Spatial Multiplexing with Opportunistic Multiuser Scheduling in Ad Hoc Networks

In this paper, we investigate the performance of multiuser scheduling with open-loop spatial multiplexing in ad hoc networks. Closed-form expressions for outage probability and spatial throughput are derived for spatial multiplexing transmission with zero forcing (ZF) receiver and multiuser scheduling. Monte Carlo simulation results reveal that these expressions accurately demonstrate the performance of multiuser scheduling with open-loop spatial multiplexing. Based on these expressions, transmission capacity performance is analyzed and the effects of system parameters over network performance metrics are studied. Our finding indicates that spatial multiplexing with opportunistic multiuser scheduling can provide boosted network performance for ad hoc network by exploiting multiuser diversity gain, whilst requiring very low feedback requirements.

[1]  Aggelos Bletsas,et al.  A simple Cooperative diversity method based on network path selection , 2005, IEEE Journal on Selected Areas in Communications.

[2]  D. Stoyan,et al.  Stochastic Geometry and Its Applications , 1989 .

[3]  Matthew R. McKay,et al.  Maximum sum-rate of MIMO multiuser scheduling with linear receivers , 2008, IEEE Transactions on Communications.

[4]  Matthew R. McKay,et al.  Open-Loop Spatial Multiplexing and Diversity Communications in Ad Hoc Networks , 2010, IEEE Transactions on Information Theory.

[5]  M. Abramowitz,et al.  Handbook of Mathematical Functions With Formulas, Graphs and Mathematical Tables (National Bureau of Standards Applied Mathematics Series No. 55) , 1965 .

[6]  Jeffrey G. Andrews,et al.  Transmission capacity of ad hoc networks with spatial diversity , 2007, IEEE Transactions on Wireless Communications.

[7]  Jeffrey G. Andrews,et al.  Multiuser Zero-Forcing Beamforming with Limited Feedback in Wireless Ad Hoc Networks , 2011, 2011 IEEE International Conference on Communications (ICC).

[8]  H. N. Nagaraja,et al.  Order Statistics, Third Edition , 2005, Wiley Series in Probability and Statistics.

[9]  Jeffrey G. Andrews,et al.  Transmission capacity of wireless ad hoc networks with outage constraints , 2005, IEEE Transactions on Information Theory.

[10]  Matthew R. McKay,et al.  Benefits of Transmit Antenna Selection in Ad Hoc Networks , 2010, 2010 IEEE Global Telecommunications Conference GLOBECOM 2010.

[11]  Herbert A. David,et al.  Order Statistics, Third Edition , 2003, Wiley Series in Probability and Statistics.