Reduced Complexity Hybrid PAPR Reduction Schemes for Future Broadcasting Systems

Sravanti, Thota; Kamatham, Yedukondalu; Paidimarry, Chandra Sekhar

doi:10.1007/978-3-030-24318-0_9

Cited by 6 publications

(1 citation statement)

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“…As per the requirements of the system, anyone of the methods is combined with other, called hybrid methods. For example, PTS is combined with linear or non-linear companding techniques [17], SLM is combined with PTS [18] which reduces the hardware and computational complexities by reducing PAPR than single methods.…”

Section: Ofdm Is a Widespread Modulation Technique Which Triggers Allmentioning

confidence: 99%

Analysis of Hybrid PAPR Reduction Methods of OFDM Signal for HPA Models in Wireless Communications

Sravanti

Kamatham²,

Paidimarry

2020

IEEE Access

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Orthogonal Frequency Division Multiplexing (OFDM) suffers from a high Peak-to-Average Power Ratio (PAPR). Designing a High Power Amplifier (HPA) with high PAPR is not a wise technique as it roots the amplifier to operate in a non-linear region which is intricate. Linearity and power efficiency are important constraints of HPA which cannot be achieved at the same time. Therefore, perfect linearity is observed when efficiency is low or vice versa and efficiency can be improved by decreasing the PAPR. In this paper, the PAPR is mitigated by using Partial Transmit Sequence (PTS), Selected Mapping (SLM), Hybrid and proposed methods. Analysis of OFDM with high PAPR passing through different HPA models is evaluated in terms of Power Spectral Density (PSD), gain and efficiency for all PAPR reduction methods considered in this work. The results are encouraging by using hybrid PAPR reduction method, HPAs can be operated in a linear region to provide higher efficiency compared to non-hybrid PAPR reduction methods. Hence, hybrid PAPR reduction methods can be used even in future wireless communications systems including 5G and beyond. INDEX TERMS Companding, high power amplifier models, orthogonal frequency division multiplexing, peak to average power ratio, partial transmit sequence, selected mapping.

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Section: Ofdm Is a Widespread Modulation Technique Which Triggers Allmentioning

confidence: 99%