Abstract
Network coding has been known as a spectrally efficient technique in wireless networks. However, when it is applied to a two-way relay channel (TWRC), it suffers from performance degradation caused by the asymmetric position of the relay. In this paper, we suggest remedying this problem by using hierarchical modulation at the source node. We investigate how hierarchical modulation can be incorporated and optimized with network coding. Our results are encouraging in that hierarchically modulated network coding (HMNC) significantly improves end-to-end bit-error probability and spectral efficiency in asymmetric relay channels, as compared with direct transmission (DT), bidirectional network coding (BNC), and coded bidirectional relay (CBR).
| Original language | English |
|---|---|
| Article number | 5430953 |
| Pages (from-to) | 2179-2184 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Vehicular Technology |
| Volume | 59 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2010 Jun 1 |
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All Science Journal Classification (ASJC) codes
- Automotive Engineering
- Aerospace Engineering
- Applied Mathematics
- Electrical and Electronic Engineering
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Hierarchically modulated network coding for asymmetric two-way relay systems. / Park, Jung Min; Kim, Seong Lyun; Choi, Jinho.
In: IEEE Transactions on Vehicular Technology, Vol. 59, No. 5, 5430953, 01.06.2010, p. 2179-2184.Research output: Contribution to journal › Article
TY - JOUR
T1 - Hierarchically modulated network coding for asymmetric two-way relay systems
AU - Park, Jung Min
AU - Kim, Seong Lyun
AU - Choi, Jinho
PY - 2010/6/1
Y1 - 2010/6/1
N2 - Network coding has been known as a spectrally efficient technique in wireless networks. However, when it is applied to a two-way relay channel (TWRC), it suffers from performance degradation caused by the asymmetric position of the relay. In this paper, we suggest remedying this problem by using hierarchical modulation at the source node. We investigate how hierarchical modulation can be incorporated and optimized with network coding. Our results are encouraging in that hierarchically modulated network coding (HMNC) significantly improves end-to-end bit-error probability and spectral efficiency in asymmetric relay channels, as compared with direct transmission (DT), bidirectional network coding (BNC), and coded bidirectional relay (CBR).
AB - Network coding has been known as a spectrally efficient technique in wireless networks. However, when it is applied to a two-way relay channel (TWRC), it suffers from performance degradation caused by the asymmetric position of the relay. In this paper, we suggest remedying this problem by using hierarchical modulation at the source node. We investigate how hierarchical modulation can be incorporated and optimized with network coding. Our results are encouraging in that hierarchically modulated network coding (HMNC) significantly improves end-to-end bit-error probability and spectral efficiency in asymmetric relay channels, as compared with direct transmission (DT), bidirectional network coding (BNC), and coded bidirectional relay (CBR).
UR - http://www.scopus.com/inward/record.url?scp=77953733310&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77953733310&partnerID=8YFLogxK
U2 - 10.1109/TVT.2010.2045521
DO - 10.1109/TVT.2010.2045521
M3 - Article
AN - SCOPUS:77953733310
VL - 59
SP - 2179
EP - 2184
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
SN - 0018-9545
IS - 5
M1 - 5430953
ER -