Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Near-Capacity Adaptive Analog Fountain Codes for Wireless Channels   In this paper, we propose a capacity-approaching analog fountain code (AFC)
for wireless channels. In AFC, the number of generated coded symbols is
potentially limitless. In contrast to the conventional binary rateless codes,
each coded symbol in AFC is a real-valued symbol, generated as a weighted sum
of $d$ randomly selected information bits, where $d$ and the weight
coefficients are randomly selected from predefined probability mass functions.
The coded symbols are then directly transmitted through wireless channels. We
analyze the error probability of AFC and design the weight set to minimize the
error probability. Simulation results show that AFC achieves the capacity of
the Gaussian channel in a wide range of signal to noise ratio (SNR).

27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics