparison of ICF and Companding for Impulsive Noise Mitigation in Powerline Communication Systems
2017
Proceedings of the International Conference on Future Networks and Distributed Systems - ICFNDS '17
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In this study, we apply Iterative Clipping and Filtering (ICF) and companding schemes which are Peak-to-Average Power Ratio (PAPR) reduction techniques to enable symmetric amplitude distribution of the ...
With an optimization search for the optimal blanking amplitude for the two PAPR reduction schemes. ...
In this study, we evaluate the performance merits of iterative clipping and filtering (ICF) and companding PAPR reduction schemes for reducing the impact of impulsive noise. ...
doi:10.1145/3102304.3109815
dblp:conf/icfnds/AnohAH17
fatcat:kmvnccu3ardldkrvwskk456za4
Root-Based Nonlinear Companding Technique for Reducing PAPR of Precoded OFDM Signals
2018
IEEE Access
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We exemplify these by imposing this constraint on standard µ-law companding (MC) technique in reducing PAPR of OFDM signals, which is known to expand the amplitudes of low power signals only without impacting ...
While preserving the BER, DHT-precoded RMC outperforms all the four other companding schemes (MC, EC, HASC, LMC) in terms of PAPR. ...
FIGURE 1 . 1 System model for precoded OFDM system with companding and decompanding for reducing the PAPR of OFDM signals. ...
doi:10.1109/access.2017.2779448
fatcat:qp4uyoltjvfqdhyyohffzlkbx4
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