Open AccessModified SLM scheme of FBMC signal in satellite communications
Author(s) -
Yang Chaosan,
Liu Rongke,
Zhao Ling,
Wei Yuhang
Publication year - 2019
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2018.5101
Subject(s) - filter bank , signal (programming language) , computer science , amplifier , orthogonal frequency division multiplexing , electronic engineering , communications satellite , doppler effect , power (physics) , telecommunications , scheme (mathematics) , satellite , mathematics , bandwidth (computing) , channel (broadcasting) , engineering , physics , mathematical analysis , quantum mechanics , astronomy , programming language , aerospace engineering
In this study, a segment‐selected mapping (SSLM) scheme is proposed to reduce the peak‐to‐average power ratio (PAPR) of the filter bank multi‐carrier (FBMC) signal in satellite communications. The standard selected mapping (SLM) scheme is suggested to reduce the PAPR of the traditional multi‐carrier signals. However, it cannot be directly applied to the FBMC signal due to the overlapping nature of the FBMC signal. In the proposed method, each symbol in the FBMC signal is divided into several segments to solve the overlapping problem. Each segment is regarded as an independent unit, and rotates a suitable phase to minimise the PAPR in the frequency domain. The authors simulated the FBMC signal in the satellite communications by introducing the influence of the high power amplifiers and the Doppler frequency shift. The simulation results from complementary cumulative distribution function of the PAPR show that the proposed scheme can achieve about 0.3 dB PAPR performance compared to the existing dispersive SLM scheme, with lower complexity.