Dual methods for channel- and QoS-aware resource allocation in MIMO-OFDMA networks

This work addresses the application of the cross-layer paradigm to the design of efficient resource allocation algorithms for the downlink of a MIMO-OFDMA system with a physical layer employing optimal single-stream/single-user linear precoding. Mathematical programming tools are used to solve the problem of weighted throughput maximization using both channel state information from the physical layer and queue state information supplied by the data link control layer. Due to the complex combinatorial nature of the problem, low-complexity Lagrange decomposition methods combined with subgradient projection algorithms are used to find a solution in the dual domain. The analytical framework proposed in this paper is used to assess the multiuser capacity, packet delay performance and fairness for different channel- and/or QoS-aware resource allocation algorithms proposed in the literature and different MIMO channel configurations.

[1]  Guillem Femenias,et al.  Resource Allocation in MIMO-OFDMA Wireless Systems Based on Linearly Precoded Orthogonal Space-Time Block Codes , 2009, EUNICE.

[2]  Raj Jain,et al.  A Quantitative Measure Of Fairness And Discrimination For Resource Allocation In Shared Computer Systems , 1998, ArXiv.

[3]  John M. Cioffi,et al.  Optimal Resource Allocation for OFDMA Downlink Systems , 2006, 2006 IEEE International Symposium on Information Theory.

[4]  Brian L. Evans,et al.  Resource Allocation in Multiuser Multicarrier Wireless Systems , 2007 .

[5]  Wei Yu,et al.  Dual methods for nonconvex spectrum optimization of multicarrier systems , 2006, IEEE Transactions on Communications.

[6]  Preben E. Mogensen,et al.  A stochastic MIMO radio channel model with experimental validation , 2002, IEEE J. Sel. Areas Commun..

[7]  Stephen P. Boyd,et al.  Subgradient Methods , 2007 .

[8]  Yu-Kwong Kwok,et al.  A Low-Complexity QoS-Aware Proportional Fair Multicarrier Scheduling Algorithm for OFDM Systems , 2009, IEEE Transactions on Vehicular Technology.

[9]  T.K.Y. Lo,et al.  Maximum ratio transmission , 1999, 1999 IEEE International Conference on Communications (Cat. No. 99CH36311).

[10]  Geoffrey Ye Li,et al.  Joint channel- and queue-aware scheduling for multiuser diversity in wireless OFDMA networks , 2009, IEEE Transactions on Communications.

[11]  John M. Cioffi,et al.  Multiuser transmit optimization for multicarrier broadcast channels: asymptotic FDMA capacity region and algorithms , 2004, IEEE Transactions on Communications.