Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Subcarrier-Chunk Assignment With Power Allocation and Multiple-Rate
  Constraints for Downlink OFDMA   We consider downlink OFDMA in which users are imposed with different
proportional-rate constraints, and a base station would like to maximise user
rate over subcarrier assignment (SA) and power allocation (PA). To attain the
objective, we propose a chunk-based SA and low-complexity PA algorithms.
Numerical results show that the proposed SA and PA can provide higher average
minimum achievable rate than the existing schemes while keeping the deviation
from the rate constraint small for both single-cell and multi-cell systems with
fractional frequency reuse.

37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol