Energy efficiency comparison of Outphasing and IDP techniques with non-linear power amplifiers

Tahkoubit, Khaled; Shaïek, Hmaied; Roviras, Daniel; Ali-Pacha, Adda

doi:10.1109/commnet49926.2020.9199638

Cited by 1 publication

(1 citation statement)

References 7 publications

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“…Nevertheless, in LINC, the two generated signals before the amplification process have very high power, unlike the IDP method where the power of the two signals to be amplified are much lower. We have compared in [20] the energy efficiency between these two methods and we have shown that the performances with IDP technique are better. In [17], we have proposed the IDP method and we have restricted our theoretical analysis to the order = 2.…”

Section: Introductionmentioning

confidence: 99%

Generalized Iterative Dichotomy PAPR Reduction Method for Multicarrier Waveforms

et al. 2021

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5th generation systems (5G) will be based on Orthogonal Frequency Division Multiplexing (OFDM) multicarrier modulation technique. This modulation has a very high Peak to Average Power Ratio (PAPR). This high PAPR is a drawback when nonlinear Power Amplifiers (PA) are operated near the saturation region, for energy efficiency purposes, due to in-band and out-of-band impairments. In this paper, a new PAPR reduction technique called Iterative Dichotomy PAPR (IDP) is proposed. This method is suited for any multicarrier modulation and is studied here using realistic PA model. For evaluating the signal distortions, two main metrics have been considered to evaluate the performance of IDP technique: bit error rate (BER) and power spectrum density (PSD). The analytical expressions of the IDP technique for any dichotomy order is firstly described and subsequently the energy efficiency for different values is compared. We have shown that the proposed IDP method reduces the PAPR by 2.2 for = 2 and 4 for = 4. Regarding the energy efficiency, for the same Error Vector Magnitude (EVM) and the same PA power consumption, the output signal power obtained with the IDP based technique outperforms classical OFDM by 20%, 50% and 80% for = 2, = 3 and = 4, respectively.

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Section: Introductionmentioning

confidence: 99%