An Overview: Peak-to-Average Power Ratio Reduction Techniques for OFDM Signals

Jiang, Tao; Wu, Yiyan

doi:10.1109/tbc.2008.915770

Cited by 1,262 publications

(722 citation statements)

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“…The selected OFDM signal is indicated as x (˜u) (k). In SLM for generation of alternative OFDM symbols the independent phase vectors has to generated B (u) (k) is the k th value of u th phase vector and it is given by (5) Where ϕ(k) or ϕ (u) (k) indicates the random phase value. The condition of mutual independence between b (m) (n) and b (l) (n) is (6) ϕ must be uniformly distributed in [0, 2π) to satisfy the above condition [7].…”

Section: A Selective Mapping (Slm) Techniquementioning

confidence: 99%

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PAPR Reduction Analysis of OFDM signals in DVB-T system using SLM and PTS techniques

Pasha¹

2017

IJRASET

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DVB-T uses very popular multicarrier modulation system such as OFDM and the OFDM signals in DVB-T has highPeak to Average Power Ratio (PAPR). One way to reduce the high PAPR is by using efficient techniques. In this research, we analyse the PAPR reduction of OFDM signals using SLM and PTS techniques. The input considered for DVB-T system is video signal taken from internet. The simulations of these techniques are carried out using MATLAB. Keywords: OFDM, DVB-T, SLM, PTS, QAM, PAPR, Techniques I. INTRODUCTION Digital terrestrial television (DTT) is also called as Digital Video Broadcasting-Terrestrial (DVB-T) television is currently an efficient communication technology for broadcasting television (TV) signals[1]. The European digital television ETSI EN 300 744, standard is DVB-T, for the terrestrial transmission to fixed, portable, and mobile receivers [2]. The specification of framing structure, channel coding and modulation, for digital terrestrial broadcasting is provided by DVB-T Standard. DVB-T system refers, to the source coding of data, audio signals and video signals, the channel coding and the technique for the transport of the DVB-T signals by means of all type of transmission media. In DVB-T, the OFDM is used to transmit 2k and 8k mode carriers over AWGN, Rician and Rayleigh Channel, the received signal at the receiver is corrupted. The corrupted received signal is manipulated in terms of SNR values (ranging from 0db to 16dB) and modulation techniques (4-QAM, 16-QAM 64-QAM and 128-QAM). OFDM modulation [3] is attractive technique for high data rate transmission, since it can cope with frequency selective fading channel. The Fig.1 gives the DVB-T System Physical Layer block diagram. In DVB-T the most serious problem of OFDM is high Peak to average power ratio (PAPR) which causes degradation of system performance. So reduction of PAPR is very much needed in order to utilize the benefits of OFDM for DVB-T applications. Various PAPR reduction techniques are proposed in literature for OFDM system and in this research we have considered the most widely used techniques such SLM and PTS [4] [5].

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Section: A Selective Mapping (Slm) Techniquementioning

confidence: 99%

“…So reduction of PAPR is very much needed in order to utilize the benefits of OFDM for DVB-T applications. Various PAPR reduction techniques are proposed in literature for OFDM system and in this research we have considered the most widely used techniques such SLM and PTS [4] [5]. …”

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confidence: 99%

PAPR Reduction Analysis of OFDM signals in DVB-T system using SLM and PTS techniques

Pasha¹

2017

IJRASET

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“…Many PAPR reduction techniques are proposed in the literature [2] [3] to reduce the PAPR of the OFDM signal. The PAPR reduction schemes are majorly divided into two categories a) Distortion based Techniques b)…”

Section: Related Workmentioning

confidence: 99%

“…These techniques are the most straightforward PAPR reduction methods. The clipping [2] is one of the simplest distortion based technique to reduce the PAPR of OFDM signal. It reduces the peak of the OFDM signal by clipping the signal to the desired level but it introduces both in-band distortion and out-of-band radiation.…”

Section: Related Workmentioning

confidence: 99%

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Review on PAPR Reduction in OFDM based system

Narula¹

2015

IJIRSET

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ABSTRACT:In recent time, the demand for multimedia data services has grown up rapidly. One of the most promising multi-carrier system, Orthogonal Frequency Division Multiplexing (OFDM) forms basis for all 4G wireless communication systems due to its large capacity to allow the number of subcarriers, high data rate and ubiquitous coverage with high mobility. OFDM is significantly affected by peak-to-average-power ratio (PAPR). Unfortunately, the high PAPR inherent to OFDM signal envelopes will occasionally drive high power amplifiers (HPAs) to operate in the nonlinear region of their characteristic curve. The nonlinearity of the HPA exhibits amplitude and phase distortions, which cause loss of orthogonality among the subcarriers, and hence, inter-carrier interference (ICI) is introduced in the transmitted signal. Not only that, high PAPR also leads to in-band distortion and out-of-band radiation. Different techniques are used to reduce the Peak to Average Power Ratio (PAPR) to increase the efficiency of the OFDM system. In this paper some of these important techniques are reviewed.

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Cognitive Radio Communications and Networking

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An Overview: Peak-to-Average Power Ratio Reduction Techniques for OFDM Signals

Cited by 1,262 publications

References 70 publications

PAPR Reduction Analysis of OFDM signals in DVB-T system using SLM and PTS techniques

PAPR Reduction Analysis of OFDM signals in DVB-T system using SLM and PTS techniques

Review on PAPR Reduction in OFDM based system

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