Open AccessReduced feedback link design for device‐relaying enhanced multiple‐input single‐output orthogonal frequency‐division multiple access wireless systems
Author(s) -
Ozbek B.
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.2919
Subject(s) - orthogonal frequency division multiple access , telecommunications link , relay , computer science , base station , orthogonal frequency division multiplexing , wireless , frequency divider , computer network , scheduling (production processes) , channel state information , electronic engineering , frequency division multiple access , channel (broadcasting) , engineering , telecommunications , power (physics) , physics , operations management , quantum mechanics , power dividers and directional couplers
Device‐relaying enhanced multiple‐input single‐output (MISO) orthogonal frequency‐division multiple access (OFDMA) systems are one of the promising and cost‐effective methods to satisfy data rate requirements of future wireless networks. To implement device relaying in MISO‐OFDMA systems efficiently, the channel state information belonging to all links is required at the base station. However, the feedback load increases with the number of users, device‐relay candidates, antennas and subcarriers. A novel scheduling and a joint feedback link design and relay selection algorithm in device‐relaying enhanced downlink MISO‐OFDMA systems are proposed, while reducing the feedback load significantly without sacrificing the system performance.