Abstract
This paper investigates soft information relaying (SIR) for low-density parity-check (LDPC) coded transmission in wireless networks. We introduce a new scheme for soft parity symbol generation at the relay, which features two key strategies: a two-step soft parity generation process, and a prescaling technique. The two-step soft parity generation procedure is designed to allow efficient relay processing, while yielding an overall (i.e., destination) parity-check matrix structure with desirable properties. The pre-scaling method prevents the amplitudes of generated soft symbols successively converging to zero, as happens with some existing soft forwarding methods. Finally, we propose an appropriate LLR former at the destination which is tailored to the proposed soft parity generation technique. Simulation results demonstrate that the proposed relay protocol yields an improved BER performance compared to competitive schemes proposed in the literature.
| Original language | English |
|---|---|
| Title of host publication | 2013 IEEE Wireless Communications and Networking Conference, WCNC 2013 |
| Pages | 4317-4322 |
| Number of pages | 6 |
| DOIs | |
| Publication status | Published - 2013 |
| Externally published | Yes |
| Event | 2013 IEEE Wireless Communications and Networking Conference, WCNC 2013 - Shanghai, China Duration: 7 Apr 2013 → 10 Apr 2013 |
Conference
| Conference | 2013 IEEE Wireless Communications and Networking Conference, WCNC 2013 |
|---|---|
| Country | China |
| City | Shanghai |
| Period | 7.4.13 → 10.4.13 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
LDPC coding with soft information relaying in cooperative wireless networks. / Jayakody, Dushantha N.K.; Flanagan, Mark F.
2013 IEEE Wireless Communications and Networking Conference, WCNC 2013. 2013. p. 4317-4322 6555272.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - LDPC coding with soft information relaying in cooperative wireless networks
AU - Jayakody, Dushantha N.K.
AU - Flanagan, Mark F.
PY - 2013
Y1 - 2013
N2 - This paper investigates soft information relaying (SIR) for low-density parity-check (LDPC) coded transmission in wireless networks. We introduce a new scheme for soft parity symbol generation at the relay, which features two key strategies: a two-step soft parity generation process, and a prescaling technique. The two-step soft parity generation procedure is designed to allow efficient relay processing, while yielding an overall (i.e., destination) parity-check matrix structure with desirable properties. The pre-scaling method prevents the amplitudes of generated soft symbols successively converging to zero, as happens with some existing soft forwarding methods. Finally, we propose an appropriate LLR former at the destination which is tailored to the proposed soft parity generation technique. Simulation results demonstrate that the proposed relay protocol yields an improved BER performance compared to competitive schemes proposed in the literature.
AB - This paper investigates soft information relaying (SIR) for low-density parity-check (LDPC) coded transmission in wireless networks. We introduce a new scheme for soft parity symbol generation at the relay, which features two key strategies: a two-step soft parity generation process, and a prescaling technique. The two-step soft parity generation procedure is designed to allow efficient relay processing, while yielding an overall (i.e., destination) parity-check matrix structure with desirable properties. The pre-scaling method prevents the amplitudes of generated soft symbols successively converging to zero, as happens with some existing soft forwarding methods. Finally, we propose an appropriate LLR former at the destination which is tailored to the proposed soft parity generation technique. Simulation results demonstrate that the proposed relay protocol yields an improved BER performance compared to competitive schemes proposed in the literature.
UR - http://www.scopus.com/inward/record.url?scp=84881578644&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84881578644&partnerID=8YFLogxK
U2 - 10.1109/WCNC.2013.6555272
DO - 10.1109/WCNC.2013.6555272
M3 - Conference contribution
SN - 9781467359399
SP - 4317
EP - 4322
BT - 2013 IEEE Wireless Communications and Networking Conference, WCNC 2013
ER -