TY - GEN
T1 - Resource allocation for two-sources single-relay AF-OFDMA systems
AU - Al-Tous, Hanan
AU - Barhumi, Imad
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/3/26
Y1 - 2015/3/26
N2 - Joint allocation of resources, namely subcarrier assignment and power profiles at the sources and relay nodes is considered for amplify and forward (AF) relaying scheme for two users using orthogonal frequency division multiple access (OFDMA). The objective is to allocate the resources to maximize the weighted sum rate subject to individual power constraint on each node. We formulate such a problem as subcarrier based resource allocation that seeks joint optimization of subcarrier assignment and power profiles at the source and relay nodes. Using high signal-to-noise-ratio (SNR) approximation, a low complexity algorithm is proposed to split the subcarriers into two partitions based on channel gains' ordering, where each partition is assigned to one user. The computational complexity of finding the subcarrier assignment that maximizes the weighted sum rate for N subcarriers AF-OFDMA scenario is of O(N). The merits of the proposed algorithm is demonstrated by numerical simulations.
AB - Joint allocation of resources, namely subcarrier assignment and power profiles at the sources and relay nodes is considered for amplify and forward (AF) relaying scheme for two users using orthogonal frequency division multiple access (OFDMA). The objective is to allocate the resources to maximize the weighted sum rate subject to individual power constraint on each node. We formulate such a problem as subcarrier based resource allocation that seeks joint optimization of subcarrier assignment and power profiles at the source and relay nodes. Using high signal-to-noise-ratio (SNR) approximation, a low complexity algorithm is proposed to split the subcarriers into two partitions based on channel gains' ordering, where each partition is assigned to one user. The computational complexity of finding the subcarrier assignment that maximizes the weighted sum rate for N subcarriers AF-OFDMA scenario is of O(N). The merits of the proposed algorithm is demonstrated by numerical simulations.
KW - AF Cooperative Communications
KW - OFDMA
KW - Resource Allocation
KW - Weighted Sum Rate
UR - http://www.scopus.com/inward/record.url?scp=84928036760&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84928036760&partnerID=8YFLogxK
U2 - 10.1109/ICCNC.2015.7069481
DO - 10.1109/ICCNC.2015.7069481
M3 - Conference contribution
AN - SCOPUS:84928036760
T3 - 2015 International Conference on Computing, Networking and Communications, ICNC 2015
SP - 989
EP - 993
BT - 2015 International Conference on Computing, Networking and Communications, ICNC 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2015 International Conference on Computing, Networking and Communications, ICNC 2015
Y2 - 16 February 2015 through 19 February 2015
ER -