Block coding scheme for reduction of peak to mean envelope power ratio of multicarrier transmission schemes

Jones, A.E.; Wilkinson, T.A.; Barton, S.K.

doi:10.1049/el:19941423

Cited by 607 publications

(234 citation statements)

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“…Figure 6 illustrates the theoretical and computer-simulated complementary cdf (ccdf) of PAPR for OFDM/ TDM as a function of K when N c = 256. The theoretical ccdf of OFDM/TDM and the conventional OFDM are computed using (8). Also presented below are the computer simulation results for the OFDM/TDM signal transmission to confirm the validity of the theoretical analysis.…”

Section: B Power Efficiency Issuementioning

confidence: 75%

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On transmission performance of OFDM-based schemes using MMSE-FDE in a frequency-selective fading channel

Gacanin¹,

Adachi

2011

J Wireless Com Network

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There has been greatly increasing interest in orthogonal frequency division multiplexing (OFDM) for broadband wireless transmission due to its robustness against multipath fading. However, OFDM signals have high peak-toaverage power ratio (PAPR), and thus, a power amplifier must be operated with a large input power backoff (IBO). Recently, OFDM combined with time division multiplexing (OFDM/TDM) using minimum mean square errorfrequency domain equalization (MMSE-FDE) has been presented to reduce the PAPR, while improving the bit error rate (BER) performance of conventional OFDM. In this article, by extensive computer simulation, we present a comprehensive performance comparison of OFDM-based schemes in a nonlinear and frequency-selective fading channel. We discuss about the transmission performance of OFDM-based schemes with respect to the transmit peak-power, the achievable capacity, the BER performance, and the signal bandwidth. Our results show that OFDM/TDM using MMSE-FDE achieves a lower peak-power and capacity than conventional OFDM, which means significant reduction of amplifier transmit-power backoff, but with a slight decrease in signal bandwidth occupancy.

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Section: B Power Efficiency Issuementioning

confidence: 75%

“…Of late, various approaches to reduce the PAPR of OFDM have been proposed [7][8][9][10][11][12]. The conventional OFDM and SC-FDE are compared in [13] with respect to their BER performances, PAPR, carrier frequency offset, and computational complexity.…”

Section: Introductionmentioning

confidence: 99%

On transmission performance of OFDM-based schemes using MMSE-FDE in a frequency-selective fading channel

Gacanin¹,

Adachi

2011

J Wireless Com Network

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“…The high PAPR brings on the OFDM signal distortion in the nonlinear region of high power amplifier (HPA) and the signal distortion induces the degradation of bit error rate (BER). To account for this issue, recently many works have been done in developing a method to reduce the PAPR [1,2,3]. Among these methods, the partial transmit sequence (PTS) scheme [2] is an efficient and a distortionless scheme for PAPR reduction by optimally combining signal subblocks.…”

Section: Introductionmentioning

confidence: 99%

“…As widely discussed in [1,2], the main limitation of OFDM-based transmission systems is the high peak-to-average power ratio (PAPR) of the transmitted signals. The high PAPR brings on the OFDM signal distortion in the nonlinear region of high power amplifier (HPA) and the signal distortion induces the degradation of bit error rate (BER).…”

Section: Introductionmentioning

confidence: 99%

PAPR reduction of an OFDM signal by use of PTS with minimum nonlinear distortion

Park

Song

2007

IEICE Electron. Express

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Abstract:A new partial transmit sequence (PTS) scheme that uses the amount of OFDM signal's nonlinear distortion to be caused by high power amplifier (HPA) is proposed. However, since it may not be practical to know in prior the exact characteristics of HPA, a new measure which is called adaptive nonlinear estimator (ANE), is achieved to estimate OFDM signals after the nonlinear HPA by applying gradient algorithm. According to combining ANE and iterative PTS (I-PTS) with simple subblock combining method, the proposed scheme can transmit the OFDM signal with minimum nonlinear distortion among OFDM signal candidates. From the results, it can be seen that a proposed scheme based-iterative PTS can achieve better performance with lower computational complexity when compared to that of conventional PTS.

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“…Several techniques have been proposed to combat this problem in OFDM systems like amplitude clipping [3], coding [4], partial transmit sequence [5], selected level mapping (SLM) [6], interleaving [7] and tone reservation [8]. However incase of NC-OFDM systems as some subcarriers are used for primary transmission and some for secondary transmission so any non linearity effect for secondary users can disturb the primary users as well.…”

Section: Introductionmentioning

confidence: 99%

Peak to Average Power Ratio Reduction in NC–OFDM Systems

Tabassum

Hussain

Ghafoor

2015

Journal of Electrical Engineering

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Non contiguous orthogonal frequency division multiplexing (NC-OFDM) is an efficient and adaptable multicarrier modulation scheme to be used in cognitive radio communications. However like OFDM, NC-OFDM also suffers from the main drawback of high peak to average power ratio (PAPR). In this paper PAPR has been reduced by employing three different trigonometric transforms. Discrete cosine transform (DCT), discrete sine transform (DST) and fractional fourier transform (FRFT) has been combined with conventional selected level mapping (SLM) technique to reduce the PAPR of both OFDM and NC-OFDM based systems. The method combines all the transforms with SLM in different ways. Transforms DCT, DST and FRFT have been applied before the SLM block or inside the SLM block before IFFT. Simulation results show the comparative analysis of all the transforms using SLM in case of both OFDM and NC-OFDM based systems.

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Block coding scheme for reduction of peak to mean envelope power ratio of multicarrier transmission schemes

Cited by 607 publications

References 1 publication

On transmission performance of OFDM-based schemes using MMSE-FDE in a frequency-selective fading channel

On transmission performance of OFDM-based schemes using MMSE-FDE in a frequency-selective fading channel

PAPR reduction of an OFDM signal by use of PTS with minimum nonlinear distortion

Peak to Average Power Ratio Reduction in NC–OFDM Systems

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