Mutual Information Based Packet Scheduling for Linearly Precoded Multiuser MIMO Systems

In this paper, we present a novel Mutual Information (MI) based spatial frequency domain packet scheduling for downlink Orthogonal Frequency Division Multiple Access (OFDMA) multiuser MIMO systems. The proposed scheduler is designed to exploit the available multiuser diversity in time, frequency and spatial domains. The analysis model is based on the generalized 3GPP LTE downlink transmission for which two Spatial Division Multiplexing (SDM) multiuser MIMO schemes are investigated: Single User (SU) and Multi-user (MU) MIMO schemes. The results show that the proposed MU-MIMO scheduler is a more realistic solution and provides fairness among users for the system under consideration.

[1]  David J. Goodman,et al.  PRoportional Fair Scheduling of Uplink Single-Carrier FDMA Systems , 2006, 2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications.

[2]  R. Michael Buehrer,et al.  The impact of multiuser diversity on space-time block coding , 2003, IEEE Communications Letters.

[3]  Rohit U. Nabar,et al.  Introduction to Space-Time Wireless Communications , 2003 .

[4]  Yongle Wu,et al.  Linear transmitter precoding design for downlink of multiuser MIMO systems , 2005 .

[5]  P.E. Mogensen,et al.  Interaction of transmit diversity and proportional fair scheduling , 2003, The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring..

[6]  Alexander Barg,et al.  Bounds on packings of spheres in the Grassmann manifold , 2002, IEEE Trans. Inf. Theory.

[7]  Thomas L. Marzetta,et al.  Systematic design of unitary space-time constellations , 2000, IEEE Trans. Inf. Theory.

[8]  Preben E. Mogensen,et al.  Performance of MIMO with Frequency Domain Packet Scheduling in UTRAN LTE Downlink , 2007, 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring.

[9]  Stephan ten Brink,et al.  Achieving near-capacity on a multiple-antenna channel , 2003, IEEE Trans. Commun..

[10]  Chiung-Jang Chen,et al.  Performance Analysis of Scheduling in Multiuser MIMO Systems with Zero-Forcing Receivers , 2007, IEEE Journal on Selected Areas in Communications.