Minimisation of the peak to mean envelope power ratio of multicarrier transmission schemes by block coding

Wilkinson, T.A.; Jones, A.E.

doi:10.1109/vetec.1995.504983

Cited by 192 publications

(93 citation statements)

References 9 publications

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“…Furthermore since in this solution the encoding and decoding are also performed by the use of look-up tables, which is also requires large memory when the OFDM block length increases. In [9], the selection of the appropriate codeword has been developed based on specific sequences such as Shapiro-Rudin and Golay sequences. However, neither in [8] nor in [9] the error correcting issue has been addressed.…”

Section: Techniquesmentioning

confidence: 99%

“…In [9], the selection of the appropriate codeword has been developed based on specific sequences such as Shapiro-Rudin and Golay sequences. However, neither in [8] nor in [9] the error correcting issue has been addressed. The study in [10] discusses the error correction problem where firrst a powerful block code is selected and then by using a weight vector the PAPR of the codeword is decreased.…”

Section: Techniquesmentioning

confidence: 99%

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A New Approach to Enhance Performance of OFDM using BCH and Newly Designed Filter

Sharma¹,

Sharma²,

Kumar³

2014

IJCA

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Orthogonal frequency division multiplexing (OFDM) is a multicarrier communication technique and it has capability to rise above the frequency-selective fading problem, which is common in wireless broadband communications. This has made it popular since last few years. The OFDM system suffers from a number of drawbacks such as the high peak-toaverage power ratio (PAPR). Many PAPR reduction techniques used either destroy the system performance, which is the clipping technique or increases the overall complexity of the system, such as the selective mapping (SLM). In this paper a unique approach has been proposed to obtain a new code from the existing codes in order to reduce the bit error rate (BER), to mitigate the gap between the performance and Shannon limit while the bounded peak average power ratio (PAPR) of OFDM symbol is guaranteed. A new code based on the BCH with a Barthannwin Wave Filter has been proposed to achieve the desired results. General Terms BCH with Barthannwin Wave Filter

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Section: Techniquesmentioning

confidence: 99%

Section: Techniquesmentioning

confidence: 99%

A New Approach to Enhance Performance of OFDM using BCH and Newly Designed Filter

Sharma¹,

Sharma²,

Kumar³

2014

IJCA

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“…ODFM is a good solution for high speed digital communications. But high Peak to Average Power Ratio (PAPR) is a major problem in OFDM [8], [9], [10]. In OFDM, the data is spreaded over a large number of orthogonal carriers modulated at lower rates.…”

Section: Introductionmentioning

confidence: 99%

Cyclic Redundancy Check: A Novel Software Implementation for machine cycle optimization and analysis for deciding Low Peak to Average Power Ratio Discrete Sequences

Kotade

Nandgaonkar

Nalbalwar

et al. 2017

Proceedings of the International Conference on Communication and Signal Processing 2016 (ICCASP 2016)

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Cyclic Redundancy Check (CRC) is widely used error detection technique in many contemporary communication systems such as Fourth Generation (4G) Mobile Communication-Long Term Evolution (LTE) and LTE Advanced, Wi-Fi, Wireless LAN. For real time embedded systems, code size (Memory), Processor Machine Cycle (Speed) and Power are the three important parameters which are needs to be optimized. CRC is very effective and simple for error detection but its software implementation is not efficient. This paper presents software implementation of CRC using Bit by Bit (BYB) and Look-Up Table (LUT) approaches reported in the earlier literature. Using these approaches, we have compared machine cycle requirements for computation of CRC-3/5/8/12/16 generator polynomials. We have used TMS320C6713 and Freescale Star Core SC140 architectures for comparing the machine cycle requirements. Then we have intuitively modified our software implementations (Based on C program) of LUT using In Place Computation (IPC).This IPC-LUT based CRC computation is found to be more optimized in terms of machine cycle and memory compared to LUT method. We have reduced the machine cycle requirement by 39.47 % using our IPC-LUT approach compared to conventional LUT. We have also developed inline assembly code for SC140 architecture using IPC-LUT approach that takes only 45 machine cycles for computations. Peak to Average Power Ratio (PAPR) is one of the major drawback of contemporary communication systems. For third parameter (Power), we have simply done the analysis to fix up the decision criteria for deciding the sequences having low PAPR.

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“…Amplifiers with large linear range are expensive and this can increase the cost of the implementation of OFDM. To overcome such effects, many PAPR reduction techniques such as distortion, distortionless or coding have been proposed for OFDM signals [3][4][5][6][7][8][9][10][11][12]. Distortionless techniques such partial transmit sequence (PTS) [13] and selective mapping (SLM) [14] can improve the PAPR statistics with only a small data rate loss but has no inherent error control.…”

Section: Introductionmentioning

confidence: 99%

Modified PTS with FECs for PAPR Reduction of OFDM Signals

Mukunthan¹,

Dananjayan²

2010

IJCA

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Partial transmit sequence (PTS) is an attractive technique for PAPR reduction without distortion, but to obtain preferable PAPR performance it needs many inverse fast Fourier transforms (IFFTs), which results in high computational complexity. In order to reduce the complexity, modified PTS technique, with real and imaginary parts, separately multiplied with phase factors is considered in this paper. To reduce PAPR further the forward error-correcting codes (FECs) such as Golay codes and Turbo codes are employed in the modified PTS radix FFT, where, the PAPR is jointly optimized in both the real and imaginary part. The simulation results show that the combined FEC with modified PTS technique significantly provides better PAPR reduction with reduced computational complexity compared to ordinary PTS with FEC. General TermsOrthogonal frequency division multiplexing (OFDM), peak-toaverage power ratio (PAPR), partial transmit sequence (PTS).

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Minimisation of the peak to mean envelope power ratio of multicarrier transmission schemes by block coding

Cited by 192 publications

References 9 publications

A New Approach to Enhance Performance of OFDM using BCH and Newly Designed Filter

A New Approach to Enhance Performance of OFDM using BCH and Newly Designed Filter

Cyclic Redundancy Check: A Novel Software Implementation for machine cycle optimization and analysis for deciding Low Peak to Average Power Ratio Discrete Sequences

Modified PTS with FECs for PAPR Reduction of OFDM Signals

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