Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficient Incremental Relaying   We propose a novel relaying scheme which improves the spectral efficiency of
cooperative diversity systems by utilizing limited feedback from destination.
Our scheme capitalizes on the fact that relaying is only required when direct
transmission suffers deep fading. We calculate the packet error rate for the
proposed efficient incremental relaying scheme with both amplify and forward
and decode and forward relaying. Numerical results are also presented to verify
their analytical counterparts.

37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex