TY - GEN
T1 - Irregular repeat-accumulate coded physical-layer network coding design for two-way relay channels
AU - Yang, Lei
AU - Yang, Tao
AU - Yuan, Jinhong
AU - An, Jianping
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2015/1/12
Y1 - 2015/1/12
N2 - We propose a new irregular repeat-accumulate (IRA) coded physical-layer network coding (PNC) scheme for Gaussian two-way relay channels (TWRCs). In the scheme, a same random-coset IRA code over GF(q) is employed at the two users, which directly maps the q-ary message sequences into coded q-PAM symbol sequences. The relay computes the network coded message sequence directly from the superimposed signal using an iterative belief propagation algorithm. By exploring the symmetry and permutation-invariance properties of the decoder's soft information distribution, a two-dimension extrinsic information transfer (EXIT) chart is developed to analyze and optimize the nonbinary IRA coded PNC scheme. Numerical results demonstrate that our developed scheme achieves near-capacity performance in Gaussian TWRCs.
AB - We propose a new irregular repeat-accumulate (IRA) coded physical-layer network coding (PNC) scheme for Gaussian two-way relay channels (TWRCs). In the scheme, a same random-coset IRA code over GF(q) is employed at the two users, which directly maps the q-ary message sequences into coded q-PAM symbol sequences. The relay computes the network coded message sequence directly from the superimposed signal using an iterative belief propagation algorithm. By exploring the symmetry and permutation-invariance properties of the decoder's soft information distribution, a two-dimension extrinsic information transfer (EXIT) chart is developed to analyze and optimize the nonbinary IRA coded PNC scheme. Numerical results demonstrate that our developed scheme achieves near-capacity performance in Gaussian TWRCs.
KW - Extrinsic information transfer (EXIT) chart
KW - Irregular repeat-accumulate (IRA) code
KW - Iterative decoding
KW - Physical-layer network coding (PNC)
KW - Two-way relay channel (TWRC)
UR - https://www.scopus.com/pages/publications/84922580308
U2 - 10.1109/ICCChina.2014.7008249
DO - 10.1109/ICCChina.2014.7008249
M3 - Conference contribution
AN - SCOPUS:84922580308
T3 - 2014 IEEE/CIC International Conference on Communications in China, ICCC 2014
SP - 91
EP - 96
BT - 2014 IEEE/CIC International Conference on Communications in China, ICCC 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 IEEE/CIC International Conference on Communications in China, ICCC 2014
Y2 - 13 October 2014 through 15 October 2014
ER -