Algorithm Based New Tone Reservation Method for Mitigating PAPR in OFDM Systems

Saha, Tanmoy; Chakrabarty, Shreyasi; Bhattacharjee, Subhankar; Sil, Sayantan

doi:10.1515/eletel-2017-0039

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…The first weakness is the PAPR, as well as OOB due to the OFDM using a square wave as the baseband waveform. Accordingly, this reduces the power efficiency and performance of the OFDM spectrum, which many researchers have investigated [7], [31], [32].Moreover, the wastage of these radio resources in OFDM results because they use the cyclic prefix to avoid multipath fading. Furthermore, the OFDM, in this case, represented 10%of the allocated bandwidth to prevent ISI and inter-block interference (IBI) from occurring [12].…”

Section: Criteria For Waveforms Candidates a Ofdm Waveforms Criteriamentioning

confidence: 99%

Green Coexistence for 5G Waveform Candidates: A Review

2019

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There is a growing demand for 5G applications in all fields of knowledge. Current applications, such as the Internet of Things, smart homes, and clean energy, require sophisticated forms of 5G waveforms. Researchers and developers are investigating the requirements of 5G networks for better waveform types, which will result in high spectrum efficiency and lower latency with less complexity in systems. This paper proposes an assessment of various 5G waveform candidates [filtered orthogonal frequency-division multiplexing (OFDM), universal filtered multicarrier (UFMC), filter bank multicarrier (FBMC), and generalized frequency-division multiplexing] under the key performance indicators (KPIs). This paper assesses the main KPI factors (computational complexity, peak-to-average-power ratio, spectral efficiency, filter length, and latency). Moreover, this paper compares and evaluates all KPI factors in various 5G waveforms. Finally, this paper highlights the strengths and weaknesses of each waveform candidate based on the KPI factors for better outcomes in the industry. In conclusion, the current review suggests the use of optimized waveforms (FBMC and UFMC) for better flexibility to overcome the drawbacks encountered by previous works. Regarding coexistence, FBMC and UFMC showed better coexistence with CP-OFDM in 4G networks with a new radio spectrum. The rapprochement between the above-mentioned waveforms has been called green coexistence and is due to the mix between one waveform in 4G networks and two waveforms in 5G networks based on the subcarrier and subband shaping (FBMC and UFMC).

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Section: Criteria For Waveforms Candidates a Ofdm Waveforms Criteriamentioning

confidence: 99%

Green Coexistence for 5G Waveform Candidates: A Review

2019

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“…Generally, the complementary cumulative probability distribution function (CCDF) of the PAPR is used to measure its distribution, which indicates the probability that the PAPR exceeds a given value λ [7].…”

Section: Analysis Of the Impact Of High Papr On Satellite Power Utilimentioning

confidence: 99%

APR Reduction Technique based on OFDM Pilot Filter Bank Limiting for Satellite Mobile Communications

Dai

2018

MATEC Web Conf.

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Combined with OFDM (Orthogonal Frequency Division Multiplexing), satellite mobile communications will effectively achieve on-demand communication in areas with an ultra-low density of users. With OFDM multiple access optimization, the bandwidth utilization efficiency can be increased by 5 to 10 times. However, satellites are power-constrained systems, so higher PAPR requires greater power backoff, resulting in a decline in satellite transmission capacity. To use OFDM technology in satellites, there are problems such as reduced transmission capacity resulted from high PAPR, complication of lowering PAPR, and difficulty in hardware implementation. In order to deal with the problem of high bit error rate and hardware implementation difficulties in PAPR reduction technique of non-orthogonal frequency division multiplexing, this paper proposes a limiting PAPR reduction technique with OFDM pilot filter banks for satellite mobile communications. Firstly, the applicability of OFDM in satellite mobile communications is analyzed, and the influence of high PAPR on satellite power utilization and the influence of frequency shift sensitivity on inter-satellite communication interference are obtained. Then design the PAPR reduction technique based on the pilot filter bank. By setting the tunable filter bank to the pilot, the sideband power suppression in the OFDM frequency domain is realized, and the PAPR of the OFDM signal is reduced. Finally, the experimental results show that the PAPR performance is improved by 3dB without reducing the bit error rate.

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Algorithm Based New Tone Reservation Method for Mitigating PAPR in OFDM Systems

Cited by 2 publications

References 11 publications

Green Coexistence for 5G Waveform Candidates: A Review

Green Coexistence for 5G Waveform Candidates: A Review

APR Reduction Technique based on OFDM Pilot Filter Bank Limiting for Satellite Mobile Communications

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