An OFDMA-Based Subcarrier and Power Allocation Scheme in Wireless Cooperative Cellular Systems
Wireless Personal Communications: An International Journal
Delay-bounded power-efficient packet scheduling for uplink systems of LTE
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Interference aware resource allocation for hybrid hierarchical wireless networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
A stability-based scheduling scheme for OFDMA networks
ISWPC'10 Proceedings of the 5th IEEE international conference on Wireless pervasive computing
A new adaptive model for throughput enhancement and optimal relay selection in IEEE 802.16j networks
WSEAS TRANSACTIONS on COMMUNICATIONS
Computer Networks: The International Journal of Computer and Telecommunications Networking
Journal of Network and Computer Applications
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In an orthogonal frequency division multiplexing (OFDM) downlink scenario, we propose joint subcarrier and power allocation for channel-aware queue-aware scheduling while allowing multiple users to share a single OFDM symbol. Our approach is to combine subcarrier and power allocation by optimizing a user's power allocation immediately after the user has been allocated a subcarrier. Simulation results show that joint subcarrier and power allocation yields a significant performance improvement compared to other existing schemes which perform subcarrier allocation with a fixed (uniform) power allocation assumption. Joint subcarrier and power allocation is also extended to band-wise allocation of subcarriers in order to help reduce signaling overhead in time varying channels. We examine the trade-off between increasing the sub-band size and the corresponding degradation in system performance for different values of the channel multipath delay spread.