Open AccessA combination of selected mapping and clipping to increase energy efficiency of OFDM systems
Author(s) -
Byung Moo Lee,
You Seung Rim,
Wonjong Noh
Publication year - 2017
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0185965
Subject(s) - clipping (morphology) , reduction (mathematics) , distortion (music) , orthogonal frequency division multiplexing , computer science , energy (signal processing) , efficient energy use , power (physics) , electronic engineering , mathematics , telecommunications , channel (broadcasting) , statistics , bandwidth (computing) , physics , engineering , electrical engineering , amplifier , philosophy , linguistics , geometry , quantum mechanics
We propose an energy efficient combination design for OFDM systems based on selected mapping (SLM) and clipping peak-to-average power ratio (PAPR) reduction techniques, and show the related energy efficiency (EE) performance analysis. The combination of two different PAPR reduction techniques can provide a significant benefit in increasing EE, because it can take advantages of both techniques. For the combination, we choose the clipping and SLM techniques, since the former technique is quite simple and effective, and the latter technique does not cause any signal distortion. We provide the structure and the systematic operating method, and show the various analyzes to derive the EE gain based on the combined technique. Our analysis show that the combined technique increases the EE by 69% compared to no PAPR reduction, and by 19.34% compared to only using SLM technique.