A Study of Performance Enhancement Schemes for Multicarrier Transmission

Choudhary, Chhavi; Gupta, Vishal

doi:10.5120/11579-6900

Cited by 4 publications

(4 citation statements)

References 15 publications

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“…The transmitted symbols and the subcarriers are independent; this independency allows simplifying 𝑃 𝑎𝑣 by distributing the expectation operator between the symbol's element and the sub-carrier's element of (6) as shown in (7):…”

Section: Papr In Sefdmmentioning

confidence: 99%

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Peak to average power ratio reduction in spectrally efficient FDM using repeated clipping and filtering

Oman

Majeed

Ahmad

2023

IJEECS

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Multi-carrier transmission may be considered one of the important developments in wireless communications. Spectrally efficient frequency division multiplexing (SEFDM) is a promising multi-carrier modulation which can significantly improve utilization of spectral. The SEFDM has high peak to average power ratio (PAPR) like any multicarrier system. High PAPR reduces the random forest (RF) transmitter power amplifier efficiency, which minimize the use of this technique in limited power supply transmitters. In this work, a repeated clipping and filtering method is introduced to reduce the PAPR in SEFDM with minimum or no out of band radiation. The results of the simulated approach show that the PAPR of the SEFDM was reduced from 16.264 dB to 7.9146 dB with marginal degradation in system performance when the clipping ratio varied from 4 to 2.

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Section: Papr In Sefdmmentioning

confidence: 99%

“…These methods include clipping and filtering, peak windowing, and non-linear companding. All the methods mentioned above must be applied after OFDM signal generation (after the includes a fast Fourier transform (IFFT)) [7].…”

Section: Introductionmentioning

confidence: 99%

Peak to average power ratio reduction in spectrally efficient FDM using repeated clipping and filtering

Oman

Majeed

Ahmad

2023

IJEECS

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“…E[.] is the expectation operator, the PAPR of baseband signal is nearly half to passband signal [7].…”

Section: Papr Reductionmentioning

confidence: 99%

An Approach for PAPR Reduction in OFDM System using RCF Technique

Singh¹

2022

J. Engg. Res. & Sci.

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OFDM is one of the important modulation techniques for wireless communication which is the advanced version of FDM. Now-a-days congestion networking is growing like AI, IoT, 5G etc. so there is a need of high data rate with low BER. For such a network there is requirement of high-speed secured data transmission that is multicarrier technique OFDM. This modulation technique is useful for current and future scenario. One of the major issue in OFDM is high PAPR and this is happened due to large amount of input data bits. High PAPR results in distortion in bands and power inefficiency using power amplifier. RCF is the technique used in this paper to reduce the PAPR and analyze the results with and without applying PAPR reduction technique. In this paper, after application of 4 clip and filter SNR is improved along with decrement of CCDF of PAPR which is desired.

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“…Where, is the average power of x (t) and can be computed in frequency domain because IFFT is a unitary transformation is useful duration of an OFDM symbol [5].…”

Section: Definitions Of Paprmentioning

confidence: 99%

Peak-to-Average Power Reduction using Repeated Frequency Domain Filtering and Clipping in OFDM

Hadi¹,

Omran²

2015

IJCA

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The Orthogonal Frequency Division Multiplexing is one of the widely used modulation techniques in the broadband wireless technology. One of the main problems of the OFDM is the high peak-to-average power ratio of transmitting signal due to the superposition of many subcarriers. This paper presents a new proposed peak-to-average power ratio reduction technique, which Repeated frequency domain filtering and clipping over LET channel and compare with Repeated clipping and frequency domain filtering (RCF) technique. The paper highlights the performance and advantages of the proposed technique. The simulations show that the proposed technique realizes an improved PAPR and BER.

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A Study of Performance Enhancement Schemes for Multicarrier Transmission

Cited by 4 publications

References 15 publications

Peak to average power ratio reduction in spectrally efficient FDM using repeated clipping and filtering

Peak to average power ratio reduction in spectrally efficient FDM using repeated clipping and filtering

An Approach for PAPR Reduction in OFDM System using RCF Technique

Peak-to-Average Power Reduction using Repeated Frequency Domain Filtering and Clipping in OFDM

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