Comparison of peak to average power reduction techniques in OFDM

Kundu, Poonam; Kaur, Prabhjot

doi:10.1109/icacci.2014.6968456

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…The proposed modified STC-Shaped scheme is investigated under AWGN and multi-path Rayleigh fading channel for BPSK modulation scheme at d =0. 19. The proposed STC scheme has been achieved improvement on the BER performance compared to the conventional OFDM and OQAM-FBMC systems.…”

Section: Resultsmentioning

confidence: 89%

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An Efficient Performance of OFDM-Shaped Symbol for 5G Green Communication Compared to FBMC

Afifi¹,

Soliman²,

Ammar³

2020

Adv. sci. technol. eng. syst. j.

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Section: Resultsmentioning

confidence: 89%

“…The disadvantage of OFDM multi-carrier systems is a higher peaks of the coherently non-constant envelopes added [19]. The OFDM signal has addition of N sub-carriers.…”

Section: Papr Efficiencymentioning

confidence: 99%

An Efficient Performance of OFDM-Shaped Symbol for 5G Green Communication Compared to FBMC

Afifi¹,

Soliman²,

Ammar³

2020

Adv. sci. technol. eng. syst. j.

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“…For both wired and wireless communications high data rate transmission, OFDM is a spectrally efficient multi-carrier modulation method. MIMO-OFDM suffers with high PAPR and many reduction techniques have been proposed [15]. By comparing these things, the proposed method which is hybrid method has been implemented to reduce PAPR.…”

Section: Discussionmentioning

confidence: 99%

Hybrid Method for PAPR Reduction in SFBC OFDM Systems

Bhavani¹,

Sravanti²

2018

CVRJST

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Orthogonal Frequency Division Multiplexing is an important technique in wireless communication systems. Multiple Input Multiple Output (MIMO)-OFDM with Space Frequency Block Code (SFBC) is a smart technique used due to its capability to support elevated data rates, large capacity and robust to multipath fading. A high peak-to-average-power ratio is one of the disadvantages of OFDM. Many PAPR Reduction techniques have been introduced like Companding and Selective mapping (SLM) techniques. In proposed method, the optimum PAPR can be achieved than above methods by a new hybrid method i.e., combining SLM and Companding techniques.

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“…The OFDM multicarrier systems limitation is the higher peaks of the added coherently non-constant envelops [24]. The OFDM signal has N subcarriers are added together.…”

Section: Papr Performancementioning

confidence: 99%

An efficient technique for out-of-band power reduction for the eliminated CP-STC-shaped system for 5G requirements

Afifi

Elbakry

Soliman

et al. 2020

IJECE

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The most dominant needs for the recent wireless mobile applications are higher bandwidth (BW) efficiency, higher energy efficiency higher quality of services (QOS). The main technique in 4G systems is OFDM but it suffers from some limitations such as large peak to average power ratio (PAPR), higher Out-of-Band (OOB) power radiation, and wasting bandwidth efficiency due to cyclic prefix (CP) extension. In his paper, these OFDM limitations will be reduced with low computational complexity compared to filter bank multicarriers (FBMC). The proposed scheme is based on symbol time compression (STC) for OFDM system. The proposed STC-Shaped system is achieved via interleaver-spreader and symbol shaper in the transmitter side in addition to equalization and combining processes in the receiver side. Comparative study between the proposed system and the conventional OFDM in case of additive white Gaussian noise (AWGN) and COST 207 typical multipath fading channel will be presented. The numerical results show that the proposed STC-Shaped scheme reduces OOB significantly. The proposed scheme improves BER in multipath Rayleigh fading although it is without CP. Thus, the proposed system is more robust against inter symbol interference (ISI) compared to conventional OFDM system. Also, the numerical results show that the PAPR of the proposed system is decreased significantly and also, it is derived theoretically. Also, the proposed scheme overcomes CP extension, and hence increases the bandwidth (BW) efficiency. Finally, the computational complexity for the proposed scheme is derived and it has very low complexity compared to FBMC. The system performance measurments has been fulfilled using cumulative distribution function (CDF), power spectral density (PSD) and bit error rate (BER).

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Comparison of peak to average power reduction techniques in OFDM

Cited by 5 publications

References 14 publications

An Efficient Performance of OFDM-Shaped Symbol for 5G Green Communication Compared to FBMC

An Efficient Performance of OFDM-Shaped Symbol for 5G Green Communication Compared to FBMC

Hybrid Method for PAPR Reduction in SFBC OFDM Systems

An efficient technique for out-of-band power reduction for the eliminated CP-STC-shaped system for 5G requirements

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