Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Arbitrarily Varying Wiretap Channel with State Sequence Known or Unknown
  at the Receiver   The secrecy capacity problems over the general arbitrarily varying wiretap
channel (AVWC), with respect to the maximal decoding error probability and
strong secrecy criterion, are considered, where the channel state sequence may
be known or unknown at the receiver. In the mean time, it is always assumed
that the channel state sequence is known at the eavesdropper and unknown at the
transmitter. Capacity results of both stochastic code (with random encoder and
deterministic decoder) and random code (with random encoder and decoder) are
discussed. This model includes the previous models of classic AVWC as special
cases. Single-letter lower bounds on the secrecy capacities are given, which
are proved to be the secrecy capacities when the main channel is less noisy
than the wiretap channel. The coding scheme is based on Csiszar's almost
independent coloring scheme and Ahlswede's elimination technique. Moreover, a
new kind of typical sequence with respect to states is defined for this coding
scheme. It is concluded that the secrecy capacity of stochastic code is
identical to that of random code when the receiver knows the state sequence.
Meanwhile, random code may achieve larger secrecy capacity when the state
sequence is unknown by the receiver.

12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph