Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Floor Scale Modulo Lifting for QC-LDPC codes   In the given paper we present a novel approach for constructing a QC-LDPC
code of smaller length by lifting a given QC-LDPC code. The proposed method can
be considered as a generalization of floor lifting. Also we prove several
probabilistic statements concerning a theoretical improvement of the method
with respect to the number of small cycles. Making some offline calculation of
scale parameter it is possible to construct a sequence of QC-LDPC codes with
different circulant sizes generated from a single exponent matrix using only
floor and scale operations. The only parameter we store in memory is a constant
needed for scaling.

13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin