Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bilayer LDPC Convolutional Codes for Half-Duplex Relay Channels   In this paper we present regular bilayer LDPC convolutional codes for
half-duplex relay channels. For the binary erasure relay channel, we prove that
the proposed code construction achieves the capacities for the source-relay
link and the source-destination link provided that the channel conditions are
known when designing the code. Meanwhile, this code enables the highest
transmission rate with decode-and-forward relaying. In addition, its regular
degree distributions can easily be computed from the channel parameters, which
significantly simplifies the code optimization. Numerical results are provided
for both binary erasure channels (BEC) and AWGN channels. In BECs, we can
observe that the gaps between the decoding thresholds and the Shannon limits
are impressively small. In AWGN channels, the bilayer LDPC convolutional code
clearly outperforms its block code counterpart in terms of bit error rate.

31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat