NDLI: Resource allocation for MIMO multi-relay systems with zero-forcing relaying

Content Provider	IEEE Xplore Digital Library
Author	Xueyi Li Liping Luo Guangchi Zhang Qi Zhang Jiayin Qin
Copyright Year	2013
Description	Author affiliation: Coll. of Inf. Sci. & Eng., Guangxi Univ. for Nat., Nanning, China (Liping Luo) \|\| Dept. of Electron. & Commun. Eng., Sun Yat-Sen Univ., Guangzhou, China (Qi Zhang; Jiayin Qin) \|\| Sch. of Inf. Eng., Guangdong Univ. of Technol., Guangzhou, China (Xueyi Li; Guangchi Zhang)
Abstract	In this paper, we consider a two-hop multiple-input multiple-output (MIMO) multiple relays communication networks, where each relay employs the zero-forcing (ZF) relaying scheme, we assume that the perfect channel state information (CSI) is available at the source, the destination and the relays. We propose a total relays power allocation (PA) scheme with the sum relays transmit power constraint to maximize the average system capacity. Since the original PA optimization problem is not convex, it is difficult to derive an analytical solution, so we propose to simplify the problem by employing the relaxed power constraint which is slightly higher than the actual sum relays power, then we derive the closed-form solution. The Monte Carlo simulation results shown that our proposed joint PA scheme significantly improves the system capacity compared with the conventional ZF relaying scheme.
Starting Page	146
Ending Page	149
File Size	132798
Page Count	4
File Format	PDF
e-ISBN	9781479905300
DOI	10.1109/SOLI.2013.6611399
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-28
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	zero-forcing relaying Noise Educational institutions power allocation MIMO Electronic mail multiple-input multiple-output (MIMO) multi-relay Resource management Relays Optimization
Content Type	Text
Resource Type	Article

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