Open AccessPower efficient 2 × 1 space–time block code system with antenna shuffling
Author(s) -
Joung J.
Publication year - 2018
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.2018.0063
Subject(s) - space–time block code , shuffling , transmitter , antenna (radio) , computer science , block code , amplifier , power (physics) , code (set theory) , block (permutation group theory) , beamforming , electronic engineering , mimo , mathematics , telecommunications , engineering , physics , decoding methods , channel (broadcasting) , geometry , set (abstract data type) , bandwidth (computing) , quantum mechanics , programming language
A transmit antenna shuffling method is proposed for a power efficient 2 × 1 space–time block code (STBC) system. Unlike a conventional STBC system that has identical power amplifiers (PAs), an asymmetric STBC (A‐STBC) transmitter considered in this Letter has two asymmetric PAs, i.e. low‐power and high‐PAs. Considering the asymmetric PAs, the authors propose an antenna shuffling method with 1‐bit feedback to improve the power efficiency (PE) of the STBC system. Numerical results verify that the proposed A‐STBC system with 1‐bit feedback antenna shuffling achieves a better PE‐and‐rate tradeoff and the potential ability of the small amount of feedback information for the power efficient systems.