On Optimizing the PAPR of OFDM Signals With Coding, Companding, and MIMO

Sandoval, F.; Poitau, Gwenael; Gagnon, François

doi:10.1109/access.2019.2899965

Cited by 19 publications

(10 citation statements)

References 19 publications

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“…Lastly, there is a companding technique, which is a method proposed in the past based on the μ-law [3]. Reducing the PAPR is also known as the compressing and expanding technique.…”

Section: Compandingmentioning

confidence: 99%

“…The significance of STBC and MIMO in developing wireless communication is certainly proved when they are adopted in the IEEE 802.11n standard [2]. However, the use of MIMO is only limited to narrowband channels because the application of this kind of system to a wideband channel will lead to an unwanted phenomenon called inter-symbol interference (ISI) [3]. ISI happens when a signal symbol interferes with the following symbol, distorting the signal.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid PAPR Reduction Schemes for MIMO-OFDM System

Hlaing¹,

Farzamnia²,

Lee³

2022

Proceedings of the Multimedia University Engineering Conference (MECON 2022)

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The emergence of both multiple-input-multiple-output (MIMO) systems and Orthogonal-Frequency-Division-Multiplexing (OFDM) is crucial to the recent rapid development of wireless communication, especially cellular communication. However, this MIMO-OFDM system inherits a significant disadvantage of using OFDM: the high peak-to-average-power ratio (PAPR). Thus, this paper proposes a hybrid PAPR reduction technique that combines three techniques: convolutional code, successive suboptimal cross-antenna rotation, inversion (SS-CARI), and modified companding. Results from the study show that a constraint length of four with a code rate of 1/4 is the value of parameters that maintains PAPR for the convolutional coding techniques, and 16 is the number of subblocks with the best PAPR performance for the SS-CARI technique. Finally, the parameter value that has the best PAPR performance for the μ-law companding technique is 255 for the companding parameter, one for the peak ratio (PR). Compared to the system without PAPR reduction schemes, this hybrid PAPR reduction scheme can reduce the PAPR by around 65.22% at the Complementary Cumulative Density Function (CCDF) of 10 -3.

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“…Lastly, there is a companding technique, which is a method proposed in the past based on the μ-law [3]. Reducing the PAPR is also known as the compressing and expanding technique.…”

Section: Compandingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid PAPR Reduction Schemes for MIMO-OFDM System

Hlaing¹,

Farzamnia²,

Lee³

2022

Proceedings of the Multimedia University Engineering Conference (MECON 2022)

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“…If M IFFT points from the i-th transmitting antenna are considered, the discrete time baseband OFDM signal is expressed by Eq. ( 1) [25].…”

Section: Proposed Link Designmentioning

confidence: 99%

Performance Investigation of MIMO Based CO-OFDM FSO Communication Link for BPSK, QPSK and 16-QAM under the Influence of Reed Solomon Codes

Kumar

Payal

2021

J. Eng. Technol. Sci.

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The MIMO based CO-OFDM FSO communication system is emerging as a promising approach to meet the future bandwidth requirements for seamless communication. The atmosphere being the propagation medium is a major hindrance in wide-scale acceptability of FSO technology. For seamless and error-free transmission and reception of data, a novel concept of MIMO integrated with RS code is proposed in this paper. The system performance of an RS 64 (RS (255,127)) coded MIMO-based CO-OFDM FSO communication link was investigated using BPSK, QPSK and 16-QAM under the combined effects of geometric losses, path losses and atmospheric attenuations at a hitherto un-investigated data rate of 40 Gbps and a link distance of 5 km. The modified gamma-gamma distribution was used for modeling a moderately turbulent channel. With link length varying over a range of 1 to 5 km, error correction was maximum in 16-QAM as compared to BPSK and QPSK, with 150 to 167 corrected errors. In terms of PAPR, PSK was more apt than QAM, but with a compromise in BER. The geometric losses were reduced with link length due to an increase in error correction capability for all three modulation cases, with the least losses occurring in 16-QAM. At the target bit error rate (BER), the signal to noise ratio (SNR) required for BPSK and QPSK was higher by 3.98 dB and 6.14 dB compared to 16-QAM.

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“…To satisfy these thresholds, a huge number of researches have been represented, such as, for instance, the distortionless methods (i.e. selective mapping (SLM) and partial transmit sequences (PTS) families) [1], [2], [3], companding techniques [4], encoding family schemes [5], tone reservation (TR) methods [6], clipping and filtering schemes [7], [8], artificial neural networks (ANN) family [9] and, recently, the chaotic sequences family [10]. This section, however, will discuss the recent proposals and those which were, in somehow, able Manuscript received September 9, 2022; revised October 24, 2022.…”

Section: Introductionmentioning

confidence: 99%

Investment of Cyclic Prefix to Reduce the Peak-to-Average Power Ratio and Recover Original Phases Blindly

Al-Rayif

2022

JCOMSS

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When dealing with the phenomenon of unexpected high peak-to-average power ratio (PAPR) caused by multicarrer techniques, it is rarely to find a proposed solution that addresses the most important challenges together, that are; reducing the PAPR, achieving performance identical, mostly, to the theoretical curve and a reasonable level of computational complexity. This paper presents a new proposal that is able to achieve these three criteria together as the following. First, reducing the PAPR curves through easy development in the selective mapping (SLM) structure. Second, identifying the original transmitted phase block by taking advantage of the cyclic prefix structure and its mechanism, without any explicit side information, while maintaining the system performance. Lastly, these achievements were obtained at low computational complexity comparing to the traditional methods of SLM PAPR reduction schemes. This proposed method is referred to as; Injected and Extracted Short-SLM to and from the Cyclic Prefix (IES-SLM-CP). The appropriate short phase sub-block is injected to a specific locations of CP, and at the receiver side, this sub-block can be extracted from the CP to reconstruct the whole original phase block.

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On Optimizing the PAPR of OFDM Signals With Coding, Companding, and MIMO

Cited by 19 publications

References 19 publications

Hybrid PAPR Reduction Schemes for MIMO-OFDM System

Hybrid PAPR Reduction Schemes for MIMO-OFDM System

Performance Investigation of MIMO Based CO-OFDM FSO Communication Link for BPSK, QPSK and 16-QAM under the Influence of Reed Solomon Codes

Investment of Cyclic Prefix to Reduce the Peak-to-Average Power Ratio and Recover Original Phases Blindly

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