Browsing by Subject "Power allocation"
Now showing items 1-2 of 2
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Energy Efficient SCMA Supported Downlink Cloud-RANs for 5G Networks
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Publisher and Date:(IEEE, 2020)Cloud-radio access networks (C-RANs) are regarded as a promising solution to provide low cost services among users through the centralized coordination of baseband units for 5G wireless networks. The coordinated multi-point access, visualization and cloud computing technologies enable C-RANs to provide higher capacity and wider coverage, as well as manage the interference and mobility in a centralized coordinated way. However, C-RANs face many challenges due to massive connectivity and spectrum ...
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Optimal Power Allocation Between Training and Data for MIMO Two-Way Relay Channels
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Publisher and Date:(IEEE-INST Electrical Electronics Engineers Inc, 2015)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 ...
