Optimal Power Allocation Between Training and Data for MIMO Two-Way Relay Channels
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Date
2015
Authors
Li, Xiaofeng
Tepedelenlioğlu, Cihan
Şenol, Habib
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE-INST Electrical Electronics Engineers Inc
Abstract
Power allocation between training and data in MIMO two-way relay systems is proposed which takes into consideration both the symmetric and asymmetric cases of the two sources. For the former we present a closed form for the optimal ratio of data energy to total energy which is suitable for the single antenna case as well and can be simplified when the number of antennas is large. We also show that the achievable rate is a monotonically increasing function of the data time. Concerning the asymmetric case we prove that the difference of the two SNRs is either a concave or convex function of the energy ratio depending on the imbalance between the two sources. Using this the minimum SNR between the two sources is maximized.
Description
Keywords
Power allocation, Training and data, Asymmetric case, Two-way relay channel, Mimo
Turkish CoHE Thesis Center URL
Citation
1
WoS Q
Q2
Scopus Q
Q1
Source
Volume
19
Issue
11
Start Page
1941
End Page
1944