Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Graph-based Code Design for Quadratic-Gaussian Wyner-Ziv Problem with
  Arbitrary Side Information   Wyner-Ziv coding (WZC) is a compression technique using decoder side
information, which is unknown at the encoder, to help the reconstruction. In
this paper, we propose and implement a new WZC structure, called residual WZC,
for the quadratic-Gaussian Wyner-Ziv problem where side information can be
arbitrarily distributed. In our two-stage residual WZC, the source is quantized
twice and the input of the second stage is the quantization error (residue) of
the first stage. The codebook of the first stage quantizer must be
simultaneously good for source and channel coding, since it also acts as a
channel code at the decoder. Stemming from the non-ideal quantization at the
encoder, a problem of channel decoding beyond capacity is identified and solved
when we design the practical decoder. Moreover,by using the modified reinforced
belief-propagation quantization algorithm, the low-density parity check code
(LDPC), whose edge degree is optimized for channel coding, also performs well
as a source code. We then implement the residual WZC by an LDPC and a low
density generator matrix code (LDGM). The simulation results show that our
practical construction approaches the Wyner-Ziv bound. Compared with previous
works, our construction can offer more design lexibility in terms of
distribution of side information and practical code rate selection.

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The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom