Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Upper-Bounding the Capacity of Relay Communications - Part I   This paper focuses on the capacity of point-to-point relay communications
wherein the transmitter is assisted by an intermediate relay. We detail the
mathematical model of cutset and amplify and forward (AF) relaying strategy. We
present the upper bound capacity of each relaying strategy from information
theory viewpoint and also in networks with Gaussian channels. We exemplify
various outer region capacities of the addressed strategies with two different
case studies. The results exhibit that in low signal-to-noise ratio (SNR)
environments the cutset performance is better than amplify and forward
strategy.

23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
3
The categories of this paper are: physics
18
The categories of this paper are: econ