TY - GEN
T1 - Practical network coding for two way relay channels in LTE networks
AU - Hamdoun, Hassan
AU - Loskot, Pavel
AU - O'Farrell, Timothy
AU - He, Jianhua
PY - 2011/1/1
Y1 - 2011/1/1
N2 - In this paper, the implementation aspects and constraints of the simplest network coding (NC) schemes for a two-way relay channel (TWRC) composed of a user equipment (mobile terminal), an LTE relay station (RS) and an LTE base station (eNB) are considered in order to assess the usefulness of the NC in more realistic scenarios. The information exchange rate gain (IERG), the energy reduction gain (ERG) and the resource utilization gain (RUG) of the NC schemes with and without subcarrier division duplexing (SDD) are obtained by computer simulations. The usefulness of the NC schemes are evaluated for varying traffic load levels, the geographical distances between the nodes, the RS transmit powers, and the maximum numbers of retransmissions. Simulation results show that the NC schemes with and without SDD, have the throughput gains 0.5% and 25%, the ERGs 7 - 12% and 16 - 25%, and the RUGs 0.5 - 3.2%, respectively. It is found that the NC can provide performance gains also for the users at the cell edge. Furthermore, the ERGs of the NC increase with the transmit power of the relay while the ERGs of the NC remain the same even when the maximum number of retransmissions is reduced.
AB - In this paper, the implementation aspects and constraints of the simplest network coding (NC) schemes for a two-way relay channel (TWRC) composed of a user equipment (mobile terminal), an LTE relay station (RS) and an LTE base station (eNB) are considered in order to assess the usefulness of the NC in more realistic scenarios. The information exchange rate gain (IERG), the energy reduction gain (ERG) and the resource utilization gain (RUG) of the NC schemes with and without subcarrier division duplexing (SDD) are obtained by computer simulations. The usefulness of the NC schemes are evaluated for varying traffic load levels, the geographical distances between the nodes, the RS transmit powers, and the maximum numbers of retransmissions. Simulation results show that the NC schemes with and without SDD, have the throughput gains 0.5% and 25%, the ERGs 7 - 12% and 16 - 25%, and the RUGs 0.5 - 3.2%, respectively. It is found that the NC can provide performance gains also for the users at the cell edge. Furthermore, the ERGs of the NC increase with the transmit power of the relay while the ERGs of the NC remain the same even when the maximum number of retransmissions is reduced.
UR - http://www.scopus.com/inward/record.url?scp=80052016170&partnerID=8YFLogxK
UR - http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5956329
U2 - 10.1109/VETECS.2011.5956329
DO - 10.1109/VETECS.2011.5956329
M3 - Conference publication
AN - SCOPUS:80052016170
SN - 978-1-4244-8332-7
T3 - Proceedings of IEEEVTS Vehicular Technology Conference
BT - 2011 IEEE 73rd Vehicular Technology Conference (VTC Spring)
PB - IEEE
T2 - IEEE 73rd Vehicular Technology Conference
Y2 - 15 May 2011 through 18 May 2011
ER -