Open AccessEnergy‐efficient dynamic power allocation in multi‐antenna transmissions with imperfect channel estimation and feedback
Author(s) -
Yang Ruizhe,
Zheng Chen,
Wang Zhuwei,
Zhang Yanhua,
Yu Fei Richard
Publication year - 2015
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.2015.2199
Subject(s) - codebook , computer science , channel (broadcasting) , control theory (sociology) , power (physics) , kalman filter , mathematical optimization , fading , mathematics , algorithm , telecommunications , physics , control (management) , quantum mechanics , artificial intelligence
A dynamic power allocation scheme is proposed to maximise the energy efficiency (EE) for multi‐antenna transmissions when both the imperfect channel estimation and feedback are considered. The lower bounded ergodic EE is given by the temporal correlation analysis from the Kalman estimation and the differential codebook‐based feedback of the Gauss–Markov channel, based on which both the powers of data and training are adaptively optimised. Simulations show that the proposed dynamic power allocation scheme outperforms the traditional power allocation schemes.