Energy‐efficient dynamic power allocation in multi‐antenna transmissions with imperfect channel estimation and feedback. Issue 21 (1st October 2015)

• Record Type: Journal Article
• Authors: Yang, Ruizhe; Zheng, Chen; Wang, Zhuwei; Zhang, Yanhua; Yu, Fei Richard
• Is Part Of: Electronics letters. Volume 51:Issue 21(2015)
• Page Start: 1711
• Page End: 1713
• Publication Date: 2015-10-01
• Subjects: antenna arrays -- correlation methods -- Markov processes -- channel estimation -- codes -- optimisation -- Kalman filters; energy‐efficient dynamic power allocation scheme -- multiantenna transmissions -- imperfect channel estimation -- imperfect channel feedback -- energy efficiency maximisation -- lower bounded ergodic EE -- temporal correlation analysis -- Kalman estimation -- differential codebook‐based feedback -- Gauss‐Markov channel; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2015.2199
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : 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.