PAPR Reduction in MIMO-OFDM Systems: Spatial and Temporal Processing

Karimi, Bashir Reza; Beheshti, Mojtaba; Omidi, Mohammad Javad

doi:10.1007/s11277-014-1965-y

Cited by 9 publications

(3 citation statements)

References 18 publications

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“…MIMO‐OFDM systems tend to show an increase in the PAPR, thereby rendering such systems more complex. Two methods have been designed to minimize the PAPR: (1) spatial and temporal shifting (STS) and (2) spatial and temporal interleaving (STI) . According to the STS method, even subblocks are shifted while odd subblocks are left unchanged during temporal processing.…”

Section: Related Workmentioning

confidence: 99%

“…Two methods have been designed to minimize the PAPR: (1) spatial and temporal shifting (STS) and (2) spatial and temporal interleaving (STI). 17 According to the STS method, even subblocks are shifted while odd subblocks are left unchanged during temporal processing. Both temporal and spatially shifted results are combined to generate a sequence with low PAPR that is used for transmission.…”

Section: Related Workmentioning

confidence: 99%

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Secure cognitive radio‐based synchronized transmission of 5G signals using massive MIMO‐OFDM‐ES

Pari

Karuppiah

Islam

2018

Int J Communication

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Summary A cognitive radio network (CRN) can address spectrum scarcity issues to achieve higher levels of spectral efficiency. Fifth‐generation (5G) technologies are advanced telecommunication technologies that are built into CRNs. Network performance is enhanced when using a massive multiple input multiple output (MIMO) system that tolerates a large number of users based on the use of multiple antennas. Several previous research works have been conducted on 5G CRNs, although these works have failed to mitigate interference and the peak‐to‐average power ratio (PAPR). In this paper, a 5G CRN with massive MIMO that ensures secure data transmission is developed. Security is ensured via the standardized key–based secrecy method supported by a certificate authority. A CRN fusion centre (FC) plays a vital role in decision making. Fusion centre rotation is applied to mitigate interference. Massive MIMO‐OFDM effective signalling is used to address PAPR problems. The proposed CRN is experimentally modelled using network simulator 3, and its performance is evaluated. Our simulation results reveal improvements in channel capacity, a reduction in the PAPR and bit error rates, and improvements in spectral efficiency.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Secure cognitive radio‐based synchronized transmission of 5G signals using massive MIMO‐OFDM‐ES

Pari

Karuppiah

Islam

2018

Int J Communication

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“…In multiple signal representation (MSR) approaches, a distinct phase sequence is created based on the input signal, and the candidate signal for transmission is picked from the least PAPR [13]. Similarly, distortion-free approaches such as partial transmit sequence (PTS) [14], selective mapping (SLM) [15], tone injection [16], and active constellation extension [17] reduce PAPR at the expense of increasing transmit power, decreasing data rate, and increasing computational complexity. This occurred as a result of a rise in the number of inverse fast Fourier transform (IFFT) operations, which makes it computationally complex and required the transmission of side information.…”

Section: Introductionmentioning

confidence: 99%

Peak-to-average power ratio minimization and complexity reduction in MIMO-OFDM systems using spatial circular shifting and temporal interleaving method

Ramadevi,

Trinatha Rao

2024

IJECE

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Multiple-input multiple-output orthogonal frequency division multiplexing(MIMO-OFDM) technological support for the simultaneous and frequent access by a large number of users to radio resources. For 5G cellular systems, this exhaust is not enough to provide physical layer services. An appropriate Peak-to-average power ratio (PAPR) minimization principle, which maximizes data capacity and channel utility, has been used to address this issue. In this paper, mainly focus on minimize the high PAPR of the candidate sequence of the OFDM sub-block using modified enhancement asymmetric arithmetic coding scheme (M-EAAC). According to this, circular shifting of the candidate sequence is established in the spatial circular shifting and temporal interleaving (SCS-TI) form to generated different set of conjugated phases which is multiplied with candidate sequence. Then, the transmitting antenna is identified the best lowest PAPR of the candidate sequence is chosen for entire OFDM data transmission. The simulation results conveys that the proposed SCS-TI method provide acceptable improvement in the PAPR reduction as compared with conventional selective mapping(SLM)and pseudo-random SLM(PR-SLM). Moreover, the complexity evaluation which ensure the proposed method provides better improvement at three important stages includes inverse fast Fourier transform (IFFT) operation, optimization process, and PAPR calculation at each candidate sequence.

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Peak‐to‐Average Power Ratio Reduction Techniques

2019

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Multicarrier transmission schemes produce time‐domain (TD) signals with large envelope fluctuations. These signals suffer from nonlinear distortions when passing through a high‐power amplifier (HPA) because of its nonlinear transfer function. Several metrics are used to quantify the envelope fluctuations: peak‐to‐average power ratio (PAPR), crest factor (CF), and cubic metric (CM). Multiple techniques and algorithms have been proposed for reducing such metrics in the literature. This article reviews all the possible PAPR reduction techniques and emphasizes the importance of their application in multicarrier schemes. Besides, new variants adapted to multiple‐input multiple‐output (MIMO) orthogonal frequency division multiplexing (OFDM) are also presented, which take on importance in 5G systems. Finally, a comparison among these techniques is presented in terms of the key aspects considered when designing a 5G system: power increase, implementation complexity, bit error rate (BER) degradation, and required side information. It is shown that the selection of the PAPR reduction technique depends on the application, the system requirements, and the scenario.

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PAPR Reduction in MIMO-OFDM Systems: Spatial and Temporal Processing

Cited by 9 publications

References 18 publications

Secure cognitive radio‐based synchronized transmission of 5G signals using massive MIMO‐OFDM‐ES

Secure cognitive radio‐based synchronized transmission of 5G signals using massive MIMO‐OFDM‐ES

Peak-to-average power ratio minimization and complexity reduction in MIMO-OFDM systems using spatial circular shifting and temporal interleaving method

Peak‐to‐Average Power Ratio Reduction Techniques

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