Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Joint User Association and Downlink Beamforming for Green Cloud-RANs
  with Limited Fronthaul   With the explosive growth of smart devices and mobile data traffic, limited
fronthaul capacity has become a notable bottleneck of green communication
access networks, such as cloud radio access networks(C-RANs). In this paper, we
proposed a joint user association and downlink beamforming scheme for green
C-RANs to minimize the network power consumption with the limited fronthaul
links. We first formulate the design problem as a mixed integer nonlinear
programming (MINLP), and then transformed the MINLP problem into a mixed
integer second-order cone program (MI-SOCP) which is a convex program when the
integer variables are fixed. By relaxing the integer variables to continuous
ones, an inflation algorithm, which can be finished within polynomial time, was
proposed to solved the problem. The simulation results are presented to
validate the effectiveness of our proposed algorithm compared with the the
scheme adopted by LTE-A.

15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat