Subcarrier allocation schemes for multiuser OFDM systems

We consider the problem of subcarrier allocation to multiple users in a downlink OFDM access system. We study allocation schemes that provide varying degrees of tradeoff between (i) achieving throughput fairness among users, (ii) meeting tolerable latency requirements specified by the user applications, and (iii) achieving higher system capacity. The performance of the subcarrier allocation schemes is evaluated through simulation results.

[1]  Naftali Chayat.  Tentative Criteria for Comparison of Modulation Methods , 1997 .

[2]  Frank Kelly,et al.  Rate control for communication networks: shadow prices, proportional fairness and stability , 1998, J. Oper. Res. Soc..

[3]  Khaled Ben Letaief,et al.  Multiuser OFDM with adaptive subcarrier, bit, and power allocation , 1999, IEEE J. Sel. Areas Commun..

[4]  Theodore S. Rappaport,et al.  Wireless communications - principles and practice , 1996 .

[5]  Philip A. Whiting,et al.  Cdma data qos scheduling on the forward link with variable channel conditions , 2000 .

[6]  John M. Cioffi,et al.  Increase in capacity of multiuser OFDM system using dynamic subchannel allocation , 2000, VTC2000-Spring. 2000 IEEE 51st Vehicular Technology Conference Proceedings (Cat. No.00CH37026).

[7]  Alexander L. Stolyar,et al.  Scheduling algorithms for a mixture of real-time and non-real-time data in HDR , 2001 .

[8]  S. Pietrzyk,et al.  Multiuser subcarrier allocation for QoS provision in the OFDMA systems , 2002, Proceedings IEEE 56th Vehicular Technology Conference.

[9]  David Tse,et al.  Opportunistic beamforming using dumb antennas , 2002, IEEE Trans. Inf. Theory.

[10]  Douglas L. Jones,et al.  Computationally efficient optimal power allocation algorithms for multicarrier communication systems , 2000, IEEE Trans. Commun..

[11]  Guocong Song,et al.  Adaptive resource allocation based on utility optimization in OFDM , 2003, GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489).

[12]  V. Roman,et al.  Broadband wireless access solutions based on OFDM access in IEEE 802.16 , 2002 .

[13]  Soura Dasgupta,et al.  Optimum multiuser OFDM systems with unequal subchannel assignment , 2003, IEEE International Conference on Communications, 2003. ICC '03..

[14]  Didem Kivanc-Tureli,et al.  Computationally efficient bandwidth allocation and power control for OFDMA , 2003, IEEE Trans. Wirel. Commun..