Modified PTS with FECs for PAPR Reduction of OFDM Signals

Mukunthan, P.; Dananjayan, P.

doi:10.5120/1559-2081

Cited by 8 publications

(5 citation statements)

References 22 publications

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“…To minimize the PAPR we have to find the optimum set of phase factor as the phase factors are introduced to combine the PTSs [13]. The relationship between the phase factor and partial transmit sequence (PTS) given as = = (13) Where Θ, Θ = { , .... } (14) Here Θ represents the set which includes V phase factor and is called partial transmit sequence.…”

Section: Figure-3: Block Diagram Of Pts 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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Section: Figure-3: Block Diagram Of Pts Techniquementioning

confidence: 99%

A Study of Performance Enhancement Schemes for Multicarrier Transmission

Choudhary¹,

Gupta²

2013

IJCA

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“…In practice, they calculate the probability of PAPR exceeding a threshold as measurement index to represent the distribution of PAPR. This can be described as "Complementary Cumulative Distribution Function" (CCDF) and its mathematical expression as [16]…”

Section: The Papr Of the Signalmentioning

confidence: 99%

“…This expression assumes that the N time domain signal samples are mutually independent and uncorrelated and it is not accurate for a small number of subcarriers. Therefore, there have been many attempts to derive more accurate distribution of PAPR [16].…”

Section: The Papr Of the Signalmentioning

confidence: 99%

Analyses and Performance of Techniques PAPR Reduction for STBC MIMO-OFDM System in (4G) Wireless Communication

Sahraoui¹,

Messadeg²,

Doghmane³

2013

IJWMN

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An OFDM system is combined with multiple-input multiple-output (MIMO) in order to increase the diversity gain and system capacity over the time variant frequency-selective channels. However, a major drawback of MIMO-OFDM system is that the transmitted signals on different antennas might exhibit high peak-to-average power ratio (PAPR).In this paper, we present a PAPR analysis reduction of space-timeblock-coded (STBC) MIMO-OFDM system for 4G wireless networks. Several techniques have been used to reduce the PAPR of the (STBC) MIMOOFDM system: clipping and filtering, partial transmit sequence (PTS) and selected mapping (SLM). Simulation results show that clipping and filtering provides a better PAPR reduction than the others methods and only SLM technique conserve the PAPR reduction in reception part of signal.

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“…Many techniques to deal with PAPR issues have been proposed. These techniques include Clipping [4]- [7], Coding [8], [9], Multiple signal representation such as selective mapping (SLM) and PTS [10]- [13]. PTS is a distortionless method of PAPR reduction where the OFDM data block is divided into subblocks and each subblock is optimally shifted in phase, in order to reduce the probability of occurrence of high PAPR.…”

Section: Introductionmentioning

confidence: 99%

BER Analysis of OFDM Receiver Using MMSE Channel Estimation Method with PTS for Different Subblocks

Thanigasalam¹,

Dananjayan²

2013

IJCEE

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Abstract-Orthogonal frequency division multiplexing (OFDM) is widely used multi-carrier modulation technique in wireless networks because of its superiority. Partial Transmit Sequence (PTS) is one of the many methods of PAPR reduction technique that have been proposed to address the PAPR issue in OFDM systems. But PTS suffers from high computational complexity which increases exponentially with increase in the number of subblocks. Modified PTS technique has reduced this computational complexity by using neighborhood search algorithm to find the optimum set of phase factors to reduce the PAPR of the OFDM signal. In this work, MMSE channel estimation algorithm is used to evaluate the performance of the OFDM receiver using PTS as the PAPR reduction technique. The receiver performance is analyzed in terms of BER for different number of subblocks. Simulation results show that BER increases with PAPR reduction.Index Terms-Bit error rate (BER), minimum mean square error (MMSE) channel estimation, peak-to-average power ratio (PAPR), partial transmit sequence (PTS).

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Modified PTS with FECs for PAPR Reduction of OFDM Signals

Cited by 8 publications

References 22 publications

A Study of Performance Enhancement Schemes for Multicarrier Transmission

A Study of Performance Enhancement Schemes for Multicarrier Transmission

Analyses and Performance of Techniques PAPR Reduction for STBC MIMO-OFDM System in (4G) Wireless Communication

BER Analysis of OFDM Receiver Using MMSE Channel Estimation Method with PTS for Different Subblocks

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