Selected Mapping Algorithm for PAPR Reduction of Space-Frequency Coded OFDM Systems Without Side Information

Naeiny, Mahmoud Ferdosizade; Marvasti, Farokh

doi:10.1109/tvt.2011.2109070

Cited by 50 publications

(6 citation statements)

References 25 publications

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“…This method is used for minimization of peak to average transmits power of multicarrier transmission system with selected mapping [17]. Fig.5 shows the block diagram of SLM technique.…”

Section: Selected Mapping (Slm) Techniquementioning

confidence: 99%

A Study of Performance Enhancement Schemes for Multicarrier Transmission

Choudhary¹,

Gupta²

2013

IJCA

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OFDM allow the transmission of high data rates over broadband channel due to the spectral bandwidth efficiency, robustness to the multipath delay etc. However OFDM signal are very sensitive to nonlinear effects due to the high peak-toaverage power radio (PAPR), which is one of the major drawback of OFDM system. The high PAPR results, high inband distortion and out-of-band radiation ,inter-carrier interference(ICI) and degradation of bit error rate (BER) performance, all these losses occur due to the non-linearity of HPA(high power amplifier). The complexity of analog-todigital converter (ADC) and digital-to-analog converter (DAC) also get increased if the PAPR of OFDM signal is high. Thus in OFDM system one of the important research areas is reduction of PAPR . This paper reviews the conventional PAPR reduction schemes for achieving the low computational complexity in wireless communication systems.

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“…This method is used for minimization of peak to average transmits power of multicarrier transmission system with selected mapping [17]. Fig.5 shows the block diagram of SLM technique.…”

Section: Selected Mapping (Slm) Techniquementioning

confidence: 99%

A Study of Performance Enhancement Schemes for Multicarrier Transmission

Choudhary¹,

Gupta²

2013

IJCA

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“…,0 ≤ t ≤NT (9) In general, the PAPR of OFDM signal is defined as the ratio period between the maximum instantaneous power and its average power during an OFDM symbol.…”

Section: Selected Mapping For Peak-to-average Power Ratio Reductimentioning

confidence: 99%

“…To overcome this problem, some algorithms have been proposed, which reduce the PAPR of the baseband OFDM signal [2]- [12]. Some of these methods need side information (SI) to be transmitted to the receiver, such as Partial Transmit Sequence (PTS) [8] and Selected Mapping (SLM) [9]. Some other methods do not need SI, such as clipping and filtering [5], tone reservation [6], [11], Polyphase Interleaving and Inversion [7] and Active Constellation Extension [2].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Peak to Average Power Ratio Reduction Techniques in Sfbc Ofdm System

Malathi¹,

Sasipriya²,

Saravanan³

2013

IOSR-JECE

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Orthogonal Frequency Division Multiplexing (OFDM) has become the most popular modulation echnique for high speed data transmission. But the great disadvantage of the OFDM technique is its high Peak to Average Power Ratio (PAPR). In this paper, the Selected Mapping (SLM) technique and Clipping and Differential Scaling is applied to Space Frequency Block Coded (SFBC) OFDM systems to reduce the PAPR with Alamouti coding scheme. In SLM technique, different representations of OFDM symbols are generated by rotation of the original OFDM frame by different phase sequences, and the signal with minimum PAPR is selected and transmitted. To compensate for the effect of the phase rotation at the receiver, it is necessary to transmit the index of the selected phase sequence as side information (SI). Additionally, a suboptimum detection method that does not need SI is introduced at the receiver side. In Clipping and Differential Scaling technique, the amplitude of complex OFDM signal is clipped and then scaled in such a way so that the PAPR is reduced without causing much degradation in bit error rate (BER). The threshold values for clipping and scaling is determined using Monte Carlo Simulations. Simulation results show that the SLM method and Clipping and Scaling method effectively reduce the PAPR.

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“…It generates the set of favourable blocks at the transmitter end which represent the original information and then chooses the most favourable block for transmission as proposed in [4].…”

Section: Selected Mapping(slm) Technique Fig 1 : Block Diagram Of Slmmentioning

confidence: 99%

Performance enhancement of OFDM signals using PAPR reduction Techniques and the Comparison of their Performance

Vittal¹

2012

IJCA

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Orthogonal frequency division multiplexing(OFDM) is a prominent technique for providing high Quality of service(QOS) to the users by mitigating the fading of signals and also for providing high data rates in multimedia services. But Peak to Average power ratio(PAPR) is a major technical challenge in OFDM which reduces the efficiency of RF Power amplifiers. In this paper, we describe the PAPR reduction techniques in OFDM signals and compare their performance.

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Selected Mapping Algorithm for PAPR Reduction of Space-Frequency Coded OFDM Systems Without Side Information

Cited by 50 publications

References 25 publications

A Study of Performance Enhancement Schemes for Multicarrier Transmission

A Study of Performance Enhancement Schemes for Multicarrier Transmission

Analysis of Peak to Average Power Ratio Reduction Techniques in Sfbc Ofdm System

Performance enhancement of OFDM signals using PAPR reduction Techniques and the Comparison of their Performance

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