Open AccessOFDM With Index Modulation Assisted by Multiple Amplify-and-Forward Relays
Author(s) -
Guo Sheng,
Shuping Dang,
Zhenrong Zhang,
Enis Kočan,
Milica Pejanović-Djurišić
Publication year - 2019
Publication title -
ieee wireless communications letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.23
H-Index - 72
eISSN - 2162-2345
pISSN - 2162-2337
DOI - 10.1109/lwc.2019.2893258
Subject(s) - relay , orthogonal frequency division multiplexing , computer science , subcarrier , diversity gain , modulation (music) , multiplexing , signal to noise ratio (imaging) , selection (genetic algorithm) , maximal ratio combining , modulation index , electronic engineering , fading , topology (electrical circuits) , control theory (sociology) , telecommunications , channel (broadcasting) , electrical engineering , power (physics) , engineering , physics , voltage , control (management) , quantum mechanics , artificial intelligence , acoustics , inverter
A multi-relay assisted orthogonal frequency division multiplexing system with index modulation is proposed in this letter, assuming that amplify-and-forward (AF) relaying protocol is adopted at relays. Two commonly used AF protocols are considered: 1) fixed-gain AF and 2) variable-gain AF relaying protocols. To utilize relays in an efficient manner, we also employ two multi-carrier relay selection...
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