Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Equal-Rate Capacity of the AWGN Multiway Relay Channel   The L-user additive white Gaussian noise multiway relay channel is
investigated, where L users exchange information at the same rate through a
single relay. A new achievable rate region, based on the
functional-decode-forward coding strategy, is derived. For the case where there
are three or more users, and all nodes transmit at the same power, the capacity
is obtained. For the case where the relay power scales with the number of
users, it is shown that both compress-forward and functional-decode-forward
achieve rates within a constant number of bits of the capacity at all SNR
levels; in addition, functional-decode-forward outperforms compress-forward and
complete-decode-forward at high SNR levels.

6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas