Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generalized Degrees of Freedom of the Interference Channel with a Signal
  Cognitive Relay   We study the interference channel with a signal cognitive relay. A signal
cognitive relay knows the transmit signals (but not the messages) of the
sources non-causally, and tries to help them communicating with their
respective destinations. We derive upper bounds and provide achievable schemes
for this channel. These upper and lower bounds are shown to be tight from
generalized degrees of freedom point of view. As a result, a characterization
of the generalized degrees of freedom of the interference channel with a signal
cognitive relay is given.

20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th