SCIENTIA SINICA Informationis, Volume 47 , Issue 5 : 560(2017) https://doi.org/10.1360/N112017-00035

## Energy efficient resource optimization and transmission strategies for hyper-cellular mobile communication systems

• AcceptedMar 20, 2017
• PublishedMay 4, 2017
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• Figure 1

Relationship between energy efficiency (EE) and spectral efficiency (SE) in an additive white Gaussian noise (AWGN) channel [3]

• Figure 2

(a) EE-SE curve of distributed antenna system under different power allocation policies (9 distributed protectłinebreak antennas) [9]; (b) EE-SE curve of centralized massive MIMO system with different power consumption parameters protectłinebreak (128 antennas at base station) [10]

• Figure 3

(a) EE and (b) SE achieved by the EE-optimal and SE-optimal strategies in D2D system [15]

• Figure 4

EE-SE curves for different number of antennas $n_t$ in MIMO-OFDMA system [18]

• Figure 5

Relation between EE and backhaul capacity (a) and normalized cache size (b) [24]

• Figure 6

Comparison of EE and SE achieved by cooperative and non-cooperative BS sleeping schemes [27]

• Figure 7

EE gain and SE loss of the EE-oriented design over the SE-oriented design [33]

• Figure 8

Gain of average data rate (a) and reduction of average downloading time (b) achieved by precaching over prefetching [39]

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